Page 228 of 447
7F-6 REAR DIFFERENTIAL
DIFFERENTIAL UNIT
DISMOUNTING
1) Hoist vehicle and remove wheels.
2) Drain oil from rear differential. (Refer to “OIL CHANGE” in
this section.)
3) Remove brake drum and disconnect parking brake cable
from brake back plate.
4) Remove axle shafts, refer to “REAR AXLE SHAFT AND
WHEEL BEARING REMOVAL” in Section 3E.
5) Before removing propeller shaft, give match marks (1) on
joint flange and propeller shaft as shown.
6) Remove differential carrier bolts and differential assembly
with viscous coupling case.
1. Drain plug
2. Level plug
1
Page 229 of 447

REAR DIFFERENTIAL 7F-7
REMOUNTING
Reverse removal procedure for installation, noting the following.
Rear Differential
Clean mating surfaces of axle housing (1) and differential
carrier and apply sealant to housing side.
“A” : Sealant 9900-31110
Install differential carrier assembly to axle housing and
tighten carrier bolts to specified torque.
Tightening torque
Differential carrier bolts
(a) : 23 N·m (2.3 kg-m, 17.0 lb-ft)
Install propeller shaft to joint flange aligning match marks (2)
and tighten propeller shaft bolts to specified torque.
Tightening torque
Propeller shaft bolts
(b) : 23 N·m (2.3 kg-m, 17.0 lb-ft)
Rear Axle Shaft
For installation of rear axle shaft, refer to “REAR AXLE SHAFT
AND WHEEL BEARING INSTALLATION” in Section 3E.
Rear Brake Drum
For installation of rear brake drum, refer to “BRAKE DRUM
INSTALLATION” in Section 5.
Differential Gear Oil
Refill differential housing with new specified oil. Refer to “OIL
CHANGE” in this section for refill.
Brake Circuit Air Purging
Make sure to purge air out of brake circuit. Refer to “BLEEDING
BRAKES” in Section 5.
Then check to ensure that joint seam of pipe is free from oil leak.
UNIT DISASSEMBLY
Remove bolts (1) and separate viscous coupling case from differ-
ential carrier.1
Page 231 of 447

REAR DIFFERENTIAL 7F-9
7) Remove coupling case oil seal by using special tool.
Special tool
(C) : 09913-50121
INSPECTION
Check companion flange for wear of damage.
Check bearing for wear or discoloration.
Check coupling case for cracks.
Check rear differential input flange for wear damage.
ASSEMBLY
Reverse disassembly procedure for assembly, note the followings
Tighten companion flange nut to specified torque by using
special tool and caulk nut.
Tightening torque
Rear differential companion flange nut
(a) : 130 N·m (13.0 kg-m, 94.0 lb-ft)
Special tool
(A) : 09930-40113
Tighten rear differential input flange bolt (1) to specified
torque.
Tightening torque
Rear differential input flange bolts
(a) : 23 N·m (2.3 kg-m, 17.0 lb-ft)
Use new oil seal
Apply grease (12–15 g / 0.42–0.53 oz) to oil seal lip portion
and companion flange, where daubed in black as shown in
figure.
“A” : Grease 99000-25010
Apply grease (0.3–0.5 g / 0.01–0.02 oz) to oil seal dust lip
portion as shown in figure.
“B” : Grease 99000-25010
(C)
(a)
(A)
1, (a)
Page 237 of 447

REAR DIFFERENTIAL 7F-15
3) Set special tools and make drive bevel pinion dummy.
Special tool
(A) : 09922-76140
(B) : 09922-76430
4) Apply gear oil to drive bevel pinion bearing, install bearing to
bevel pinion dummy and then install bevel pinion dummy to
differential carrier.
5) Apply gear oil to drive bevel pinion bearing, install bearing to
special tool.
Then install them with another special tool to bevel pinion
dummy.
Special tool
(A) : 09922-76350
(B) : 09922-76150
(C) : 09922-76330
(D) : 09922-76430
(E) : 09922-76140
6) Tighten bevel pinion nut (special tool) (1) so that specified
bearing preload is obtained.
Pinion bearing preload (at 50 r/min)
(a) : 5.0 – 13.0 kg-cm (4.4 – 11.2 lb-in.)
7) Set dial gauge to bevel pinion mounting dummy and make 0
(zero) adjustment on surface plate.
NOTE:
This installation requires no spacer or oil seal.
(E)
(D)
(C)
(A)
(B)
NOTE:
Before taking measurement, check for rotation by hand
more than 15 revolutions.
NOTE:
When setting dial gauge to mounting dummy, tighten
screw lightly. Be careful not to overtighten it, which
will cause damage to dial gauge.
With dial gauge set, turn dummy back and forth by
hand a couple of times and attain accurate 0 (zero)
adjustment.
It is desirable that short pointer indicates beyond 2 mm
when long one is at 0 (zero).
Page 238 of 447

