Isuzu N-Series. Service manual — part 856
MANUAL TRANSMISSION 7B-85
Counter Shaft (5MT)
Components
Disassembly
1. Remove the bearing fixing snap ring using snap
ring pliers.
2. Remove the bearing; counter front using the bear-
ing remover 5-8840-2587-0.
Legend
1. Snap ring
5. Coil spring
2. Bearing; Counter front
6. Straight pin
3. Snap ring
7. Counter shaft assembly
4. Anti-lash plate
8. Bearing; Counter rear
N7A0395E
N7A1253E
7B-86 MANUAL TRANSMISSION
3. Remove the anti-lash plate fixing snap ring using
snap ring pliers.
4. Remove the anti-lash plate using the flange holder
5-8840-4056-0.
5. Remove the three coil springs from the 5th gear.
6. Remove the straight pin from the 5th gear.
7. Remove the bearing; counter rear using the bear-
ing remover 5-8840-2587-0.
If any wear, damage or other abnormality is found
on the disassembled parts, repair or replace the
parts.
8. Inspect the surface of each gear for damage or
wear. If any abnormality is found, replace the gear.
9. Inspect each bearing with respect to the following
items. If any abnormality is found, replace with a
new one.
• Smoothness of rotation
• Noise
• Abnormal external appearance, including dam-
age, rust, etc.
• Abnormal free play in thrust direction
Assembly
1. Insert the bearing counter rear with a press using
the installer 5-8840-2244-0.
2. Install the straight pin within the range of protru-
sion.
3. Assemble the three coil springs to the groove on
the side of the 5th gear, while these springs have
to touch the left side of the pin viewing from the
center of the gear.
N7A0397E
N7A1254E
N7A1255E
N7A0400E
MANUAL TRANSMISSION 7B-87
4. Set the springs between the folded protrusion of
the anti-lash plate and the straight pin. Using the
flange holder 5-8840-4056-0, align the set hole of
the anti-lash plate with the set hole of the 5th gear,
and install.
5. Install the anti-lash plate fixing snap ring using
snap ring pliers.
Caution:
Replace deformed or damaged snap rings with new
ones. Check that the parts are securely installed.
6. Install the bearing: counter front with a press using
the installer 5-8840-2244-0.
7. Install the bearing fixing snap ring using snap ring
pliers.
• Select the thickest snap ring installable from
the following three types.
Caution:
Replace deformed or damaged snap rings with new
ones. Check that the parts are securely installed.
Special Tools
N7A0401E
N7A0397E
Thickness, mm (in)
Color
1.9 (0.0748)
Blue
2.1 (0.0826)
Yellow
2.3 (0.0905)
Pink
Illustration
Tool Number /
Description / Remarks
5-8840-2587-0 / Bearing
Remover
5-8840-4056-0 / Flange
Holder
N7A1256E
5884025870
5884040560
7B-88 MANUAL TRANSMISSION
5-8840-2244-0 / Bearing
Installer
Illustration
Tool Number /
Description / Remarks
5884022440
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