Page 571 of 1413
'1.Place difterential assembly on V-blocks and install
both axles.
M€asure the backlash of both pinion gears.
Standard (New):0.05-O.15 mm (0.OO2-0.006 inl
3. It the bscklssh is not within the standard, reDlace
the differential carrier.
DIAL II{OICATOR
Differential (818B1 enginel
Backlash InspectionFinal Driven Gear Replacement
1.Remove the bolts in a crisscross Datt€rn in several
steps, and remove the final driven gear from the
differential carrier.
NOTE: The final driven gear bolts have left-hand
threads.
10 x 1.0 mm101 N.m llO.3 kgl.m, 74.5 lbf.ftlLelt-hand threads
FINAL DRIVEIII GEARChamfer on inside diameter otlinal driven gear taces carrier.
DIFFEREI{TIALCARBIER
Install the final driven gear by tightening the bolts
in a c.isscross pattern in several steps.
15-4
Page 573 of 1413
Differential (81 881 engine)
Side Clearance Adjustment
l. Install the diflerential assembly, making sure it bot-toms in the clutch housing. using the specialtoolasshown.
2. Install the 80 mm shim.
NOTE: Instsll the 80 mm shim that was removed.
mm SHIM
HOUSING
15-6
?Install the transmission housing (see section 13).
NOTE: Do not apply liquid gasket to the mating sur-,ace ot the clutch housing.
Tighten the transmission housing attaching bolts(see section 13).
8 x 1.25 mm
27 N.m 12.8 kgf'm, 20 lbf.ftl
Use the special tool to bonom the differential assem-bly in rhe clutch housing.
Measure clearance between the 80 mm shim andbearing outer race in the transmission housing.
4.
tt.
Page 575 of 1413
Differential (81 88l enginel
Oil Seal Installation
1. Install the oil seal into the t.ansmission housing us-
ing the special tools as shown
DRIVER07749-0010000
OIL SEALReplsce.
HOUSING
15-8
Install the oil seal into the clutch housing using the
soecial tools as shown.
DRIVER07749-0010000
OIL SEALReplace.
Page 576 of 1413
Differential (818C1 enginel
Special Tools ........
Differential
lllustrated Index .........
Backlash Inspection
Final Driven Gear Replacement ......
Tapered Roller Bearing Replacement.
Oil Seal Removal
Bearing Outer Race Replacement ...
Tapered Roller Bearing Preload
Adjustment
Oil Seal Installation
1 5-10
15-1 1
15-12
15-12
15-13
15-13
15-14
15-15
15-17
Page 578 of 1413
Differential (B18C1 engine)
lllustrated Index
NOTE: lf the ' mark parts were replaced, the tape.ed roller bearing preload must be adiusted (see page 15-1 5).
OIL SEAL Replace.Removal, page 15-13Installation, page 15-17
'THRUST SHIMT. 2.5 mm lO.O98 inl
TAPERED ROLLER BEARINGInspect for wear and oporation.Replacement, page '15- 13
*BEARING OUTER RACEInspect tor wear and damage.Replacement. page 15-14
}DIFFERNTIAL CARRIERInspection, page 15-12
10 x 1.0 mm101 N.m 11O.3 kgt.m,74.5 lbt.ft)Left-hand threads
.TAPERED ROLLER BEARINGInspect for wear and operation.Replacement, page 'l5- 13FINAL DRIVEN GEARInspect lor wear and damage.Replacement, page 15- 12
T. 2.0 mm (0.079 inl
*79.5 mm SHIMSelection, page 15-16
OIL SEAL Replace.Removal, page'l5-13Installation, page 15-1 7
Page 579 of 1413
Differential (818C1 enginel
Backlash Inspection
Place ditterential assembly on V-btocks and instatlboth axles.
Measure the backlash of both pinion gears.
Standard (Now): 0.o5-o.15 mm {0.oo2-0.O06 in)
lf the backlash is not within the standard, reDlacethe differential carrier,
Final Driven Gear Replacement
1. Romove the bolts in a crisscross Dattern in several
steps, and remove the tinal driven gear f.om thedifferential carrier.
NOTE: The tinal driven gear bolts have lett-hand
threads.
10 x 1.O mm101 N.m (10.3 kgt.m, 74.5 lbf.ftlLeft-hand threads.
FII{AL DN|VEN GEARChamfer on inside diameterof linal driven g€ar taces carrier.
DIFFERETTTIALCABRIER
Install the final driven gear by tightening the bolts
in a crisscross pattern in several steps.
15-12
Page 583 of 1413

Differential (B18C1 enginel
Tapered Roller Bearing Preload Adjustment (cont'dl
7. It the tapered roller bearing preload is not within the
standard, select the 79.5 mm shim lrom the follow-
ing table which will give the tapered roller bea.ing
preload closest to the standard mean value of 2.50
N.m (25.5 kgJ.cm, 22 lbf.in).
