front differential ISUZU KB P190 2007 Workshop User Guide

4C1-14 FRONT WHEEL DRIVE
FRONT AXLE DRIVE SHAFT
Front Axle Drive Shaft and Associated Parts
RTW 34CLF000401
Legend
1. Axle Case and Differential
2. Snap Ring
3. Bearing
4. Snap Ring
5. Oil Seal
6. Bracket
7. DOJ Case
8. Circlip
9. Bolt
10. Drive shaft Joint Assembly
11. Ball

12. Snap Ring
13. Ball Retainer
14. Ball Guide
15. Band
16. Bellows
17. Band
18. Band
19. Bellows
20. Band
21. UJ Shaft
22. Dust Seal



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ISUZU KB P190 2007

4C1-20 FRONT WHEEL DRIVE
DIFFERENTIAL
Disassembly
Major Components


RTW 54CLF000301
Disassembly Steps
1. Bolt
2. Differential assembly
3. Axle case
4. Bolt
â–² 5. Bearing cap
6. Diff. cage assembly
â–² 7. Side bearing outer race
â–² 8. Side bearing
â–² 9. Adjust shims
â–² 10. Flange nut
11. Flange


12. Dust cover
â–² 13. Pinion gear
â–² 14. Inner bearing
15. Adjust shim
16. Collapsible spacer
â–² 17. Inner bearing outer race
18. Oil seal
19. Outer bearing
â–² 20. Outer bearing outer race
21. Diff. carrier


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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-21



Important Operations
5. Bearing Cap
Apply a setting mark to the side bearing cap and the differential
carrier.





7. Side Bearing Outer Race
After removal, keep the right and left hand side bearing
assemblies separate to maintain inner and outer race
combinations.



8. Side Bearing
Remover : 5-8840-0013-0
Adapter : 9-8521-1743-0




9. Adjust Shims
Note the thickness and position of the shims removed.

10. Flange Nut
Pinion flange holder : 5-8840-0133-0


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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-23
Minor Components



Disassembly Steps
1. Bolt
2. Ring gear
â–² 3. Lock pin
â–² 4. Cross pin


5. Pinion gear
6. Side gear
7. Thrust washer
8. Differential cage



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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-25
Inspection and Repair
Make all necessary adjustments, repairs, and part replacements if wear, damage, or other problems are discovered
during inspection.


• Ring gear, pinion gear
• Bearing
• Side gear, pinion gear, cross pin
• Differential cage, carrier
• Thrust washer
• Oil seal


Visual Check
Inspect the following parts for wear, damage, or other
abnormal conditions.



Ring Gear Replacement
(1) The ring gear should always be replaced with the drive pinion as a set.
(2) W hen installing the ring gear, apply LOCTITE 271 o
r
equivalent to the threaded hole and bolt.
(3) Tighten the fixing bolts in a diagonal sequence as illustrated.
(4) Discard used bolts and install new ones.
Bolt Torque N⋅m (kgf ⋅m/lb ⋅ft)
108 ± 9.8 (11 ± 1/79.6 ± 7.2)




Clearance Between the Differential Pinion
and the Cross Pin
mm(in)
Standard Limit
0.05 - 0.10 (0.002 - 0.004) 0.2 (0.008)



Clearance Between the Side Gear and the
Differential Box
mm(in)
Standard Limit
0.03 - 0.10 (0.001 - 0.004) 0.15 (0.006)

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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-27
Reassembly
Minor Components



Reassembly Steps
1. Differential cage
2. Thrust washer
3. Side gear
â–² 4. Pinion gear


â–²
5. Cross pin
â–² 6. Lock pin
â–² 7. Ring gear
â–² 8. Bolt




Important Operations
4. Pinion Gear
Install the pinion gear by engaging it with the side gears while
turning both pinion gears simultaneously in the same direction.


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ISUZU KB P190 2007

4C1-28 FRONT WHEEL DRIVE


5. Cross Pin
(1) Be sure to install the cross pin so that it is in alignment with the lock pin hole in the differential cage.



(2) Adjust the backlash between the side gear and the pinion
gear. mm(in)
Backlash 0.10 - 0.20 (0.004 - 0.008)
Thickness of thrust washers available
mm(in)
1.00, 1.05, 1.10 (0.039, 0.041, 0.043)



6. Lock Pin
After lock pin installation, stake the cage to prevent discharge
of the lock pin.


7. Ring Gear
W hen installing the ring gear, apply LOCTITE 271 or
equivalent to the threaded hole and bolt.






8. Bolt
Tighten the bolts in diagonal sequence as illustrated.
Bolt Torque N⋅m (kgf ⋅m/lb ⋅ft)
108 (11.0/80)
Note :
Discard used bolts and install new ones.
Note that all bolts have a left hand thread.


