2001 SUZUKI GRAND VITARA differential

7E-12 DIFFERENTIAL (FRONT)

DIFFERENTIAL (REAR) 7F-1
7F
SECTION 7F
DIFFERENTIAL (REAR)
CONTENTS
General Description ........................................ 7F-2
Diagnosis ......................................................... 7F-2
Diagnosis Table ............................................ 7F-2
On-Vehicle Service.......................................... 7F-3
Precaution for Maintenance Service ............. 7F-4
Differential Gear Oil Change ......................... 7F-4
Rear Differential Assembly ............................ 7F-5
Dismounting .............................................. 7F-5
Remounting ............................................... 7F-5
Unit Repair ....................................................... 7F-6Disassembling Unit ....................................... 7F-6
Component Inspection .................................. 7F-9
Sub-Assembly Adjustment and Reassembly 7F-9
Differential carrier .................................... 7F-10
Differential case ...................................... 7F-10
Differential side bearing .......................... 7F-12
Drive bevel pinion.................................... 7F-13
Assembling Unit .......................................... 7F-17
Tightening Torque Specification ................. 7F-20
Required Service Material ............................ 7F-20
Special Tool ................................................... 7F-21

7F-2 DIFFERENTIAL (REAR)
General Description
The differential assembly using a hypoid bevel pinion and gear is installed to the rear axle. It is set in the conven-
tional type axle housing.
The differential assembly is decisive in that the drive power is concentrated there. Therefore, use of genuine
parts and specified torque is compulsory. Further, because of sliding tooth meshing with high pressure between
bevel pinion and gear, it is mandatory to lubricate them by hypoid gear oil.
Diagnosis
Diagnosis Table
Condition Possible Cause Correction
Gear noiseDeteriorated or water mixed lubricant Repair and replenish.
Inadequate or insufficient lubricant Repair and replenish.
Maladjusted backlash between drive bevel pin-
ion and gearAdjust as prescribed.
Improper tooth contact in the mesh between
drive bevel pinion and gearAdjust or replace.
Loose drive bevel gear securing bolts Replace or retighten.
Damaged differential gear(s) or differential pin-
ion(s)Replace.
Bearing noise(Constant noise) Deteriorated or water mixed
lubricantRepair and replenish.
(Constant noise) Inadequate or insufficient
lubricantRepair and replenish.
(Noise while coasting) Damaged bearing(s) of
drive bevel pinionReplace.
(Noise while turning) Damaged differential side
bearing(s) or axle bearing(s)Replace.
Oil leakageClogged breather plug Clean.
Worn or damaged oil seal Replace.
Excessive oil Adjust oil level.

DIFFERENTIAL (REAR) 7F-3
On-Vehicle Service
1. Universal joint flange 9. Differential carrier assembly 17. Bearing adjuster 25. Bolt
2. Hypoid gear set 10. Differential pinion 18. Lock plate 26. Bolt
3. Bevel pinion spacer
Apply thread lock cement
99000-32110 referring to
“DIFFERENTIAL CASE” in
this section.11. Differential gear 19. Pinion shaft No.2 27. Differential case screw :
Apply thread lock
cement 99000-32110 to
thread part of bolt.
4. Shim 12. Pinion shaft No.1 20. Pinion joint Do not reuse.
5. Rear bearing 13. Differential left case 21. Spring washer Tightening torque
6. Front bearing 14. Differential right case 22. Washer Apply differential oil.
7. Oil seal :
Apply grease 99000-25010
to oil seal lip.15. Thrust washer 23. Bevel gear bolt :
Apply thread lock
cement 99000-32110
to thread part of bolt.
8. Flange nut :
After tightening nut so as
rotation torque of bevel pin-
ion shaft to be in specified
value, caulk nut securely.16. Differential side bearing 24. Bolt

