Isuzu N-Series. Service manual — part 963
7B-88 Automatic Transmission (Smoother)
Tightening Torques
N7A1190E
Automatic Transmission (Smoother) 7B-89
Special Tools
Illustration
Tool No.
Tool Name
5-8840-0007-0
Grip
5-8840-0027-0
Remover
5-8840-0084-0
Sliding Hammer
5-8840-2026-0
Bearing Installer
5-8840-2043-0
Flange Holder
5-8840-2244-0
Bearing Installer
5884000070
5884000270
5884000840
5884020260
5884020430
5884022440
5-8840-2750-0
Oil Seal Installer
5-8840-2752-0
Oil Seal Installer
5-8840-2755-0
Bushing Remover and
Installer
5-8840-2756-0
Oil Seal Installer
5-8840-2757-0
Bearing Remover
5-8840-2802-0
Bushing Puller
Illustration
Tool No.
Tool Name
5884027500
5884027520
5884027550
5884027560
5884027570
5884028020
7B-90 Automatic Transmission (Smoother)
Top Gear Shaft
Components
Disassembly
1. Remove the block ring from the top gear shaft.
2. Remove the needle bearing from the top gear
shaft.
• Since the needle bearing is a separator type,
take care that you do not drop it or damage it
during disassembly and assembly. During
assembly, remove all foreign matter, apply
Besco L2 grease, and then assemble it.
3. Use snap ring pliers to remove the snap ring.
4. Use a bearing remover to remove the bearing with
a press.
5. Remove the collar.
Inspect each part. Replace or repair as required if
anything is worn or damaged or if any other defect is
discovered.
6. Inspect the gear tooth surface, spline, and tip
sliding surface for damage and wear. If any
abnormality is detected, replace the applicable
part.
7. Inspect each of the bearings for the following
characteristics. If any abnormality is detected,
replace the applicable bearing.
• Smoothness of rotation
• Noise
• Damage, rust, or other visible abnormality
• Abnormal play in the thrust direction
• Discoloration, extreme wear, or pitching of the
needle bearing rolling element or rolling
surface
Legend
1. Collar
4. Top Gear Shaft
2. Snap Ring
5. Needle Bearing
3. Bearing
6. Block Ring
N7A1191E
Automatic Transmission (Smoother) 7B-91
Assembly
1. Press-fit the collar.
2. Use an installer (5-8840-2345-0) to press fit the
bearing with a press.
Press stamped surface A.
3. Use snap ring pliers to install the snap ring.
4. Install the needle bearing on the top gear shaft.
5. Install the block ring on the top gear shaft.
Legend
1. Collar
4. Bearing
2. Snap Ring
5. Stamped Surface B
3. Stamped Surface A
6. Top Gear Shaft
N7A1192E
N7A1193E
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