7F-16 REAR DIFFERENTIAL
8) Place zero-adjusted mounting dummy (1) and dial gauge set
on pinion dummy (2) and take measurement between zero
position and extended dial gauge measuring tip.
9) Obtain adjusting shim thickness by using measured value by
dial gauge in the following equation.
10) Select adjusting shim(s) (1) closest to calculated value from
among following available sizes and put it in place and then
press-fit rear bearing.
Special tool
(A) : 09913-80112
Available shim thickness
“a” : 0.30, 1.00, 1.03, 1.06, 1.09, 1.12, 1.15, 1.18, 1.21, 1.24,
1.27, and 1.30 mm (0.012, 0.039, 0.041, 0.042, 0.043, 0.044,
0.045, 0.046, 0.048, 0.049, 0.050 and 0.051 in.)
11) With new pinion spacer (3) inserted as shown, install front
bearing to differential carrier. NOTE:
Repeat turning back and forth of dummy and measure
distance as far as top surface of pinion dummy accu-
rately.
When dial gauge measuring tip extends from 0 (zero)
position, pointer turns counterclockwise.
Measured value may exceed 1 mm. Therefore, it is also
necessary to know reading of short pointer.
Necessary shim thickness = Dial gauge measured value C
1. Drive bevel pinion mounting dummy
2. Drive bevel pinion dummy
C
1
2
NOTE:
Make sure to use new spacer for reinstallation.
Apply oil to bearings.
1. Drive bevel pinion
2. Rear bearing
Page 239 of 447

REAR DIFFERENTIAL 7F-17
12) While tightening bevel pinion nut gradually with bevel pinion
holder (special tool), set preload of pinion to specification.
Pinion bearing preload
: 5.0 – 13.0 kg-cm ( 4.4 – 11.2 lb-in.)
Special tool
(A) : 09927-28010
Differential Assembly
1) Place differential gear case assembly to differential carrier,
push differential case to left side as shown in figure.
Then measure clearance “a” between side bearing and dif-
ferential carrier by using thickness gauge.
Select shims closest to measured value.
Available shim thickness
: 1.35,1.40,1.45, 1.50, 1.55, 1.60, 1.65, 1.70 and 1.75 mm
(0.0531, 0.0551, 0.0571, 0.0591, 0.0610, 0.0630, 0.0650,
0.669 and 0.0689 in.)
2) Divide selected shim(s) between both sides (right and left)
and install them to differential carrier. Then install differential
side bearing cap.
Tightening torque
Differential side bearing cap bolts
(a) : 23 N·m (2.3 kg-m, 17.0 lb-ft) NOTE:
Before taking measurement, check for smooth rotation
by hand.
Bevel pinion bearing preload is adjusted by tightening
bevel pinon nut to deform spacer.
Therefore, be sure to use a new spacer for adjustment
and tighten pinion nut step by step and check for start-
ing torque (preload) as often as tightening to prevent
over crushing of spacer.
If exceeds specification given below during adjust-
ment, replace spacer and repeat preload adjustment
procedure. Attempt to decrease starting torque (pre-
load) by loosening pinon nut will not do.
1. Torque wrench
2. Differential input hub
3. Socket with adapter
NOTE:
Align match marks (1) on cap and carrier.
Apply gear oil to bearing.
Page 242 of 447

7F-20 REAR DIFFERENTIAL
UNIT ASSEMBLY
Before installing viscous coupling case (1) to differential carrier
(2), clean mating surfaces of viscous coupling case and differen-
tial carrier, then apply sealant to differential carrier (2) by using a
nozzle as shown in figure by such amount that its section is
1.5mm (0.059 in.) in diameter.
“A” : Sealant 99000-31110
Tightening torque
Coupling case bolts (a) : 25 N·m (2.5 kg-m, 18.0 lb-ft)
TIGHTENING TORQUE SPECIFICATION
Irregular patterns: If the pattern is not oval, it means
that bevel gear is defective. High or low spots on tooth
surfaces or on the seat of bevel gear are the cause of
irregular patterns appearing on some teeth. The rem-
edy is to replace the pinion and-gear set and, if the
seat is defective, so is transfer case. TOOTH CONTACT PATTERN DIAGNOSIS AND REMEDY
Fastening partTightening torque
Nm kg-m lb-ft
Rear differential oil drain plug 55 5.5 40.0
Rear differential oil level/filler plug 50 5.0 36.5
Rear differential companion flange nut 130 13.0 94.0
Rear differential input flange bolts 23 2.3 17.0
Drive bevel gear bolts 80 8.0 58.0
Differential side bearing cap bolts 23 2.3 17.0
Coupling case bolts 25 2.5 18.0
Differential carrier bolts 23 2.3 17.0
Propeller shaft bolts 23 2.3 17.0
Page 243 of 447
REAR DIFFERENTIAL 7F-21
REQUIRED SERVICE MATERIAL
SPECIAL TOOL
MaterialRecommended SUZUKI product
(Part Number)Use
Thread lock cement THREAD LOCK CEMENT 1322
(99000-32110)Bevel gear bolts
Lithium grease SUZUKI SUPER GREASE A
(99000-25010)Oil seal lips
Sealant SUZUKI BOND NO. 1215
(99000-31110)Thread part of differential carrier bolt
Mating surface of differential housing
Mating surface of rear axle housing
Mating surface of viscous coupling case
09951-16060 09951-76010 09927-28010 09925-88210
Lower arm bush remover Bearing installer Bevel pinion holder Bearing puller attachment
09913-60910 09913-80112 09900-20701 09900-20606
Bearing puller Bearing installer Magnetic stand Dial gauge
09922-76140 09922-76150 09922-76330 09922-76430
Bevel pinion shaft Bevel pinion nut Rear collar Front collar