7F-4 DIFFERENTIAL (REAR)
Precaution for Maintenance Service
•When having driven through water, check immediately if
water has entered (if so, oil is cloudy). Water mixed oil must
be changed at once.
•Whenever vehicle is hoisted for any other service work than
oil change, also be sure to check for oil leakage and status of
breather hoses.
Differential Gear Oil Change
1) Before oil change or inspection, be sure to stop engine and
lift up vehicle horizontally.
2) Check oil level and existence of leakage. If leakage is found,
correct its cause.
3) Drain old oil and pour proper amount of gear oil as specified
(roughly up to level hole).
4) Torque drain plug (3) and level/filler plugs (2) to specification.
“A” : Sealant 99000-31110
Tightening torque
Differential oil level/filler plug (a) :
50 N·m (5.0 kg-m, 36.5 lb-ft)
Differential oil drain plug (b) :
28 N·m (2.8 kg-m, 20.5 lb-ft)
Hypoid gear oil :
API GL-5, SAE 75W-85, 80W-90 or 90
Oil capacity :
2.5 liters (5.3/4.4 US/Imp. pt.) NOTE:
Hypoid gear oil must be used for differential.
It is highly recommended to use SAE 80W-90 viscosity.
1. Breather hose

DIFFERENTIAL (REAR) 7F-5
Rear Differential Assembly
Dismounting
1) Lift up vehicle and drain oil from rear differential housing.
2) Remove rear brake drums and pull out right and left rear axle
shafts. (Refer to “REAR AXLE SHAFT REMOVAL” of Section
3E.)
3) Before removing propeller shaft, give match marks (1) on
joint flange and propeller shaft as shown.
4) Remove propeller shaft by removing its flange bolts and
nuts.
5) Remove differential assembly by removing its 8 fastening
bolts (1).
Remounting
1) Clean mating surfaces of rear axle and differential assembly
and apply sealant to axle side evenly.
“A” : Sealant 99000-31110
2) Install differential assembly to axle and fix it with bolts (1)
tightened to specified torque.
Tightening torque
Differential carrier bolts (a) :
55 N·m (5.5 kg-m, 40.0 lb-ft)

7F-6 DIFFERENTIAL (REAR)
3) Install propeller shaft to joint flange aligning match marks
and torque flange nuts to specification. Apply thread lock
cement to thread part of bolt if reused.
“A” : Cement 99000-32110
Tightening torque
Propeller shaft flange nuts (a) :
60 N·m (6.0 kg-m, 43.5 lb-ft)
4) Install right and left rear axle shafts and drums.
(Refer to “REAR AXLE INSTALLATION” of Section 3E and
rear brake drum installation of Section 5.)
5) Install wheels.
6) Fill hypoid gear oil as specified and tighten plug to specifica-
tion.
7) Lower lift.
Unit Repair
Disassembling Unit
1) Hold differential assembly securely and put identification
marks on differential side bearing caps (6).
2) Take off differential side bearing lock plates (4) and differen-
tial side bearing caps (6) by removing their bolts and then
take out bearing adjusters (5), side bearing outer races and
drive bevel gear with differential case.
3) Remove drive bevel gear (hypoid gear), differential gears,
differential pinions and pinion shafts.
a) With aluminum plates (2) placed on vise first, grip differen-
tial case with it and remove drive bevel gear (hypoid gear)
(3) by removing its bolts (1).
1. Differential carrier
2. Drive bevel gear assembly
3. Differential case
A: Identification mark
1
3
2

DIFFERENTIAL (REAR) 7F-7
b) Remove differential left case (2) from differential right case
(1).
c) Remove pinion shafts, differential gears, washers, differen-
tial pinions, spring washers, thrust washers.
4) Using special tools, pull out differential side bearings (1).
Special tool
(C) : 09913-85230
(D) : 09913-61510
5) Remove drive bevel pinion (hypoid gear) assembly.
a) Hold universal joint flange with special tool and then
remove flange nut by using power wrench (4 - 10 magnifica-
tion) (2).
Special tool
(E) : 09922-66021
2
1
1. Socket wrench