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