MHT-X 10120 L E3 Groupe 70 (Hydraulic)

7/17/2019 MHT-X 10120 L E3 Groupe 70 (Hydraulic)

1/60

HYDRAULIC

HYDRAULIC SCHEMATIC DIAGRAMS

HYDRAULIC COMPONENTS LOCATION

HYDRAULIC CONTROL AND ADJUSTMENT

HYDRAULIC COMPONENTS REMOVAL

HYDRAULIC COMPONENTS REFIT

HYDRAULIC SPECIFIC TOOLING

70


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HYDRAULIC SCHEMATIC DIAGRAMS

page

MHT 10120. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MHT 7140 990. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MHT 10160 10180 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

MHT 10210 10225 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11


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2 HYDRAULIC SCHEMATIC DIAGRAMS


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3HYDRAULIC SCHEMATIC DIAGRAMS

Ref. DescriptionPosition on the

diagramFeatures (Optional)

A Pressure accumulator O18

C.1 Manifold 1 O35C.2 Manifold 2 Q39

C.3 Manifold 3 Q41

CPD Block and balancing valve C17

CSD Double block and balancing valve C10

CSP Pilot-operated relief valve C7 / C13 / C16

D. Directional control valve I18

E Solenoid valve C31

E.C.L. Levelling check solenoid valve O13 / O14

E.F.S. Parking brake solenoid valve A30

FA Suction lter S4 / S5 / S32

FDAR Rear axle disk brake C24 / E24

FDAV Front axle disk brake C36 / E36

FR Exhaust lter S34

FS Parking brake control cylinder C35

I.D. Power steering E34

M Manipulator M18

MI Hydrostatic motor M34

MT I.C. engine M22

M.V. Fan motor Q17

P. Pump Q4 / Q6

P.A. Optional connector C11

PH Hydrostatic pump M23

R Hydraulic uid tank S4

Rd Oil radiator Q38

VC Compensation cylinder A19 DE 105x75 C 1095

V.C.A. Accumulators charge valve Q8

V.C.I. Slewing cut off valve O15

VCLR Slow-fast speed control cylinder C33

V.D. Steering cylinder C24 / E36

V.F. Brakes valve C41

VI Slewing cylinder A14 / A16 DE 135x95 C 510

V.I. Inching valve I30VL Lift cylinder A8 DE 180x115 C 1540

V.L.* Levelling cylinder M11 DE 140x65 C 170

VM Maximum pressure valve O5

VSLR Slow-fast speed control valve A26

VT Boom extension cylinder A11 DE 105x80 C 3973

Y101 Forward movement solenoid valve K26 / K27

Y102 Reversing solenoid valve K24 / K25

Y103 1200rpm solenoid valve O5

Y110 High speed solenoid valve A27

Y111 Low speed solenoid valve A27

Y114 RH levelling solenoid valve O11

Y115 LH levelling solenoid valve O13 / O14

Y116 Crab steering solenoid valve C31

Y117 Four-wheel steering sol.valve C33

Y125 Optional 2 proportional solenoid valve G10 / G11

LEGEND

MHT 10120


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4 HYDRAULIC SCHEMATIC DIAGRAMS


layoutFeatures (Optional)

Y126 Optional 1 proportional solenoid valve E10 / E11

Y127 Retraction proportional solenoid valve E12 / E13Y142 Extension proportional solenoid valve G12 / G13

Y146 Parking brake solenoid valve A29 / A30

Y611 VRD proportional solenoid valve I6

Y633 VS solenoid valve G17

Y955 VCI solenoid valve M15


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LAYOUT

32 bar 440 bar512 bar

512 bar

C.3C.2

C.1

MI

PH

V.I.

3bar

Rd

FA

2bar

FR

ab

X2X1 B

AT

R T1 T

G S MAX1 X2

A

B

MBPS

3 bar

MT

1.5

Lpst

(

)

n 0.8

()

n

2.00.8 2.00.8

) (

2.00.8

a3a2

b2 b3

P.A.

205bar

1.2 1.2

V.L.*

E.C.L.

23BAR0,7LITRE

A

C2

V2

C1

V1

VIVC

VL

C2 C1

V2 V1CPD

PL

VT

R

C2C1

V1 V2CSDV1

C1

V2

C2

CSP

300bar

175bar

L B

A

M.V.

FA

VM

B

S

X

A3 B3A2 B2A1 B1LS SSX A4 B4

a4a1 b4

200bar

T P

M

CSP C2

V2

C1

V1

VI

B

V.C.A.

P.

V.C.I.

b1

D.

CSP

21

PT

B A

0,7Lt35 bar

35 bar0,7Lt

E.F.S.

V.F.

R2

R1

T2

T1

R NBA

TP

R

L

P

T

V.D.

V.D.I.D.

