Ponsse H73

S e r v i c e t r a i n i n g


1

2

3

4

5

6

7

8

9

10

Safety regulations

Technical data

Electrical equipment

Adjustment and service instructions

Testing instructions

Hydraulics

Pressure adjustments

Extra equipments

Scheduled maintenance


00004052000 1.1

Safety regulations

1. Use caution and patiencewhen servicing the harvesterhead.

2. Immediately report anymalfunctions in the head toyour foreman or the personresponsible for servicing.

3. The engine should be shut offduring servicing.

4. Avoid working alone.Keep a mobile phone nearyou when you service theharvester outside the cab.Store an emergency alarmnumber in one of the quickselect phone numbers.

5. Service the harvesting headaccording to themanufacturer�s serviceschedule.

6. If you are not familiar with theconstruction of the machine,ask the manufacturer forinstructions before beginningto service or repair it.

7. Danger to life!Never attempt to service thehead near the range ofmovement of the saw, thedelimbing knives or the feedrollers when the engine isrunning.

Safety while servicing and repairing:

8. Danger to life!When servicing the head,make definitely sure thatnobody starts the harvester!If the harvester is started, theknives and rollers will close,the saw will return to its homeposition and the head willreturn to a horizontal position!

9. Manual control:

Each directional valve isequipped with a precontrolsolenoid which allows thedirectional valve to becontrolled manually bypressing the end spindle.

9.1 Danger to life!Avoid using the manualcontrol when troubleshootingor repairing the harvesterhead. If maual control isabsolutely necessary beextremely caution.

9.2 Do not use the manual controlto tilt the harvester head oroperate the rotator.

9.3 Be sure of the correct valve.Beware of the spinningmotionof the feed rollers and themovement of the delimbingknives and the saw bar.


00004052000 1.2

Safety regulations

10. When testing the functioningof the saw:

- The harvester head mustbe in a horizontal position

- Nobody is to be in line withthe saw

- Keep the harvester headas near to the ground aspossible

11. Never raise the harvesterhead near the cab windowswhile testing the saw.

12. When servicing indoors, thesaw must only be tested withthe chain removed.

13. Remove the pressure fromthe hydraulic system beforebeginning to service or repairjobs.

14. Do not clean or lubricate themachine while the engine isrunning.

15. Always wear protective gloveswhen handling the saw chain.

16. Pay special attention tocleaning and inspecting thelimit switches, saw bar, sawchain and delimbing knives.Do not slit yourself to thecutting edge of the delimbingknives.Always wear protective gloveswhen handling the delimbingknives.

17. Be aware of the danger ofslipping when working on topof the harvester head.

18. If oil gets on your skin, re-member to clean it off. Takecare of cuts and scratchesimmediately.

19. Use safety goggles in serviceand repair jobs.

20. Do not change the pressuresettings without the approvalby the manufacturer.

21. Use only sound tools andapproved lifting equipment,abandon / repair damagedtools.

22. Danger!Be careful when removing hotliquids or oils from themachine. Hot liquid or oil cancause serious burn injuries.

23. Disposal of liquids, oil or otherproblem wastes:

- Do not pour into ground orwater

- Find out the proper ways todispose of them

- Note the local environmentalregulations


00028022000 2.1

H73001

Technical data

12

3

11

10

9

8

7

6

5

4

12

13

15

14

18

17

16

5

3

1. Chain lubricating oil container2. Saw bar3. Feed rollers4. Reaction bar5. Delimbing knives (front)6. Delimbing knife cylinder (front)7. Feed roller cylinder8. Cradle9. Tilt cylinder10. Saw bar cylinder

11. Saw motor12. Rotator13. Serial number

(Give the serial number whenordering spare parts or otherwisecontacting the manufacturer)

14. Delimbing knives (rear)15. Delimbing knife cylinder (rear)16. Swing coupling17. Feeding motor (upper side)18. Feeding motor, 2 pcs (lower

side)


00028022000 2.2

H73001

Technical data

Weight 950 kgHeight 1515 mmWidth:open 1440 mmPower consumption 70-90 kWOperating pressure 20-24 MpaOil flow requirement 200-300 l/minRotator SISU MR10AMF

Saw unit: hydraulic chain saw (F11-19)Power 45 kWSawbar length 750 mmChain speed 44 m/sChain pitch 0.404"Cutting diameter 640 mm

Feeding unit:Feeding type 3 spiked steel rollersFeeding force 26 kNFeeding speed 0-4 m/s

Delimbing unit: One fixed ond four movable knives.Delimbing diameter 670 mm

Delimbing knives and feed rollers separatelycontrollable

Measuring and control automation:PONSSE 1000 or PONSSE OPTI systemAutomatic volume measurement with datastorage and printer output.


