2004 ISUZU TF SERIES Workshop Manual

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Page 169 of 4264

ISUZU TF SERIES 2004 Workshop Manual REAR AXLE 4B-5

Differential
Nm (kgfm/lbft)
RTW34BLF000201

Page 170 of 4264

Page 171 of 4264

ISUZU TF SERIES 2004 Workshop Manual REAR AXLE 4B-7

REAR AXLE ASSEMBLY
General Description
A03R300001

The rear axle assembly is of the semi–floating type in
which the vehicle weight is carried on the axle
housing .
The cen

REAR AXLE 4B-7

REAR AXLE ASSEMBLY
General Description
A03R300001

The rear axle assembly is of the semi–floating type in
which the vehicle weight is carried on the axle
housing .
The center line of the pinion gear is below the center
line of the ring gear (hypoid drive).
All parts necessary to transmit power from the
propeller shaft to the rear wheels are enclosed in a
banjo type axle housing.
The 220 mm (8.6 in) ring gear rear axle uses a
conventional ring and pinion gear set to transmit the
driving force of the engine to the rear wheels. This
gear set transfers this driving force at a 90 degree
angle from the propeller shaft to the drive shafts.
The axle shafts are supported at the wheel end of the
shaft by a double tapered roller bearing.
The pinion gear is supported by two tapered roller
bearings. The pinion depth is set by a shim pack
located between the gear end of the pinion and the
roller bearing that is pressed onto the pinion. The
pinion bearing preload is set by crushing a collapsible
spacer between the bearings in the axle housing.
The ring gear is bolted onto the differential cage with
12 bolts.
The differential cage is supported in the axle housing
by two tapered roller bearings. The differential and ring
gear are located in relationship to the pinion by using
selective shims and spacers between the bearing and
the differential cage. To move the ring gear, shims are
deleted from one side and an equal amount are added
to the other side. These shims are also used to
preload the bearings which are pressed onto the
differential cage. Two bearing caps are used to hold
the differential into the rear axle housing.
The differential is used to allow the wheels to turn at
different rates of speed while the rear axle continues
to transmit the driving force. This prevents tire
scuffing when going around corners and prevents
premature wear on internal axle parts.
The rear axle is sealed with a pinion seal, a seal at
each axle shaft end, and by a liquid gasket between
the differential carrier and the axle housing

Page 172 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4B-8 REAR AXLE

SERVICING
Rear Axle Oil Replacement
Oil Capacity liters (US/UK gal.)
2.4 (0.63/0.53)

Specified gear oil GL5 (API grade)(STD)
GL5LSD (LSD)

Filler Plug and Drain Plug Torque

Page 173 of 4264

ISUZU TF SERIES 2004 Workshop Manual REAR AXLE 4B-9

REAR AXLE
1.
Refer to Section 3E "WHEEL and TIRE" for road
wheel Disassembly procedure.
2.
Refer to Section 5 "BRAKE" for rear brake
removal procedure.

RTW34BLF000401

Page 174 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4B-10 REAR AXLE

Disassembly

Raise vehicle to the working level.

Support the axle assembly with the proper jack
and chassis stands.

Remove wheel and tire.

Drain differential oil.

Page 175 of 4264

ISUZU TF SERIES 2004 Workshop Manual REAR AXLE 4B-11

305R30000
Legend

1.
Tension Pin

2.
Shoe Clamp Spring

3.
Return Spring

4.
Shoe Assembly with Parking Brake Lever

5.
Shoe Assembly with Adjuster Lever

6.
Spr

Page 176 of 4264

ISUZU TF SERIES 2004 Workshop Manual 4B-12 REAR AXLE

Legend

1.
Offset Box Wrench

10.
Remove wheel cylinder.
11.
Remove bearing holder fixing nuts.
12.
Take out axle shaft assembly with back plate and
set it on a bench pre

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