E

VSLR

FSVCLR

FDAV

FDAV

FDAR

FDARLS

200 bar

220 bar

220 bar

30bar

15L/min

350

bar

0.4

L/m

280bar

300bar 350bar

200bar

280bar

FA10 MICRONS

300 bar 300 bar

300 bar 300 bar

300bar 300bar

2.00.8

a1

Y633

VS

Y127

Y142

Y126

Y125

Y611

VRD

Y103 Y115Y114

Y955

Y111

Y110 Y146

Y117

Y116

Y102 Y101

S

Q

O

M

K

I

G

E

C

A

21 3 4 5 6 7 8 9 1 0 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

A

C

E

G

K

M

O

Q

S

I

42


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H YD RA UL IC SC HE MA TI C D IA GR AM SMHT 7140 - 990



Y115 LH levelling solenoid valve O11

Y116 Crab steering solenoid valve E29

Y117 Four-wheel steering sol.valve E31



Y127 Retraction proportional solenoid valve E12 / E13

Y142 Extension proportional solenoid valve G12 / G13

Y146 Parking brake solenoid valve A28







C.1 Manifold 1 O35

C.2 Manifold 2 Q39

C.3 Manifold 3 Q41



CSP Pilot-operated relief valve C7 / C13


DC Differential on gear A31

E Solenoid valve E29

E.C.L. Levelling check solenoid valve O11



FDAR Rear axle disk brake C22 / G22

FDAV Front axle disk brake C34 / G34

FR Exhaust lter S34

FS Parking brake control cylinder C33 / E25


M Manipulator M18

MC Brakes pump A38


MT I.C. engine M22

M.V. Fan motor Q16

P Pump Q4


PF Brake pedal A35


P.V. Pump Q9


Rd Oil radiator Q38

S. Brakes liquid tank C40


VCD Differential block control valve C31



V.D. Steering cylinder E22 / E34

VI Slewing cylinder A14 DE 210x120 C 671

V.I. Inching valve I30

VL Lift cylinder A8 DE 180x120 C 1917









Y112 Differential block solenoid valve A31

Y114 RH levelling solenoid valve O8 / O9

LEGEND


9/60

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LAYOUT


512 bar

C.3C.2

C.1

MI

PH

V.I.

3bar

Rd

FA

2bar

FR

ab

X2X1 B

AT

R T1 T2

G S MAX1 X2

A

B

MBPS

3 bar

MT

1.5

Lpst

(

)

n 0.8

()

n

2.00.8 2.00.8

) (

2.00.8

a3a2

b2 b3

P.A.

205bar

23BAR0,7LITRE

A

VC

VL

C2 C1

V2 V1CPD

PL

VT

R

C2C1

V1 V2CSDV1

C1

V2

C2

CSP

300bar

175bar

L B

A

M.V.

FA

VM

B

S

X


a4a1 b4

200bar

T P

M

CSP

C2

V2

C1

V1

VI

P.V.

V.C.I.

b1

D.

21

PT

B A E.F.S.

BA

TP

R

L

P

T

V.D.

V.D.I.D.

E

VSLR

FS

VCLR FDAV

FDAV

FDAR

FDAR

LS

200 bar

220bar

220bar

30bar

15L/min

350

bar

0.4

L/m

280bar

300bar 350bar

200bar

280bar

FA10 MICRONS

300 bar 300 bar

300bar

300bar 300bar

2.00.8

a1

LS1

FS

21

PT

B A

VCD

S.

MC

PF

DC

Y633

VS

Y127Y126

Y611

VRD

Y103

Y955

Y111

Y110

Y146

Y117

Y116

Y102 Y101

Y142Y125

Y112

S

Q

O

M

K

I

G

E

C

A

21 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

A

C

E

G

K

M

O

Q

S

I

42


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H YD RA UL IC SC HE MA TI C D IA GR AM SMHT 10160 - 10180



















C.1 Manifold 1 O35

C.2 Manifold 2 Q39

C.3 Manifold 3 Q41



CSP Pilot-operated relief valve C7 / C13




E.C.L. Levelling check solenoid valve O11





FR Exhaust lter S34



M Manipulator M18

MC Brakes pump A38


MT I.C. engine M22

M.V. Fan motor Q16

P Pump Q4


PF Brake pedal A35


P.V. Pump Q9


Rd Oil radiator Q38

S. Brakes liquid tank C40








VL Lift cylinder A8 DE 180x120 C 1917

V.L.*1 Levelling cylinder 1 M8 / M9 DE 160x80 C 70

V.L.*2 Levelling cylinder 2 M12 DE 160x80 C 70









LEGEND


11/60

70

(20/02/2012) 70-02-M184EN


LAYOUT


512 bar

C.3C.2

C.1

MI

PH

V.I.

3bar

Rd

FA

2bar

FR

ab

X2X1 B

AT

R T1 T2

G S MAX1 X2

A

B

MBPS

3 bar

MT

1.5

Lpst

(

)

n 0.8

()

n

2.00.8 2.00.8

) (

2.00.8

a3a2

b2 b3

P.A.

205bar

1.2 1.2

V.L.*1

E.C.L.

23BAR0,7LITRE

A

VC

VL

C2 C1

V2 V1CPD

PL

VT

R

C2C1

V1 V2CSDV1

C1

V2

C2

CSP

300bar

175bar

L B

A

M.V.

