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PSH-OIO8 P. 1
1. Scope
This instruction explains and pull ing-outthe procedures for pushing-upKEYLESS PROPELLER.
2. Pushing-up procedure at shipyard
2.1 Working equipment and instructions (Refer to Fig. 1)
2.2 Preparations for pushing-up ( Refer to Fig.I )
(1) Clean the inner cone part
propeller shaft.
of the propeller boss and outer surface of
(2) Lift up the propeller and mount it on the propeller shaft.
At this time, align the match marks on the propeller boss end
on the propeller shaft aft end.
( Allowable deviation: ::!:5 nun on shaft surface)
to meet those
(3)Fit K Nut to the propeller shaft and screw it until its bearing face comes
into contact with the aft end of the propeller boss.
(4) Attach a thermometer to each of the propeller boss and the propeller shaft.
(5)Fit packings and connectors in the boss expansion oil port in the aft end of
i
No. Description Q'ty Remarks
1 K Nut 1
2 Hydraulic oil pump 1 (for main engine tool)3 Flexible hose 2
4 Pressure gauge 1
5 Connector 2 with packing6 Plug 2
7 Magnetic holder 2
8 Dial gauge 2
9 Thermometer 2
10 Thinner 2'""'-'3 Ii ters
11 Oil for hydraulic pump - Equal to SAE No.20
PSH-OI08 P.2
the propeller boss and the push-up oil port in the outside of the K Nut.
(6) Fill the hydraulic oil pump with the oil.
(7) Connect the two-way branch valve of the hydraulic oil pump to the push-up
oil port in the K Nut with the flexible hose as shown in Fig.1.
(8) Fit two dial gauges with magnetic holders on the propeller shaft near the
cone part boss symmetrically with each other about the center line of the
propeller shaft.
2.3 Pushing-up ( Refer to Fig. 1 and Fig.5 )
(1) Measure with thermometers the temperatures of the propeller boss and theshaft.
Verify the both temperatures are the almost same.
(2) Determine, from Fig.3, the required push-up travel (X)
temperatures of the boss and the shaft.
for the measured
(3) At first push-up the propeller in dry-fit.
In this operation, first close the valve (a), open the valve (b) only and
raise the pressure in the hydraulic oil pump to abt. 3.6 MPa (36.7 kg/Cl~)
(531kN).
At this time, set the dial gauge at zero.
( Zero setting of dial gauge)
(4) Then, raise the pressure in the hydraulicoil pump by abt.4. 9MPa (50 kg/c~)
at a time ( while plotting the relation between the push-up travel of the
-boss and the oil pressure in Fig.4) until the push-up travel of the boss
comes to about 2.0 mrn on the dial gauge. (Completion of the initial
push~up operation by dry fit. )
(5) Draw a straight line connecting the plotted points of the push-up travels
measured in (4) above.
This line corresponds to the line" A - B" shown in Fig. 5.
PSH-0108 P.3
(6) In accordance wi th the
point" C" in parallel
coefficient at dry fit.
method shown in Fig. 5, draw a straight line from
to the line" A - B" to obtain the frictional
( It is also able to use the formula on page 9coefficient in dry-fit. )
to calculate the frictional
(7) Stop the hydraulic oil pump at the point "B" and drop the hydraulicpressure to zero.
Connect one of the two-way branch valves
boss expansion oil port with the flexible
open the valve (a) to the full.
of the hydraulic oil pump to the
hose (3) as shown in Fig.1, and
(8) Then, after confirming that the valves (a) and (b) are full open, operate
the hydraulic oil pump to raise the oil pressure and push-up the propellerby wet-fi t.
In this operation,
9.0 MPa (91.8 kg/cni)first set the pressure adjustable dial on the pump
and raise the oil pressure to 9.0 MPa (91.8 kg/cni).
Then, increase pressure of the adjustable dial intermittently so that the
propeller boss moves onto the propeller shaft by abt. 1~2 llllllat a time
to the point" F" of the required push-up travel (X) .
(During the operation, record the push-up travels of the boss and the
corresponding oil pressure in the hydraulic oil pump. )
( In this time, the necessary push-up travel as per LR rule is the same with
the required push-up travel (X) by TSC standard, be careful to avoid to
push-up over for the actual push-up travel. )
(9) When the propeller boss has been pushed-up by the required push-up travel
(X) , stop the hydraulic oil pump. Then, close the valve (b) , leaving
the valve (a) open.
Then, gradually release only the boss expansion oil pressure by opening
the relife-valve of the hydraulic oil pump which has been closed.
To drain oil in the oil groove of the propeller, remove the connector in
the boss expansion oil port.
About five minutes later,
pressure returns to zero,
release the oil pressure for
( At this time, confirm that
after confirming that the boss expansion oil
close the valve (a) and open the valve (b) to
the boss push-up K Nut.
the push-up travel does not change.)