00028022000 3.1

Harvesterconnector

Valve connectors

Saw sensor

Length measuresensor

Diameter sensor

Tilt sensor

Colour markingconnectors

Electrical equipmentElectrical harness / sensoring


00002052000 3.2

To crane

Computer

Electrical equipmentOptinet

To pivot frame


00028022000 3.3

Electric diagram (IPS)

Location number of pin connector box Directional valvesolenoids+diodes

Saw rotation

Saw feed

Slow forward

Slow reverse

Rollers open

Front knives open

Fast forward

Fast reverse

black

black

black

brown

brown

blue

brown

blueSaw limit A

Saw limit B

black brown

blueTilt limit

Feed current length sensorred

yellow

greenblue

Length sensor Diametersensor

blueyellowTilt upRear knives open

Rear knives open extra pressureColor 1 (blue)

Color 2 (red)

Urea valve

Rotator right

Rotator left

Front knives open extra pressure

GND


00028022000 3.4

Electric diagram, Knutsson

GND

KNUTSSON

Feed rollers 2-power system

Lubrication oil pump

Location number of pin connector box Directional valvesolenoids+diodes

Saw rotation

Saw feed

Slow forward

Slow reverse

Rollers open

Front knives open

Fast forward

Fast reverse

black

black

black

brown

brown

blue

brown

blueSaw limit A

Saw limit B

black brown

blueTilt limit

Feed current length sensorred

yellow

greenblue

Length sensor Diametersensor

blueyellowTilt upRear knives open

Color 1 (blue)

Color 2 (red)

Urea valve

Rotator right + (KGK-)

Rotator left+(KGK-)

Front and rear knives extra pressure


00029022000 4.1

Sensorcasing

Sensor

Rubbercoupling

Meteringwheel

Adjustment and serviceinstructions

Length measuring device


00029022000 4.2


Length measuring device

Testing the length measurement

1. Lift the harvester head so that you can rotate the measuring roller.2. Shut the engine off.3. Turn on the measurement system, switch on the power to the harvester

head by pulling the knob out on the main switch (moto-switch).4. Go to the length calibration programming mode.5. Write down the original value of the length correction.6. Set the length correction of pine to zero.7. In the Handling mode, select pine for the tree sort.8. Press the ENTER key to zero the length.9. Mark the zero point on the measuring roller and on the measuring roller

housing. Be careful not to move the roller.10. Check that the length on the display is zero.11. Rotate the measuring roller with force e.g., by kicking it.12. Rotate the measuring roller so the zero mark on the measuring roller is

inline with the zero mark on the measuring roller housing.13. Check the length on the display. It should be divisible by 50 without a

remainder. E.g., 50, 100, 150, 200, 250, 300, etc.

If the display shows some other length, the measuring system is notfunctioning correctly at high speeds.

ATTENTION!After testing, change the lengthcorrection to the original value.

Repair:

Adjust the gap between the sensor and code roller again. If this does not help,replace the sensor.


00029022000 4.3

AB


Diameter measuring

Before calibrating of the diameter, you should check thefollowing:

1. The tree travels in the centre of the harvester head. Ifnecessary, adjust the tree (a round one) to the centreusing the reaction brace .

2. Check that the measurements A and B are equal. Ifthe difference is greater than 5 mm, an adjustment hasto be made. A half revolution of the reaction brace isequivalent to a 5 mm change in the difference betweenmeasurements A and B. Recheck the measurements.

3. When the feeding rollers are closed, the sensorreading must be 30. If the reading is something else, itcan be adjusted by turning the sensorbody.


00029022000 4.4

1 mm

ABC

1. Turn the engine off and make sure no one is able to startthe machine.

2. Turn the saw bar to its upper position and remove the oldsensors.

3. Use a thin-bladed screwdriver or similat tool to check thatthe detector holes do not coincide with the sensorlocations (A, B).