FA

VM

B

S

X


a4a1 b4

200bar

T P

M

CSP

C2

V2

C1

V1

VI

P.V.

V.C.I.

b1

D.

21

PT

B A E.F.S.

BA

TP

R

L

P

T

V.D.

V.D.I.D.

E

VSLR

FS

VCLR FDAV

FDAV

FDAR

FDAR

LS

200 bar

220bar

220bar

30bar

15L/min

350

bar

0.4

L/m

280bar

300bar 350bar

200bar

280bar

FA10 MICRONS

300 bar 300 bar

300bar

300bar 300bar

V.L.*2

2.00.8

a1

LS1

FS

21

PT

B A

VCD

S.

MC

PF

DC

Y633

VS

Y127Y126

Y611

VRD

Y103

Y115Y114

Y955

Y111

Y110

Y146

Y117

Y116

Y102 Y101

Y142Y125

Y112

S

Q

O

M

K

I

G

E

C

A

21 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

A

C

E

G

K

M

O

Q

S

I

42


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H YD RAULIC SCHEMATI C D IAGR AMS

MHT 10210 - 10225



















A Pressure accumulator C38 / E8 / O18

C.1 Manifold 1 O35

C.2 Manifold 2 Q39

C.3 Manifold 3 Q41



CSP Pilot-operated relief valve C7 / C10 / C14




E.C.L. Levelling check solenoid valve O12 / O13





FR Exhaust lter S34



M Manipulator M18

MC Brakes pump A38


MT I.C. engine M22

M.V. Fan motor Q17

P Pump Q4


PF Brake pedal A35


P.V. Pump Q7


Rd Oil radiator Q38

S. Brakes liquid tank E40


V.C.A. Accumulators charge valve M9







VL Lift cylinder A8 / A9 DE 180x120 C 1917

V.L.*1 Levelling cylinder 1 M10 DE 160x80 C 70

V.L.*2 Levelling cylinder 2 M13 / M14 DE 160x80 C 70








LEGEND


13/60

70

(20/02/2012) 70-02-M184EN


LAYOUT


512 bar

C.3C.2

C.1

MI

PH

V.I.

3bar

Rd

FA

2bar

FR

ab

X2X1 B

AT

R T1 T

G S MAX1 X2

A

B

MBPS

3 bar

MT

1.5

Lpst

(

)

n 0.8

()

n

2.00.8 2.00.8

) (

2.00.8

a3a2

b2 b3

P.A.

205bar

1.2 1.2

V.L.*1

E.C.L.

23BAR0,7LITRE

A

VC

VL

C2 C1

V2 V1CPD

PL

VT

R

C2C1

V1 V2CSDV1

C1

V2

C2

CSP

300bar

175bar

L B

A

M.V.

FA

VM

B

S

X


a4a1 b4

200bar

T P

M

CSP

C2

V2

C1

V1

VI

V.C.I.

b1

D.

21

PT

B A E.F.S.

BA

TP

R

L

P

T

V.D.

V.D.I.D.

E

VSLR

FS

VCLR FDAV

FDAV

FDAR

FDAR

LS

200 bar

220bar

220bar

30bar

15L/min

350

bar

0.4

L/m

280bar

300bar 350bar

200bar

280bar

FA10 MICRONS

300 bar 300 bar

300bar

300bar 300bar

V.L.*2

2.00.8

a1

LS1

P.V.

FS

21

PT

B A

VCD

S.

MC

PF

VL

V1

C1

V2

C2

CSP

300bar

23BAR0,7LITRE

A

B

V.C.A.

Pa 20bar1.4Lt

A

10 MICRONS

DC

280bar

Y633

VS

Y127Y126

Y611

VRD

Y103

Y115Y114

Y955

Y111

Y110 Y146

Y117

Y116

Y102 Y101

Y142Y125

Y112

S

Q

O

M

K

I

G

E

C

A

21 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41

A

C

E

G

K

M

O

Q

S

I

42


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H YD RAULIC SCHEMATI C D IAGR AMS


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HYDRAULIC COMPONENTS LOCATION

page

COMMON HYDRAULIC COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

COMMON HYDRAULIC COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

MHT 10120 HYDRAULIC COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MHT 7140 990 10160 10180 10210 10225 HYDRAULIC COMPONENTS . . . . . . 6


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2 HYDRAULIC COMPONENTS LOCATION

POSITION OF THE HYDRAULIC COMPONENTS

Ref. Description

A Pressure accumulator

C.1 Manifold 1

C.2 Manifold 2

C.3 Manifold 3

CPD Block and balancing valve

CSD Double block and balancing valve

CSP Pilot-operated relief valve

D. Directional control valve

FA Suction lter

FDAR Rear axle disk brake

FDAV Front axle disk brake

FR Exhaust lter

FS Parking brake control cylinder

M Manipulator

MC Brakes pump

MI Hydrostatic motor

PH Hydrostatic pump

PF Brake pedal

R.a. Air/water radiator

R.o. Oil radiator

S. Brakes oil tank

VC Compensation cylinder

VI Slewing cylinder

VL Lift cylinderV.L. Levelling cylinder

VT Boom extension cylinder


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3HYDRAULIC COMPONENTS LOCATION

Only for MHT 10120

Only for

MHT 10210 and 10225

Only for MHT 10120

COMMON HYDRAULIC COMPONENTS

M

C.1

VT

D.

