Isuzu N-Series. Manual — part 951
7B-40 Automatic Transmission (Smoother)
Special Tools
Illustration
Tool No.
Tool Name
5-8840-0007-0
Grip
9-8522-1269-0
Oil Seal Installer
5884000070
9852212690
Automatic Transmission (Smoother) 7B-41
Rear Oil Seal (5-Speed)
Components
Removal
1. Remove the rear propeller shaft assembly.
• Refer to “Rear Drive Propeller Shaft”.
2. Remove the parking brake cable.
• Refer to “Parking Brake”.
3. Remove the parking brake drum.
• Refer to “Parking Brake”.
4. Remove the coupling driver and O-ring.
• Carefully release the caulking (two points) of
the lock unit, and remove the lock nut by fixing
it with the flange holder (5-8840-2043-0).
5. Remove the 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-42 Automatic Transmission (Smoother)
• Refer to “Parking Brake”.
6. Remove the rear oil seal.
Installation
1. Apply engine oil to the outer circumference of a
new oil seal, and then use the installer (5-8840-
2750-0) to press-fit the oil seal to the rear cover.
• Apply Besco L2 grease to the lip of the oil seal.
Caution:
Take care to avoid damaging the oil seal lip.
2. Install the parking brake assembly.
• Refer to “Parking Brake.”
3. Install the coupling driver.
a. Apply engine oil to the O-ring, and then install
the coupling driver and O-ring.
b. Using a new lock nut, use the flange holder (5-
8840-2043-0) to tighten the lock nut.
Tighten:
289 N
⋅m (29.5 kg⋅m / 213.2 lb⋅ft)
• After tightening the nut to the specified torque,
align the nut lip with the V-groove of the shaft
tip and caulk it (2 points) securely using a chisel
(chisel tip shape: approx. 1 mm in radius
× 60
degrees) so that the caulking is more than 5
mm in length and the lip gap is less than 2.5
mm.
Caution:
After caulking, check the caulking of the nut. If any
cracks are discovered, replace the lock nut and re-caulk.
N7A0295E
N7A0294E
N7A1072E
Automatic Transmission (Smoother) 7B-43
4. Install the parking brake drum.
• Refer to “Parking Brake”.
5. Install the parking brake cable.
• Refer to “Parking Brake”.
6. Install the rear propeller shaft assembly.
• Refer to “Rear Drive Propeller Shaft”.
Tightening Torques
N7A0298E
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