4. Lightly screw the new sensors into place until they areseated.

5. Unscrew the sensors one revolution to obtain a 1 mm gap.

6. Tighten the locking nut C.


Saw sensor replacement


00029022000 4.5


Saw sensor replacement

Sensors

Adjustmentplate

Adjustment of sensors


00029022000 4.6

Adjustment and serviceinstructions, sawAdjustment of sensors

Saw barlimit screw


00029022000 4.7

1

2

3

4


Delimbing knife sharpening

The condition of the delimbing knives has a major effect on thepruning result and pruning resistance (especially in the summer).The recommended shape of the delimbing knives is shown in thefollowing diagram. Sharpen the top side of the blade to a 45°angle. Do not sharpen the bottom side.

Saw chain lubricating pump adjustment

1. Oil volume adjustment2. Lubricating pump3. Check valve4. Lock nut

NOTE! If the adjusting screw isovertightened, the pump will notfunction, because the piston willnot be able to move.

Oil volume adjustment:

Oil volume should be adjusted according to the type of oil usedand the lubricating need. Open lock nut no. 4. Turn adjustingscrew no. 1 to obtain a suitable oil flow volume. Turning thescrew clockwise will decrease the volume. Tighten the lock nut.


00004052000 5.1

Testing instructionsPulse sensor testing

1. Turn on the power by turning the switch to the ON position.

2. Switch the NPN/PNP switch to the correct position, depending on which type ofinductive sensor you are going to test. In the new harvester heads all inductivesensors are NPN type. In the older harvester heads the saw sensor is PNP type ifthe saw sensor�s diameter is 8 mm.

3. Connect the conductors as follows:- Brown conductor to +- Blue conductor to -- Black conductor to IN

NOTE! If you are going to test two sensors at the same time, connect as follows:- The brown conductors to +- The blue conductors to -- The black conductors to different IN poles.

4. Put a piece of metal in front of the sensor. If a red or yellow lamp lights on the tester,the sensor is in good condition, otherwise the sensor is faulty.

5. Turn off the power of the test device when you have finished testing the sensors.

If the BATT.OK lamp does not light when the power has been turned on, thebatteries are empty. Replace the batteries.


00004052000 5.2

WA

V V

10.0

V

A W

NOTE! The measured object hasto be without a voltage.E.g., Checking the diameter sensor:

1. Connect the wires as in the adjacent figure.

2. Slowly turn the the gear of the diametersensor and watch the display of the digitalmultimeter. The value should vary between1.5 and 11.5 kW (kilo-ohm) (±10 %)depending on the rotating direction.

By connecting black and blue wires to themultimeter, reading must be 10 kW (±10 %).Rotating of the gear wheel may not affect thereading.

Resistance measurement

Short-circuit measurement

Select the measuring unit by turning theswitch as shown in the adjacent figure.By putting both ends of the black and redmeasuring cables together you shouldhear an audible signal from the digitalmultimeter.

NOTE! The wire that you aregoing to measure has to bewithout voltage.

Testing instructionsUsing a digital multimeter

Yellow Blue


00004052000 5.3

V V

A W

24.0

V

A W

0.600V

Voltage measurement

Connect the black measuring cable to the COMterminal and the frame of the machine. Connectthe red measuring cable to the V terminal and theother end to the wire or connector you want tocheck. Then the digital multimeter will show theactual voltage at that moment at that point.

Testing instructionsUsing a digital multimeter

Diode test

When the digital multimeter is connected as shownin the adjacent figure and the switch on the digitalmultimeter is turned to the diode measuring mode,the multimeter show a value between 0.5 - 0.7.Swapping the measuring cables on the diode shouldchange the reading on the multimeter to 1.

NOTE! To check a diode, it hasto be without a voltage.