V.L.VI

VI

V.L.

V.L.

VL

VL

VC

CPD

CSP

CSP

CSP

CSP

CSD


18/60

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H YD RA UL IC CO MP ON EN TS LO CA TI ON

COMMON HYDRAULIC COMPONENTS

C.3

FR

FA

C.2

R.a.

R.o.


19/60

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5HYDRAULIC COMPONENTS LOCATION

MHT 10120 HYDRAULIC COMPONENTS

A

MC

PF

FDAV

MI

PH

FDAR


20/60

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H YD RA UL IC CO MP ON EN TS LO CA TI ON

MHT 7140 - 990 - 10160 - 10180 - 10210 - 10225 HYDRAULIC COMPONENTS

A

MI

PH

PF

S

MC

FDAV

FDAR


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HYDRAULIC CONTROL AND ADJUSTMENT

page

CHECKING PRESSURE VALUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

RELIEF VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

BOOM MOVEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

COMPENSATION EXCLUSION CIRCUIT VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SLEWING CYLINDER BLOCK VALVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LEVELLING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

DIRECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CHECKING THE HYDRAULIC PRESSURE OF THE LS CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . 6

CHECKING AND SETTING THE STANDBY PRESSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CHECKING THE ANTISTALL VALVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6


22/60

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70

2 HYDRAULIC CONTROL AND ADJUSTMENT

Remove the protective cap of the pressure test (Ref. 2) tted

on the side of the directional control valve (Ref. 1).

In vehicles 7140 - 990 - 10160 - 10180 - 10210 - 10225 access

the directional control valve from the vehicle area under the

boom.

For type 10120 vehicles, access the pressure test connector

(Ref. 2) through hole (Ref. 3) on the LH side of the truck frame.

Connect a pressure gauge to the pressure test connector (Ref. 2)

by means of the exible tube provided for the purpose (Ref. 4).

CHECKING PRESSURE VALUES

To check the pressures, use a pressure gauge with minimum scale 400 bar.

The oil temperature must be about 60, the I.C. engine must be at the maximum rpm for all the checks.

If the pressure is 200 bar, rst of all, check the anti-block valve alongside the pump (LH side).Check the consistency of the values measured with the data shown on the hydraulic layouts:

70 - 02 HYDRAULIC SYSTEM LAYOUTS

2

2

4

3

1


23/60

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70

3HYDRAULIC CONTROL AND ADJUSTMENT

LS

pst

L

Pressure check Value Adjustment

Relief valve 350 bar Ref. 5Anti-shock valve on extension cylinder rod side 300 bar Ref. 6

Anti-shock valve on slewing cylinder rod side 350 bar Ref. 7

Anti-shock valve on slewing cylinder rod bottom plate side 200 bar Ref. 8

Optional 280 bar Ref. 9 and 10

RELIEF VALVE

Check the pressure value of the relief valve bringing the boom all the way down; if the pressure is not

set at the correct value (350 bar), adjust the screw (Ref. 5) on the valve.

BOOM MOVEMENTS

Check the pressure values of the various movements of the boom, bringing the cylinders concerned to

the limit stop and act on the valves concerned to adjust them (see Table).

68 10

7 9

5


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COMPENSATION EXCLUSION CIRCUIT VALVE

The correct values of the compensation cylinder pressures

must be:

Rod side anti-shock valve = 350 bar

Bottom plate side anti-shock valve = 200 barIn optimum value conditions, the adjuster screw (Ref. 11) on the

bottom plate side must project by about 7mm and the adjuster

screw (Ref. 12) on the rod side must project by about 6 mm.

If the values are not correct, act as follows:

Slacken screws (Ref. 11 and 12) completely

Raise the boom all the way and act on the slewing movement

Bring the boom all the way down and act on the slewing

movement; repeat these operations 3 or 4 times to remove

air, if any, from the compensation circuit

Retighten the adjuster screw (Ref. 11) until it projects byabout 7 mm.

Retighten the adjuster screw (Ref. 12) until it projects by

about 6 mm.

SLEWING CYLINDER BLOCK VALVE

In case the slewing movement start is delayed or is slowed, act

on the control air regulator valve (Ref. 13) of the slewing cylinder,

always leaving a minimum valve opening pressure of 80 bar.

11

12

11

12

MHT 10120

MHT 7140 - 990- 10160 - 10180 -

10210 - 10225

MHT 10120

MHT 7140 - 990 - 10160- 10180 - 10210 - 10225

13

13 13


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5HYDRAULIC CONTROL AND ADJUSTMENT

LEVELLING

Check the levelling pressure by means of the pressure test

connector (Ref. 14) positioned on the pump and act on valve

(Ref. 15) to adjust the pressure.

Check the levelling until the cylinder limit stop is reached; thevalue must be 205 bar.

