Isuzu N-Series. Service manual — part 839
MANUAL TRANSMISSION 7B-17
Rear Oil Seal (5MT)
Components
Removal
1. Remove the rear propeller shaft assembly.
• Refer to REAR PROPELLER SHAFT ASSEM-
BLY.
2. Remove the parking brake cable.
• Refer to PARKING BRAKE CABLE.
3. Remove the parking brake drum.
• Refer to PARKING BRAKE ASSEMBLY.
4. Remove the coupling driver and O-ring.
• Raise the lock nut caulking portion (two parts)
securely, and then remove the lock nut using
the flange holder 5-8840-2043-0.
5. Remove the parking brake assembly.
• Refer to PARKING BRAKE ASSEMBLY.
Legend
1. Oil seal
4. Coupling driver
2. Parking brake cable
5. Parking brake drum
3. Parking brake assembly
6. Rear propeller shaft assembly
N7A0293E
N7A0294E
7B-18 MANUAL TRANSMISSION
6. Remove the rear oil seal using the flat-tip screw-
driver.
Installation
1. Apply engine oil 5W-30 around a new oil seal, and
then press in the oil seal to the rear cover using the
installer 5-8840-2750-0.
• Apply Besco L2 grease on the lip of the oil seal.
Caution:
Be careful not to damage the lip of the oil seal.
2. Install the parking brake assembly.
• Refer to PARKING BRAKE ASSEMBLY.
3. Install the coupling driver.
a. Apply engine oil 5W-30 to the O-ring, and then
install the coupling driver and the O-ring.
b. Use a new lock nut and apply engine oil 5W-30
on its seat, and then fix the lock nut using the
flange holder 5-8840-2043-0.
Tighten:
Lock nut to 289 N
⋅m (29.5 kg⋅m / 213 lb⋅ft)
• After fixing it to the specified torque, align the lip
part of the nut to the V-groove of the shaft edge.
Securely caulk the two parts of the nut lip using
a chisel whose tip form is approx. 1 mm (0.04
in) radius by 60
°, to make a length (B) of 5 mm
(0.2 in) or more, and a clearance between the
bottom of the shaft and the nut lip (A) of 1.5 mm
(0.06 in) or less.
Caution:
If any crack is found on the caulking portions of the nut
after the check, replace the lock nut and caulk it again.
N7A0295E
N7A0294E
MIN
5.0mm
MIN
5.0mm
MAX
2.5mm
MAX
2.5mm
A
B
N7A0297E
MANUAL TRANSMISSION 7B-19
4. Install the parking brake drum.
• Refer to PARKING BRAKE ASSEMBLY.
5. Install the parking brake cable.
• Refer to PARKING BRAKE CABLE.
6. Install the rear propeller shaft assembly.
• Refer to REAR PROPELLER SHAFT ASSEM-
BLY.
Fixing Torque
Special Tools
N7A0298E
Illustration
Tool Number /
Description / Remarks
5-8840-2043-0 / Flange
Holder
5-8840-2750-0 / Oil Seal
Installer
5884020430
5884027500
7B-20 MANUAL TRANSMISSION
Rear Oil Seal (6MT)
Components
Removal
1. Remove the rear propeller shaft assembly.
• Refer to REAR PROPELLER SHAFT ASSEM-
BLY.
2. Remove the parking brake cable.
• Refer to PARKING BRAKE CABLE.
3. Remove the parking brake drum.
• Refer to PARKING BRAKE ASSEMBLY.
4. Remove the coupling driver and O-ring.
• Raise the caulking portion (2 parts) of the lock
nut securely, and remove it using the flange
holder 5-8840-2043-0.
5. Remove the parking brake assembly.
• Refer to PARKING BRAKE ASSEMBLY.
Legend
1. Oil seal
4. Coupling driver
2. Parking brake cable
5. Parking brake drum
3. Parking brake assembly
6. Rear propeller shaft assembly
N7A0299E
N7A0294E
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