NOTE! AC/DC switch inposition DC


00029022000 6.1

Restrictors

Feed valve(fast)

Feed valve(slow)

Feed pressurerelief valve

Restrictor

Feed hydraulics


00029022000 6.2

Saw rotation hydraulics

Sawvalve

Saw motor

Casing linecheck valve

Anticavitationvalve


00029022000 6.3

Tank line

Resistorcheck valve

Saw motor hydraulicsCooling option


00029022000 6.4

F12-30

Saw rotation hydraulicsF12-30

Casing linecheck valve

Restrictor

Anticavitationvalve

Pilot -operatedvalve

Mainspindle


00029022000 6.5

Resistorcheck valve

Directional valve

Pressure reducer

T-line checkvalve

Saw cylinder

Saw feed hydraulics


00029022000 6.6

Lubrication pump

Check valve

Screen +check valve

Lubrication oil pump


00029022000 6.7

Lubricationpump

Directional valve

T-linecheck valve

Adapter block

Pressure reducer

Lubricationpump valveFrom measuring

device

Lubrication pumpOpti oil control


00020032000 6.8

H73001-H73202

Saw Feed (fast) Feed (slow) Rear knives Feed rollerspressing

Saw feed Front knives Tilting Rotator

Saw feed

Hydraulic diagram2-power, F11-19


00020032000 6.9

H73203



Saw feed



00020032000 6.10

H73203



Saw feed

Hydraulic diagram1-power, cooling, F11-19


00020032000 6.11

H73211



Saw feed



00020032000 6.12



Saw feed

Hydraulic diagramExcavator, 1-power


00004052000 7.1

Pressure adjustments

A. SAW (rotate)B. SAW (feed)C. TRUNK FEED ROLLERSD. FRONT DELIMBING KNIVESE. TILTF. ROTATORG. REAR DELIMBING KNIVEST. Tank lineP. Pressure line2. Fast feed direction valve3. Slow feed direction valve4. Rear delimbing knife pressure reducer

valve5. Rear delimbing knife pressure relief

valve6. Rear delimbing knife check valve7. Rear delimbing knife direction valve8. Tilt pressure reducer valve9. Tilt direction valve

10. Saw check valve11. Saw pressure reducer valve12. Saw direction valve13. Front delimbing knife pressure reducer

valve14. Front delimbing knife pressure relief

valve15. Front delimbing knife check valve16. Front delimbing knife direction valve17. Feed roller pressure reducer valve18. Feed roller direction valve19. Main pressure relief valve20. Rotator direction valve21. Feed roller check valve


00004052000 7.2

26

1. Disconnect the electric cable from the harvester head.

2. Start the engine and set the constant pressure:

- engage the working brake and constant rpms

- turn on the harvester head main switch

3. Have a helper press the �forward feed� button (fast feed).

4. Open the locking screw and close the pressure relief valve by

turning adjustment screw 26 clockwise (no oil flow).

5. Turn adjustment screw 26 counterclockwise. As soon as the

sound of oil flowing can be heard, turn the adjustment screw

clockwise until the sound of oil flowing stops.

6. Turn the adjustment screw 26 clockwise one full turn.

7. Lock the adjustment screw and connect the electric cable.

Pressure adjustmentsHarvester head pressure relief valve adjustment

THE PRESSURE OF THE BASE MACHINE MUST BE ADJUSTEDBEFORE THE FOLLOWING ADJUSTMENTS ARE MADE.The measurement connector is on the opposite side of the pressurereducing valve.

BE EXTREMELY CAREFUL WHEN ADJUSTING THE PRESSURE


00004052000 7.3

23

Pressure adjustmentsSaw cylinder feed pressure


2. Connect a pressure gauge to the measurement connector.




4. Open the lock and adjust the pressure reducer valve by turning

adjustment screw no. 23 to obtain 30 bar / 435 psi. (25-30 bar /

363-435 psi.).



00004052000 7.4

25


2. Connect a pressure gauge to measurement connector.

3. Start the motor and set the constant pressure:



4. Open the lock and adjust the pressure reducer valve by turning

adjustment screw no. 25 to obtain 120 bar / 1740 psi. (110-130 bar /

1595-1885 psi.).


Pressure adjustmentsFeed roller cylinder pinch pressure

NOTE! BE ESPECIALLY CAREFULNOT TO ADJUST THE PINCHPRESSURE TOO HIGH.


00004052000 7.5

24

27






4. Open the lock and adjust the pressure reducer valve by turning adjustment

screw no. 24 to obtain 120 bar / 1740 psi. (120-140 bar / 1740-2031 psi.).