DIRECTION

After adjusting the relief valve pressure to the correct value

(350 bar), check the pressure of the power steering (Ref. 16), by

means of the same pressure test connector and, if necessary,

act on valve (Ref. 17) to bring the value to 190 bar.

15

14

16

17


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CHECKING THE HYDRAULIC PRESSURE OF THE LS CIRCUIT

Check the hydraulic oil level.

Dismantle the housing of the valves unit (Ref. 18) behind

the vehicle.

Bring the oil to the operating temperature (50) by performinghydraulic movements.

Note: Below 1200 min-1the valves unit pressure does not exceed

200 bar.

CHECKING AND SETTING THE STANDBY PRESSURE

(To make the connection also adjust the FR regulator)

Connect the 0-600 bar digital pressure gauge to the pressure

test connector (Ref. 2). Insert the rev counter.

With the engine running at minimum speed and without

making any movement, read the pressure value on the

pressure gauge.

Standby pressure: 30 bar 3.

If the pressure is not correct, turn the FR adjuster screw (Ref.

19) on the main pump. Tighten the screw to increase the

pressure, slacken it to reduce the pressure.

Note: If the pressure cannot be adjusted by means of this

operation, refer to the indications on page 2

Using the rev counter, check the minimum engine speed:

850 min-1.

Adjust, if necessary.

CHECKING THE ANTI-STALL VALVE

A - With the I.C. engine running at minimum speed, press the

manipulator button (accessories circuit).

- Progressively increase the engine rpm.

- Note down the number of rotations at which the pressurechanges from 200 to 350 bar (approx. 1200 100 min-1).

B - With the I.C. engine running at maximum speed, press the

manipulator button (accessories circuit).

- Progressively reduce the I.C. engine rpm.

- Note down the number of rotations at which the pressure

changes from 350 to 200 bar (approx. 1200 100 min-1).

Note: The anti-stall valve (Ref. 20) does not work correctly in

the following cases: The main pressure remains at 200 bar.

The main pressure remains at 350 bar (engine stop at minimum).

Pressure unstable.

18

2

19

20


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HYDRAULIC COMPONENTS REMOVAL

page

PREPARATION AND SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

DISMANTLING THE DIRECTIONAL CONTROL VALVE . . . . . . . . . . . . . . . . . . . . . . . . . .3

DISASSEMBLING THE CYLINDERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

DISASSEMBLING THE COMPENSATION CYLINDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

DISASSEMBLING THE LIFT CYLINDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DISASSEMBLING THE EXTENSION CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

REMOVING THE SLEWING CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12


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2 HYDRAULIC COMPONENTS REMOVAL

PREPARATION AND SAFETY INSTRUCTIONS

Position the truck on a level surface.

Raise the boom and set it in safety condition.

Discharge the pressure from the hydraulic system.

Deactivate the ignition key and disconnect the negative pole from the battery.

Specic tools:

- Crane for lifting (5000 kg. minimum).

DISMANTLING THE CYLINDERS AND DIRECTIONAL CONTROL VALVE

Only for MHT 10120

Only for

MHT 10210 and 10225


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3HYDRAULIC COMPONENTS REMOVAL

DISMANTLING THE DIRECTIONAL CONTROL

VALVE

Slacken the screws (Ref. 1) and remove the upper collar (Ref. 2).

Slacken the screws (Ref. 3) and remove the bottom collar (Ref. 4).

The metal tubes (Ref. 5) can thus be removed to make it easy

to remove the directional control valve.

Mark all the pipes and connections with a marker pen, before

disassembling, to ensure correct positioning in the reassembly

phase.

Remove all the hydraulic pipes from the directional control

valve (Ref. 6).

bPlug all the pipes and connectors to prevent impuritiesfrom contaminating the hydraulic circuit.

1

2

3

4

5

6


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Mark all the electrical connections with a marker pen, before

disassembling, to ensure correct positioning in the reassembly

phase.

Remove the electrical connections from the directional control

valve (Ref. 6).

Remove the collar (Ref. 7), positioned on the outside of the truck

frame, after slackening the screws (Ref. 8).

Disconnect the metal tube (Ref. 9) from the union (Ref. 10)

connected to the directional control valve.

6

8

7

9

10


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Remove the connector (Ref. 10) from the directional control valve.

Slacken the screws (Ref. 11) which block the directional control

valve (Ref. 6) on the truck frame.

Remove the directional control valve (Ref. 6) from the vehicle

using ropes and an overhead crane.

(Rif. 6) dalla macchina.

10

6

11

6


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DISASSEMBLING THE CYLINDERS

DISASSEMBLING THE COMPENSATION CYLINDER

Remove the tubes (Ref. 1 and 2) on the compensation cylinder(Ref. 3).


Slacken the screw (Ref. 4) and nut (Ref. 5) to release the top

pin (Ref. 7).

Secure the compensation cylinder (Ref. 3) by means of the rope

(Ref. 6) connected to an overhead crane.

Remove the top pin (Ref. 7) which secures the compensation

cylinder (Ref. 3) to the boom.