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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-29
Major Components


RTW 54CLF000201

Reassembly Steps
1. Diff. carrier
â–² 2. Outer bearing outer race
â–² 3. Inner bearing outer race
â–² 4. Adjust shim
â–² 5. Inner bearing
â–² 6. Collapsible spacer
7. Pinion gear
8. Outer bearing
â–² 9. Oil seal
10. Dust cover


11. Flange
â–² 12. Flange nut
â–² 13. Adjust shim
â–² 14. Side bearing
15. Bearing outer race
16. Diff. cage assembly
â–² 17. Bearing cap
â–² 18. Bolt
19. Axle case
â–² 20. Differential assembly
21. Bolt



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ISUZU KB P190 2007

FRONT WHEEL DRIVE 4C1-33
(7) Select the shim using the chart;

mm(in)
Pinion
marking
+10 +8 +6 +4 +2 0 -2 -4 -6 -8 -10 Dial indicator
reading (inches)
0.081 2.18 (0.0858)0.082 2.18 (0.0858) 2.20 (0.0866)0.083 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882)0.084 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890)0.085 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898)0.086 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913)0.087 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921)0.088 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929)0.089 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937 )0.090 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953)0.091 2.18 (0.0858) 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961)0.092 2.20 (0.0866) 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969)0.093 2.24 (0.0882) 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976)0.094 2.26 (0.0890) 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992)0.095 2.28 (0.0898) 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000)0.096 2.32 (0.0913) 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008)0.097 2.34 (0.0921) 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.098 2.36 (0.0929) 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.099 2.38 (0.0937) 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0 2.42 (0.0953) 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.001 2.44 (0.0961) 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.002 2.46 (0.0969) 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.003 2.48 (0.0976) 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.004 2.52 (0.0992) 2.54 (0.1000) 2.56 (0.1008) 0.005 2.54 (0.1000) 2.56 (0.1008) 0.006 2.56 (0.1008)
Note :
When ordering shims, find the part number in the Parts Catalog by using the thickness of the shims listed
in the above table.








5. Inner Bearing
Place the shim on the drive pinion, with the chamfered side
turned towards the pinion head then install the inner bearing on
to the pinion using an installer and a press.
Installer : 9-8522-1165-0
Note:
Do not apply pressure to the roller cage.
Apply pressure only to the inner race.



6. Collapsible Spacer
Discard the used collapsible spacer and install a new one.








9. Oil Seal
Use oil seal installer to install a new oil seal that has been
soaked in rear axle lubricant.
Installer : 9-8522-1275-0
Note :
Take care not to use a rear differential oil seal instead of
the front differential oil seal.


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ISUZU KB P190 2007

4C1-34 FRONT WHEEL DRIVE







12. Flange Nut and Washer

(1) Apply lubricant to the pinion threads.
(2) Tighten the nut to the specified torque using the pinion flange holder.
Pinion flange holder : 5-8840-0133-0
Torque N ⋅m (kgf ⋅m/lb ⋅ft
)
177 - 275 (18 - 28/130 - 202)
Discard used flange nut and install new one.






(3) Pinion bearing preload
(a) Measure the bearing preload by using a torque meter. Note the scale reading required to rotate the flange.
(b) continue tightening until the specified starting torque is obtained.
Starting Torque N⋅m (kgf ⋅m/lb ⋅in
)
0.63 - 1.13 (0.06 – 0.12/5 - 10)


13. Adjust Shim
(1)
Attach the side bearing to the differential assembly without
shims. Support the opposite side using a pilot to prevent
bearing damage.

1 Installer : 9-8522-1164-0
2 Drive handle : 5-8840-0007-0
3 Pilot : 9-8521-1743-0




(2) Insert the differential cage assembly with bearing oute
r
races into the side bearing bores of the carrier.



(3) Using two sets of feeler gauges, insert a feeler stock o
f
sufficient thickness between each bearing outer race and
the carrier to remove all end plat. Make certain the feele
r
stock is pushed to the bottom of the bearing bores.
Mount the dial indicator on the carrier so that the indicato
r
stem is at right angles to a tooth on the ring gear.
Dial indicator : 5-8840-0126-0


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ISUZU KB P190 2007