NOTE: Changing the 79.5 mm shim to the next size
will increase or decrease tapered roller bearing
preload about O.3-O.4 N.m (3-4 kgf.cm,
2.6 - 3.5 lbt.in).
79.5 mm SHIM
Part NumbelThickness
41460-PY4-0000.66 mm (0.0260 in)
AB41461-PY4-0001.17 mm (O.0461In,
AC41462-PY4-0001 .2O mm (0.0472 in)
AD41463-PY4-0001.23 mm (O.O484 in)
AE41464-PY4-0001.26 mm (0.0496 in)
AF41465-PY4-OOO1.29 mm (O.O5O8 in)
AG41466-PY4-OOO1.32 mm (O.O52O in)
AH41 467-PY4-0001.35 mm {O.O531 in)
AI41468-PY4-0001.38 mm (O.O543 in)
AJ41469-PY4-0001 .41 mm (O.0555 in)
AK41470-PY4-OOO1 .44 mm (0.0567 in)
AL41 47 1 -PY 4-OOO1 .47 mm (0.0579 in)
AM41 47 2-PY 4-OOO1.50 mm {O.O591 in)
AN41473-PY4-0001 .53 mm (0.0602 in)
AO41 47 4-PY 4-OOO1.56 mm (0.0614 in)
AP41475-PY4-OOO'l .59 mm (O.0626 in)
AO4'1476-PY4-O001.62 mm (0.0638 in)
AR41 47 7 -PY 4-OOO1 .65 mm (0.0650 in)
AS41478-PY4-0001 .68 mm {0.0661 in)
41479-PY4-OOO1.71 mm (O.0673 in)
AU41480-PY4-OOO1.74 mm (0.0685 in)
41481-PY4-OOO1 .77 mm {0.0697 in}
41442-PY4-OOO1.80 mm (O.O7O9 in)
AX41483-PY4-OOO1.83 mm (0.0720 inl
15-16
9.
Recheck the tapered roller bearing preload.
How to select the correct 79.5 mm shim:- 1) Compare the tapered roller bearing preload you
get with the 79.5 mm shim that was removed
with the specified mean preload of 2.50 N.m(25.5 kgf .cm. 22 lbf.inl.-2) lf your measured tapered roller bearing preload
is less than specified, subtract your's from the
soecified.
lf your's is more than specified, subtract the
specified from your measurement.
For example with a 1 .38 mm (O.O543 in) shim:
@ specified 2.50 N.m (25.5 kgf.cm, 22 lbf.in)- you measure 0.54 N.m (5.5 kgt.cm, 5lbt'in)
2.0 N.m {20 kgf.cm, 18lbt.in} less
@you measure 3.29 N.m {33.5 kgl.cm, 29 lbl.in)- specified 2.50 N.m {25.5 kgf.cm, 22 lbf.in)
0.8 N.m (8 kgf.cm, 7lbt.in) more
3) Each shim size uD or down from standard
makes about O.3-O.4 N.m (3-4 kgf.cm,
2.6-3.5 lbf.in) difJerence in tapered roller
bearing preload.
a In example @, your measured tapered roller
bearing preload was 2.O N.m (20 kgf'cm,
I 8 lbl.in) less than standard so you need a
79.5 mm shim five sizes thicker thsn stan-
dard {trv the 1.53 mm (0.0602 inl shim and
recheck).
a In example @ your's was O.8 N.m (8
kgf.cm, 7 lbJ.in) more than standard, so
you need a thrust shim two sizes thinner (try
the 1.32 mm (0.0520 in) shim and recheck).
After adjusting the tapered .oller bearing preload, as-
semble the transmission, and installthe transmission
housing {see section 13).
8 x 1.25 mm
27 N.m 12.8 kgt.m. 20 lbf.ttl
Rotate the diJJerential assemblv in both directions
to seat the tapered roller bearings.
10.
11.
Page 611 of 1413
System Description
Fluid Flow Diagram
The system is a compact rotary-valvs-type power stssring, connocted to the st€oring gearbox. Th6 fluid pressure is pro-vided by a vane-type pump which is driven by the engine crank pulley. The amount of fluid and pressurs is regulsted bythe flow control valve built into ths pump, The fluid prssaurs from th6 pump is dolivsred to tho valve unit sround the pin-ion of the steering g€arbox. The vslv€ inside the valvs unit controls the hydraulic prossur€ End changos the direction otthe flow. The fluid then flows to the power cylinder, where rack thrust is gen6rat6d. Fluid returning from th6 powsr cylin-der flows back to the .eservoir, where the fluid is 'filtered" and supplied to the pump Egain.
17-4