-=---=
PSH-OI08 P.4
(10) Plot the results of the push-up in the figure.
If the relation is not linear between the push-up travel and the pressure
in the hydraulic oil pump, push-up again.
The push-up operation by wet-fit is now over.
(11) Remove the dial gauges, flexible hoses, hydraulic oil pump.
(12) Fit the plug to thebossexpansionoil port in the propeller boss.
In the same way, put the plug into the oil port in the K Nut.
3. Pulling-out by means of boss expansion oil pressure
3.1 Working equipments and instruments (Refer to Fig.2 )
3.2 Pulling-out procedure for propeller on ship ( See Fig.2 )
(I) Remove the propeller cap.
(2) Support the propeller.
(3) Loosen the K Nut.
No. Description Q'ty Remarks
1 K Nut 1
2 hydraulicoil pump 1 (for main engine tool)
3 Flexible tube 1
4 Pressure gauge 1
5 Connector 1 with packing6 Plug 1
11 Oil for hydraulicpump - Equal to SAE No.2012 Wooden block 1'"""'2
-~
PSH-OI08 P.5
(4) Place a wooden block for buffer between the propeller boss and the nut.
At this time, a clearance between the wooden block and the aft end surface
of the propeller boss shall be about 20 mm.
( Corresponding to the maximum push-up travel)
(5) Remove the plug from the boss expansion oil port in the propeller boss, and
screw in the connector with a packing under it
(6) Connect a flexible tube to the connector of the boss expansion oil port and
to the hydraulic oil pump in a manner as shown in Fig. 2.
(7) Gradually raise the boss expansion oil pressure to abt. 67.2MPa (685 kg/cui)
and keep it for five minutes.
(8) If the propeller is still not pulled out, raise the boss expansion oil
pressure further to abt. 74.0MPa (755 kg/cui).
The propeller is pulled-out midway through this operation.
--=---
PStf-O108P. 6
FIG. 1 ARRANGEMENTOF WORKINGEQUIPMENTSFOR PUSHING-UPPROPELLER
5)@
PROPELLERSHAFT
u u.-uu u_~u u u u"'u_""u__u_-u_u_-"" u__u u ,<_uu_u.
PROPELLERBOSS
\2 WAY BRANCHVALVE
No. DESCRIPTION No. DESCRIPTION
1 K NUT 7 MAGNETI C HOLDER2 HYDRAULICOIL PUMP 8 DIAL GAUGE3 FLEXIBLE HOSE 9 THERMMETER4 PRESSUREGAUGE 10 THINNER5 CONNECTOR 11 0 I L (FORHYDRAULIC PUMP)6 PLUG
----
~
PSH-O108P. 7
FIG. 2 ARRANGEMENTOF WORKINGEQUIPMENTSFOR PULLING-DUT PROPELLER
PROPELLERSHAFT
un --, -. -- -- --- - -. 00_'.-nNo --- No---Moo 00--- 00.' -00,. 00-No---No--n-- --- -- - --00----- -- ----~-- --- --.--
PROPELLER BOSS
3
No. DESCRIPTION No. DESCRI PTION1 KNUT 6 PLUG2 HYDRAULIC 0 I L PUMP3 FLEXIBLE HOSE4 PRESSUREGAUGE 11 0 I L (FORHYDRAULIC PUMP)5 CONNECTOR 12 VKXJDENBLOCK
PSH-O 108
- -- -
P.8
22
8-20 -10 0 10 20 30 40 50
:;f a"" 5 i1tA'><'r;t$ffi(J);.ffii~ (ittl, \15 ~i~J~) (Oe)TEMPERATURE OF PROPELLER BOSS OR SHAFT ( USE THE LOWER ONE) (e)
jg]3. f~56Jj.;'.!:::;fa ""5*;Z *t::r;t~(J);.ffii~.!:: 0)001* (SNO.1236/1237/l239/1240)FIG.3 PUSH-UP TRAVEL Vs. TEMPERATURE OF BOSS OR SHAFT ( SNO.1236/1237/1239/1240 )
~JJW!f~56;'~~Lsll,\t::T s C~~O)?ff~f~56Jj.; (X)NECESSARYPUSH-UPTRAVELEXCLUDINGINITIALPUSH-UPONE( X) UNIT: mm
20
Ss'-'
0 18
r./)
::Jp...
'""'16...
'-' t:zmlmjrt z
§ 14.....:1
f,.! U,.. ><:::IU'1 .....:1
12
1J Sit d:jjf r./)
10'::Jp...