5. Open the lock and turn adjustment screw 27 clockwise (no oil flow), then

turn adjustment screw 27 counterclockwise until the sound of oil flowing can

be heard. Turn the adjustment screw clockwise until the sound of oil flowing

stops. The pressure relief valve is now at 120 bar / 1740 psi. (120-140 bar /

1740-2031 psi.).

6. Adjust the pressure reducer valve by turning adjustment screw no. 24 to

obtain 50 bar / 725 psi. (50-70 bar / 725-1015 psi).


Pressure adjustmentsFront delimbing knife cylinder pressure

adjustment


00004052000 7.6

21

28







screw no. 21 to obtain 120 bar / 1740 psi. (120-140 bar / 1740-2031 psi).

5. Open the locking screw and turn adjustment screw 28 clockwise (no oil flow),

then turn adjustment screw 28 counterclockwise until the sound of oil flowing

can be heard. Turn the adjustment screw clockwise until the sound of oil

flowing stops. The pressure relief valve ís now at 120 bar / 1740 psi.

(120-140 bar / 1740-2031 psi).

6. Adjust the pressure reducer valve by turning adjustment screw no. 21 to

obtain 50 bar / 725 psi. (50-70 bar / 725-1015 psi).


Pressure adjustmentsRear delimbing knife cylinder pressure adjustment


00004052000 7.7

22

1. Disconnect the electric cable from harvester head.

2. Tilt the harvester head to a horizontal position.






screw no. 22 to obtain 120 bar / 1740 psi.


Pressure adjustmentsHarvester head tilt cylinder pressure adjustment

(tilt)


00004052000 7.8

33

34

1. Disconnect the rotator hoses and connect pressure gauges to them.

2. Tilt the harvester head to a horizontal position.




4. While your assistant activates the rotator right function, adjust the

pressure to 200 bar / 2901 psi. using adjustment screw no. 33.

5. While your assistant activates the rotator left function, adjust the pressure

to 200 bar / 2901 psi. using adjustment screw no. 34.

6. Disconnect the gauges and reconnect the rotator hoses.

Pressure adjustmentsRotator pressure relief valve adjustment

(Indexator)

ATTENTION! MAKE SURE THATYOUR HELPER IS FAMILIARWITH THE MACHINE ANDKNOWS HOW TO OPERATE IT.


00022032000 8.1

Crane

Extra equipmentsColor marking device

Shut-offcock

Electric valve

Nozzles


00022032000 8.2

Crane boom head

Electric valve

Extra equipmentsStump treatment system


SCHEDULED MAINTENANCE, NEWHARVESTER HEADS

I = Inspect or checkR = ReplaceC = Clean

VI = Visual inspectionT = TighteningA = Adjustment

G = Greasing

WHITE - END USER BLUE - PONSSE OYJRED - DEALER

N:o ItemMaintenance

interval (hours)

HARVESTER HEAD

50 200 1000

123456789

10

11

1213141516171819

202122232425

I, T I, TRotator mounting boltsHydraulic motor mountingsFeed roller mountingMeasurement roller mountingValve block mountingBearing pin tightness and lockingHydraulic leaks visual inspectionValve blocks mountingFunction of chain lubricating unitValve group main safety(relief valve)Feed roller cylinder pinch pressure(pressure reducer valve)Pressure relief valve of feed roller cylinder (H60)Pressure reducer valve of saw feedPressure relief valve of front knivesPressure reducer valve of front knivesPressure reducer valve of rear knives (H53, H73)Pressure relief valve of rear knives (H53, H73)Tilt cylinder pressure of multi-function unitAdjusment of rotator pressure relief valve(Only the Indexator rotator)Pressure of rear knive (H60)Speed of saw feedSpeed of saw low-feedSpeed of saw high-feedGreasings, according to the owner´s manual

VII, TI, TI, T

I, T I, T

VII, TI, TI, T

I, T I, TVII

I

I

II

I

I

I

I

I, TI, TI, TI, TI, TI, T

I, TVII

I

II

I

I

I

VI VI VI

I I

VI VI VIVI VI VI

VI

I I

I I

I I I

VI VI VI

Please, check that all labels are in goodcondition and in right places. If not, change them.

Notes:

Place and date:

Signature of clientSignature of service dealer

Documents

Ponsse H73