2

1

4

5

3

6

7

3


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Using an overhead crane, lower the compensation cylinder (Ref.

3) until it comes to rest at the base of the truck frame.

Remove the grease nipple tube (Ref. 8) from the base of the

compensation cylinder (Ref. 3).

Slacken the screw (Ref. 9) and nut (Ref. 10) to release the bottompin (Ref. 11).

Remove the bottom pin (Ref. 11) which blocks the compensation

cylinder (Ref. 3) to the truck frame.

3

8

9

10

11


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With the help of an overhead crane, remove the compensation

cylinder (Ref.3) from the vehicle.

DISASSEMBLING THE LIFT CYLINDER

Place the boom (Ref. 1) on a supporting column(Ref. 2) that can hold the weight.

Remove the grease nipple tube (Ref. 8) on the base of the liftcylinder (Ref. 4).

Slacken the screw (Ref. 5) and nut (Ref. 6) to release the bottom

pin (Ref. 7).

3

2

3

4

6

5

7

1


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Remove the bottom pin (Ref. 7) which blocks the lifting cylinder

(Ref. 4) to the boom.

Note: It may be necessary to remove the wheel or steer it before

switching off the engine.


pin (Ref. 10).

Secure the lift cylinder (Ref. 4) to an overhead crane and usingan extractor, remove the top pin (Ref. 10).

Place the lift cylinder (Ref. 4) on the truck frame.

7

9

8

104

4


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Remove the unions (Ref. 1) from the lift cylinder valve (Ref. 12).


Remove the lift cylinder (Ref. 4) from the vehicle with the help

of an overhead crane.

FOR MHT 10210 AND 10225 ONLY

Vehicles MHT 10210 and 10225 are equipped with two lift

cylinders; the procedure for dismantling the grease nipples (Ref.

3) and bottom pin (Ref. 7) are the same as that described above.


pin (Ref. 10).

Secure the rst lift cylinder (Ref. 13) to an overhead crane and

using an extractor, remove the top pin (Ref. 10) half way.

Place the rst lift cylinder (Ref. 13) on the truck frame.

Secure the second lift cylinder (Ref. 14) to an overhead crane

and remove the top pin (Ref. 10) completely.Place the second lift cylinder (Ref. 14) on the truck frame.

With the help of an overhead crane, remove the lift cylinders

(Ref. 13 and 14) one at a time.

11 12

4

98

13

14

10


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DISASSEMBLING THE EXTENSION CYLINDER

Remove the Seeger ring (Ref. 1) from the front hinge pin (Ref.

2) of the extension cylinder.

Remove the front hinge pin (Ref. 2).

Raise the boom until the rear hinge pin (Ref. 3) is aligned andaccessible through the hole (Ref. 4) on the truck frame.

Remove the Seeger ring (Ref. 5) and remove the rear pin (Ref. 3).

1

2

2

3

4

5

3


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Remove the unions (Ref. 6) from the extension cylinder valve

(Ref. 7).


Remove the extension cylinder (Ref. 10) from the vehicle with

the help of an overhead crane.

REMOVING THE SLEWING CYLINDER

Slacken the screws (Ref. 1) and remove the guard (Ref. 2) from

the head of the boom.

Unscrew the nut (Ref. 3).

6

7

8

1

2

3


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Remove the screw (Ref. 4).

Unscrew the ring nut (Ref. 5) to release the pin (Ref. 6) which

blocks the slewing cylinder (Ref. 7) rod on the quick-release

coupling (Ref. 8).

Place the quick-release coupling (Ref. 8) on a pallet truck (Ref.

9) and remove the pin (Ref. 6).

Remove the unions (Ref. 10) from the slewing cylinder valve

(Ref. 11).


4

5

6

7

8

8

9

6

10

11


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Fit an eyebolt (Ref. 12) or a chain to the top of the slewing cylinder

(Ref. 7) through the slot present on the top of the boom head.

Slacken the screw (Ref. 13) and its nut to release the top pin

(Ref. 14) of the slewing cylinder.

Remove the top pin (Ref. 14) which blocks the slewing cylinder

on the boom head.

With the help of an overhead crane (Ref. 15), lower the cylinder

until it comes out of the boom head.

7

12

13

14

14

15


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Remove the slewing cylinder (Ref. 7) from the vehicle.

FOR MHT 10120 ONLY

The MHT 10120 vehicle is equipped with two slewing cylinders;the procedure for removing the quick-release coupling (Ref.

8) and the pin (Ref. 6) which blocks the rods of the slewing

cylinders to the quick-release coupling is the same as that

described above.

Slacken the screw (Ref. 13) and its nut to release the top pin

(Ref. 14) of the slewing cylinders.

Secure the rst slewing cylinder (Ref. 16) to an overhead crane,

remove the top pin (Ref. 14) half way and rest the cylinder (Ref.

16) on the ground.

Secure the second slewing cylinder (Ref. 17) to an overhead

crane, remove the top pin (Ref. 14) completely and rest the

cylinder (Ref. 17) on the ground.

