Isuzu N-Series. Manual — part 814
7B-26 MANUAL TRANSMISSION (MSB)
• Install the counter shaft assembly in the trans-
mission case.
• Install the snap ring to fix the counter 5th gear.
2. Reverse Idle Gear
3. Conical Spring
4. Thrust Washer
• Install the conical spring (1) and the thrust
washer (2) to the reverse idle gear.
• The conical spring is to be set up with its con-
cave face to the gear side shown in the illustra-
tion.
• The reverse idle gear should be installed with
the thrust washer side turned to the forward.
N7A0105E
N7A0106E
N7A0107E
N7A0100E
N7A0108E
MANUAL TRANSMISSION (MSB) 7B-27
5. Reverse Idle Gear Shaft
• Aligning the knock pin hole on the reverse idle
gear shaft with its hole of the transmission
case.
• Then insert the knock pin.
6. Side Cover
• Install the side cover with new gasket.
Tighten:
Side cover bolt to 18 N
⋅m (1.8 kg⋅m / 13 lb⋅ft)
7. Main Shaft Assembly
Notice:
Take care that the thrust washer of the reverse gear
does not drop off.
N7A0099E
N7A0109E
N7A0097E
N7A0096E
7B-28 MANUAL TRANSMISSION (MSB)
8. Main Shaft Rear Bearing
• Install the snap ring to the rear bearing outer
circumference.
• Install the rear bearing using the bearing install-
er.
Bearing Installer: 9-8522-1615-0
• Check to be certain the block ring on the 5th
gear side fitted properly to the inserts.
9. Top Gear Shaft Assembly
• Install the needle bearing to the top gear shaft.
• Install the top gear shaft assembly into the
transmission case.
• Check to be certain the block ring on the 4th
gear side fitted properly to the inserts.
• Press in the bearing until the snap ring of the
bearing outer circumference comes into con-
tact with the transmission case.
10. Counter Shaft Front Bearing
• Use the bearing installer to install the front
bearing.
Bearing installer: 5-8840-2244-0
• Install the counter shaft snap ring.
N7A0095E
N7A0110E
N7A0111E
N7A0112E
MANUAL TRANSMISSION (MSB) 7B-29
11. Counter Shaft Rear Bearing
• Install the snap ring to the rear bearing outer
circumference.
• Install the rear bearing using bearing installer
and install the snap ring.
Bearing Installer: 5-8840-2244-0
Notice:
With each gear set to the neutral position, check to see
if the shaft and each gear rotate smoothly.
Check to see if each block ring is free. When it gets
caught and stuck in the taper cone, use a screwdriver to
make it free.
12. 1st/2nd Shift Arm
• With the longer boss side set to the front.
13. 3rd/4th Shift Arm
• With the longer boss side set to the rear.
14. 5th/Reverse Shift arm
• With the longer boss side set to the front.
15. 5th/Reverse Shift Rod
16. 5th/Reverse Shift Block
• Turning the detent groove to the outside (de-
tent ball side), insert the shift rod from the rear
side with the detent groove side at the rear.
N7A0113E
N7A0114E
N7A0115E
N7A0116E
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