10iiLO) 1 iliO) ;.ffii (Oe);.ffii (Oe) 0 1 2 3 4 5 6 7 8 9
0 16.4 16.3 16.3 16.2 16.2 16.1 16.0 16.0 15.9 15.810 15.8 15.7 15.6 15.6 15.5 15.4 15.4 15.3 15.2 15.2
20 15.1 15.0 15.0 14.9 14.8 14.8 14.7 14.6 14.6 14.5
30 14.4 14.4 14.3 14.2 14.2 14.1 14.0 14.0 13.9 13.8
p
~a¥¥~JflffifE 2::O)~t~ (liT</7°hJ:t)PRESSUREAND LOAD ( ONE PUMP METHOD)237/1239/1240 )
)R DRY-FIT11 :
*** REMARKS ****** fFm ~ ***
P.9
1. FOR EXAMPLE, THE DOTTED LINE SHOWS
THE PUSH-UP PRESSURE AND THE BOSS
EXPANSION PRESSURE AT PUSH~UPTRAVEL
15.4 mm ( 20t )
S)
'-I)
)
1. *@ f:::'~T1i&:~I:;t¥l'JZ,J:f.:l:
15. 4mm (;1j~20°C) l:::.ii~tt61f!3
Jbh-irEfEJJzV5Iw~aifO);t.Aj)t*
1rJ3fE 0) * Ii) jJ :3: 17IJ~ T 6 °
X = 15.4mm - ex1
= 15.4mm - O.3mm= 15.1mm
X = 15.4mm - ex1
= 15.4mm - 0.3mm = 15.1mmLOAD(N),AND
:(MPa).2
\.(cm ) . 1002. ~fE iIDfJ 1 4 9 6 cm2 2. RAM AREA : 1496 cm2
( 1VrPa)
12 16 20 22 2414 18
11¥J6h-!i (mm)
PUSH-UP TRAVEL (mm)
......
140
,,-...
120<'Ie
u,,-...CD
'--'0100 I1000
p.,
0800
:;>;
'--'
600
rtC/1
QC/14!i7=p.,
400 ZMQ'-'t/j
l:8
:@><200 -+<
KC/1
'*
PSH-OI08 ~ 4. ¥¥i6li-SJ=XtT6¥!3i6li-tJ&LYFIGA PUSH-UP TRAVEL VS. PUSH-UP PRES
( SNO. 1236/123'
f7~71~~~~~~~~~~~.~:
~ =( K . KE/S - tan a )
APPROXIMATE FORMULAFORDRYFRICTIONAL COEFFICIENT ~ :
( K . KEIS - tan a )~ =
(l+K'KE' lanaiS)3
HERE, KE = 0.25662 (nun IN)2
S = 2581247 (mm )tan a = 0.025
K IS A RATIO OF PUSH-UP LOAD
TO PUSH-UP TRAVEL(mm),AND
LOAD(N) = PRESSURE(MPa) .2
RAM AREA(cm) .
(l+K'KE' tana IS)
:. :. -C-, KE = 0.25662(mm3IN)2
S = 2581247 (mm )tan a = 0.025
K Ij::f!i3j6li-W:m(N),!::::f!i3j6.(mm)~Jto
w:mlj:l1EEE:(MPa). 5tEEoo~(cm) . 100 0
( MPa )
10 1
fJJ~Jj~f!3J6; a 1INITIAL PUSH-UP TRAVEL a 1 = 0.3mm
I
Jw~
I
PUSH
oil
,-...
I::0
'-" ......'-"
",,0 OZ I::6 gR -R
r$jCl'.)
, ;:Jt -!:p..
,r\()....",
2200
2000
1800
1600
1400
1200
1000
8000 800
6000 600
I
I
I
II t
0
N
S(,)
ti::<
CI'.) '-"CI'.)
1000p..Z0-CI'.)
CI'.)CI'.)
llig 600
l:;.!400
"CI'.)CI'.)
.-4 gap..
lli 200b- 20:@r)}CI'.)';:J-!:p.. I
0
- --
PRACTICALDRY FIT
'"p.,:::E
~P:::;::>U)U)
~P:::p.,p.,;::>:tU);::>p.,
PARALLEL SHIFT TO FINDOUT THE FR I CT I ONAL COEF.AT PRACTI CAL DRY FIT.
START POINT PRESSURE(START POINT LOAD
531 kN)
3. 6 MPa36. 7 Kg/cm
ole
~~"<,;<J
~<t.<t.cP
~~,,° .'
G~"<t."t-,
PRACTICAL PUSH-UPRECORD LI NE
F
FRICTIONAL COEF. AT WET FIT
WET FIT L
PUSH-UP TRAVEL BY DRY FIT
ab t.2 mm
REQUI RED PUSH-UP TRAVEL (X)INITIAL PUSH-UP TRAVEL al
ZERO SETTI NG OFDIAL GAUGE
FIG 5 PROPELLER FITTING INSTRUCTIONS
PUSH-UP TRAVEL (mm)
.. ---
=f=f-'=00
..
'">-'<:)