7

1617


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HYDRAULIC COMPONENTS REFIT

page

PREPARATION AND SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

REASSEMBLING THE CYLINDERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

REASSEMBLING THE SLEWING CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

REASSEMBLING THE EXTENSION CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

REASSEMBLING THE LIFT CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

REASSEMBLING THE COMPENSATION CYLINDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

REASSEMBLING THE DIRECTIONAL CONTROL VALVE . . . . . . . . . . . . . . . . . . . . . . . . .12


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2 HYDRAULIC COMPONENTS REFIT

PREPARATION AND SAFETY INSTRUCTIONS

Position the truck on a level surface.

Raise the boom and set it in safety condition.

Discharge the pressure from the hydraulic system.

Deactivate the ignition key and disconnect the negative pole from the battery.

Specic tools:

- Crane for lifting (5000 kg. minimum).

REASSEMBLING THE CYLINDERS AND DIRECTIONAL CONTROL VALVE

Only for MHT 10120

Only for

MHT 10210 and 10225


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3HYDRAULIC COMPONENTS REFIT

REASSEMBLING THE CYLINDERS

REASSEMBLING THE SLEWING CYLINDER

Insert the chain of the overhead crane (Ref. 1) in the slot on thetop of the boom and x the chain to the head of the slewing

cylinder

(Ref. 2) or to an eyebolt tted on the cylinder.

With the help of an overhead crane lift the slewing cylinder

(Ref. 2) at the top of the boom.

Insert the upper hinge pin (Ref. 3) to block the slewing cylinder

to the boom.

Fit the screw (Ref. 4) and its nut to block the top pin (Ref. 3) of

the slewing cylinder.

3

1

2

4

3


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Reconnect the hydraulic tubes (Ref. 5) on the slewing cylinder

valve (Ref. 6), taking care to position these correctly, according

to the markings made during the disassembly.

Use a pallet truck (Ref. 7) to bring the quick-release coupling

(Ref. 8) to its position on the boom.

Insert the hinge pin (Ref. 9) of the quick-release coupling onthe boom.

Insert the pin (Ref. 11) and screw the nut (Ref. 10) on the quick-release coupling (Ref. 8).

Fit the screw (Ref. 12).

8

7

9

5

6

10

11

2

8

12


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Screw the nut (Ref. 13).

Fit the guard (Ref. 14) by means of the screws (Ref. 15).

FOR MHT 10120 ONLY

The MHT 10120 vehicle is equipped with two slewing cylinders.

Using an overhead crane lift the rst slewing cylinder (Ref. 16)

at the top of the boom, insert the top pin (Ref. 3) half way to

block the cylinder (Ref. 16).

Using an overhead crane lift the rst slewing cylinder (Ref. 17)

at the top of the boom, insert the top pin (Ref. 3) completely

to block the cylinder (Ref. 17).

The procedure for retting the quick-release coupling (Ref. 8)

and pin (Ref. 11) which blocks the rods of the slewing cylinders tothe quick-release coupling is the same as that described above.

15

14

13

16 17


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REASSEMBLING THE EXTENSION CYLINDER

Using an overhead crane reposition the extension cylinder

(Ref. 1) on the vehicle.

Reconnect the hydraulic tubes (Ref. 2) on the extension cylinder



Raise the boom until the hole (Ref. 5) for the rear hinge pin isvisible through the hole (Ref. 4) on the truck frame.

Ret the hinge pin (Ref. 6) and block by means of the Seeger

ring (Ref. 7).

5

4

7

6

1

2

3


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Insert the front hinge pin (Ref. 8).

Ret the Seeger ring (Ref. 9) on the front hinge pin (Ref. 8) of

the extension cylinder.

REASSEMBLING THE LIFT CYLINDER

Reposition the lift cylinder (Ref. 1) on the vehicle with the help

of an overhead crane.

Reconnect the hydraulic tubes (Ref. 2) on the lift cylinder valve

(Ref. 3), taking care to position these correctly, according to the

markings made during the disassembly.

9

8

8

1

2 3


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Using an overhead crane raise the lift cylinder

(Ref. 1) until the hole on the cylinder rod is aligned with that

on the boom.

Insert the hinge pin (Ref. 4) of the lift cylinder (Ref. 1) on the

boom.

Fit the screw (Ref. 5) and the nut (Ref. 6) to block the top pin(Ref. 4).

Insert the bottom pin (Ref. 7) to hinge the lift cylinder (Ref. 1)

to the boom.

41

1

7

6

5


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Fit the screw (Ref. 8) and the nut (Ref. 9) to block the bottom

pin (Ref. 7).

Refit the grease nipple tube (Ref. 8) on the base of the lift

cylinder (Ref. 1).

Remove the supporting column (Ref. 11) which supported theboom (Ref. 12).

FOR MHT 10210 AND 10225 ONLY

Vehicles MHT 10210 and 10225 are equipped with two lift

cylinders.

Using an overhead crane, reposition the rst lift cylinder (Ref.

13) on the vehicle, insert the top pin (Ref. 4) half way to block

the cylinder (Ref. 13).Using an overhead crane, reposition the second lift cylinder

(Ref. 14) on the vehicle, insert the top pin (Ref. 4) completely

to block the cylinder (Ref. 14).

