Isuzu N-Series. Service manual — part 970
7B-116 Automatic Transmission (Smoother)
• Abnormal play in the thrust direction
Assembly
1. Use an installer (5-8840-2244-0) to press fit the
counter rear bearing with a press.
2. Use an installer (5-8840-2244-0) to press fit the
counter front bearing with a press.
3. Use snap ring pliers to install the snap ring that
fixes the bearing.
• Select the thickest snap ring from among the
three types that can be installed.
Caution:
If the snap ring is deformed or damaged, replace it with
a new one and check to make sure it is installed
securely.
Thickness (mm)
Color Code
1.9
Blue
2.1
Yellow
2.3
Pink
N7A1255E
N7A1256E
Automatic Transmission (Smoother) 7B-117
Special Tools
Illustration
Tool No.
Tool Name
5-8840-2587-0
Bearing Remover
5-8840-2244-0
Bearing Installer
5884025870
5884022440
7B-118 Automatic Transmission (Smoother)
Counter Shaft (6-Speed)
Components
Disassembly
1. Use snap ring pliers to remove the snap ring that
fixes the bearing.
2. Use a bearing remover (5-8840-2587-0) to remove
the counter front bearing.
• Use a 303173 bearing remover insert and
44802 collet.
3. Use a bearing remover to remove the collar and
thrust washer with a press.
4. Use a bearing remover (5-8840-2587-0) to remove
the counter rear bearing.
• Use a 303173 bearing remover insert and
44802 collet.
Legend
1. Snap Ring
4. Counter Rear Bearing
2. Counter Front Bearing
5. Thrust Washer
3. Counter Shaft Assembly
6. Collar
N7A1257E
N7A1253E
N7A1259E
Automatic Transmission (Smoother) 7B-119
Inspect each disassembled part. Replace or repair as
required if anything is worn or damaged or if any other
defect is discovered.
5. Inspect each gear profile for damage and wear. If
any abnormality is detected, replace the applicable
gear.
6. 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
Assembly
1. Use an installer (5-8840-2244-0) to press fit the
counter rear bearing with a press.
2. Use an installer (5-8840-2244-0) to press fit the
collar and thrust washer with a press.
3. Use an installer (5-8840-2244-0) to press fit the
counter front bearing with a press.
4. Use snap ring pliers to install the snap ring that
fixes the bearing.
• Select the thickest snap ring from among the
three types that can be installed.
Caution:
If the snap ring is deformed or damaged, replace it with
a new one and check to make sure it is installed
securely.
N7A1254E
N7A1255E
Thickness (mm)
Color Code
1.9
Blue
2.1
Yellow
2.3
Pink
N7A1262E
N7A1256E
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