The procedure for refitting the hydraulic tubes (Ref. 2), the

bottom pin (Ref. 7) and grease nipple (Ref. 10) are the same as

that described above.

Fit the screw (Ref. 15) and the nut (Ref. 16) to block the top pin

(Ref. 4).

10

9

8

1

11

1314

1615

4

12


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REASSEMBLING THE COMPENSATION CYLINDER

With the help of an overhead crane, reposition the compensation

cylinder (Ref. 1) on the vehicle.

Insert the pin (Ref. 2) to hinge the compensation cylinder (Ref.

1) to the truck frame.

Fit the screw (Ref. 3) and the nut (Ref. 4) to block the pin (Ref. 2).

Refit the grease nipple tube (Ref. 5) on the base of the

compensation cylinder (Ref. 1).

1

2

3

4

5


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Using an overhead crane lift the compensation cylinder

(Ref. 1) until the hole on the cylinder rod is aligned with that

on the boom.

Insert the pin (Ref. 6) to hinge the compensation cylinder (Ref.

1) to the boom.

Fit the screw (Ref. 7) and the nut (Ref. 8) to block the pin (Ref. 6).

Reconnect the hydraulic tubes (Ref. 9 and 10) on the compensation

cylinder (Ref. 1), taking care to position these correctly, according


1

6

8

7

10

9

1


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REASSEMBLING THE DIRECTIONAL CONTROL

VALVE

Reposition the directional control valve on the vehicle using

ropes and an overhead crane.(Rif. 1) sulla macchina.

Block the directional control valve (Ref. 1) on the truck frame

by means of the screws (Ref. 2).

Ret the union (Ref. 3) on the directional control valve from the

outer part of the truck frame.

Ret the metal tube (Ref.4) on the union (Ref. 3).

1

1

2

3

4

3


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Ret the collar (Ref. 5), positioned on the outside of the truck

frame, tightening the screws (Ref. 6).

Reconnect the electrical connections on the directional control


to the markings made in the disassembly step.

Reconnect all the hydraulic pipes on the directional control valve(Ref. 1), taking care to reposition them correctly, by following

the markings made in the disassembly phase.

Secure the metal tubes (Ref. 7) to the truck frame by tting the

bottom collar (Ref. 8) and screws (Ref. 9).

1

6

5

1

9

8

7


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Ret the upper collar (Ref. 10) by means of the screws (Ref. 11).

11

10


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HYDRAULIC SPECIFIC TOOLING

page

PRESSURE GAUGES STANDARD BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

DIGITAL PRESSURE GAUGE BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

FUNCTIONS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SAFETY BLOCK FOR LIFT PISTON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4


58/60

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2 HYDRAULIC SPECIFIC TOOLING

Pressure gauges standard box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549671

Consisting of:

1 - 1 1/9 bar Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549882

2 - 1 0/40 bar Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549883

3 - 2 0/60 bar Pressure gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549884

4 - 1 0/400 bar Pressure gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549885

5 - 2 0/600 bar Pressure gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549886

6 - 4 standard hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5498877 - 2 hoses for Maniscopic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549888

8 - 7 Pressure gauge connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549889

1 2 3 3 4 5 5 6

78

PRESSURE GAUGES STANDARD BOX

The box contains all the components necessary for measuringthe pressures on all Manitou products.


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3HYDRAULIC SPECIFIC TOOLING

Digital Pressure gauge Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 662187

Consisting of:

1 - 1 Digital pressure gauge Mano dP HP 700 bar

2 - 1 Hose for measurement DN2 1215/1620, L = 1.5m, 630 bar

3 - 2 Hoses for measurement DN2 1620/1620, L = 1.5m, 630 bar

4 - 2 Adaptors for Pressure gauge 1620

DIGITAL PRESSURE GAUGE BOX

FUNCTIONS:

Pressure gauge Function: the display makes all the following

options possible:

Input temperature and pressure at +/- 2C

Input minimum and maximum pressure P1 (700 bar in

Class 0.1)

Output minimum and maximum pressure P2 (700 bar in

Class 0.1)

Differential pressure dP=P1-P

Hold Function: the user can put the display on hold at any

moment to be able to take down notes.

Unit Function: the user can change the unit of measurement

(bar, PSI, kPa, mCe) at any moment.

Tare Function: allows zero offset.

Leaks test function: makes if possible to measure pressure

variations in a predened time.

Save Function: up to a maximum of 16000 values can be saved.

The sampling frequency can be set.

Zero Function: the zero setting is done on 2 sensors.


60/60

70

4 HYDRAULIC SPECIFIC TOOLING

SAFETY BLOCK FOR LIFT PISTON

Used for setting the raised boom in safety

condition.

Prevents accidental falling of the boom in case

of depressurization of the system.

Safety block for MHT 990 - 7140 - 10120 - 10160 - 10180. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 909390

Safety block for MHT 10210 - 10225. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 909398

Documents

MHT-X 10120 L E3 Groupe 70 (Hydraulic)