Isuzu N-Series. Manual - part 810

7B-10 MANUAL TRANSMISSION (MSB)

• Disconnect the propeller shaft at flange yoke.
• Put aside the propeller shaft and tie it to the

frame so that it does not interfere with servicing
work.

2. Parking Brake Cable

• Move the joint cover.
• Disconnect the joint bolt.
• Remove the clip, and then disconnect the cable

from the bracket.

3. Wiring Connector

• Disconnect the wiring connectors from the ve-

hicle speed sensor, the neutral switch and the
back-up light switch.

4. Shift Cable and Select Cable

• Disconnect the shift cable and select cable on

the transmission side.

5. Clutch Slave Cylinder

• Remove the clutch pipe fixing clips and the clip

bracket (Right hand drive models only).

N7A0044E

N7A0051E

Legend

1. Snap pin
2. Shift cable
3. Clip
4. Select cable

N7A0052E

N7A0053E

MANUAL TRANSMISSION (MSB) 7B-11

• Remove the slave cylinder assembly with the

flexible hose attached, and then tie it to the
frame so that it does not interfere with servicing
work.

6. Exhaust Brake Assembly
7. Front Exhaust Pipe

8. Transmission Assembly

Notice:
The exhaust pipe bracket, the gear control bracket and
the clips are sometimes installed in the wrong position or
direction confusedly. To prevent incorrect installation of
these parts, put a correct installation mark on them.

• Support the transmission with mission jack.

Caution:
To prevent the falling of the transmission, tie it firmly to
the jack with a chain or belt.
Do not allow transmission to hang unsupported from
clutch. Damage to the clutch assembly will result.

• Remove the nuts of the transmission mounting

bracket on the crossmember side.

• Engine and transmission angles may need to

be adjusted for removal.

• Hold the rear section of the engine by the jack

or hoist.

Legend

1. Flexible hose
2. Shift cable

N7A0054E

N7A0055E

N7A0056E

N7A0057E

7B-12 MANUAL TRANSMISSION (MSB)

Caution:
When lifting the engine by the jack, use wood blocks to
prevent any possible damage to the oil pan.

• Remove transmission fastening bolts.
• Pull out the transmission assembly rearward.

9. Mounting Bracket

Installation

1. Mounting Bracket

Tighten:
Mounting bracket nuts to 69 N

⋅m (7.0 kg⋅m / 51 lb⋅ft)

2. Transmission Assembly

• Support the transmission with mission jack.

Caution:
To prevent the falling of the transmission, tie it securely
to the jack with a chain or belt.

• Shift transmission into high gear.
• Align transmission with engine slope.
• Turn output parking brake drum to aid clutch

spline engagement.

Tighten:
Clutch housing to flywheel housing bolts to

• M10: 46 N

⋅m (4.7 kg⋅m / 34 lb⋅ft)

• M12: 91 N

⋅m (9.3 kg⋅m / 67 lb⋅ft)

• Raise engine and transmission up into rear

transmission mount.

Tighten:
Engine rear mounting nuts and bolts to

• M10: 40 N

⋅m (4.1 kg⋅m / 30 lb⋅ft)

• M12: 69 N

⋅m (7.0 kg⋅m / 51 lb⋅ft)

3. Front Exhaust Pipe

Tighten:
Front exhaust pipe bolts to 37 N

⋅m (3.8 kg⋅m / 27 lb⋅ft)

4. Exhaust Brake Assembly

Tighten:
Exhaust brake bolts to 17 N

⋅m (1.8 kg⋅m / 12 lb⋅ft)

5. Clutch Slave Cylinder

Tighten:
Slave cylinder bolts to 19 N

⋅m (1.9 kg⋅m / 14 lb⋅ft)

• Perform slave cylinder adjustment before in-

stallation of the return spring.

1) Loosen the lock nut of the push rod.
2) Turn the adjust nut until it reaches the shift fork.
3) Back off the adjust nut 1.5 turns. (shift fork free

play Approximately 2 mm/0.1 in).

4) Tighten the lock nut.

Tighten:
Push rod lock nut to 16 N

⋅m (1.6 kg⋅m / 12 lb⋅ft)

6. Shift Cable and Select Cable
7. Wiring Connector

• Color of Connector

Back-up Light Switch: Brown
Neutral Switch: Gray

8. Parking Brake Cable
9. Propeller Shaft

• Line up reference mark.

N7A0057E

N7A0058E

MANUAL TRANSMISSION (MSB) 7B-13

Tighten:
Propeller shaft nuts to 66 N

⋅m (6.7 kg⋅m / 48 lb⋅ft)

Front Oil Seal Replacement

Removal

1. Transmission Assembly

Refer to “ON-VEHICLE SERVICE: TRANSMIS-
SION ASSEMBLY REPLACEMENT” previously in
this section.

2. Clutch Housing
3. Oil Seal

• Use the screwdriver to remove the oil seal from

the clutch housing.

Caution:
Take care not to damage the sealing seat of the clutch
housing.

Installation

1. Oil Seal

• Apply engine oil to the new oil seal outer cir-

cumference and apply multi-purpose grease to
the oil seal lip.

• Use the oil seal installer to install the oil seal to

the clutch housing.
Oil Seal Installer: 5-8840-2064-0

2. Clutch Housing

• Remove water and oil on the mating face be-

fore applying the liquid gasket.

• Apply 

φ2 mm (0.1 in) bead of the liquid gasket

(Three Bond 1215 or equivalent) to the clutch
housing surface shown in the illustration.

Notice:
Install the clutch housing on the transmission case with-
in 30 minutes after liquid gasket application.

Tighten:
Clutch housing to transmission case bolts to 81 N

⋅m (8.3

kg

⋅m / 60 lb⋅ft)

3. Transmission Assembly

Refer to “ON-VEHICLE SERVICE: TRANSMIS-
SION ASSEMBLY REPLACEMENT” previously in
this section.

N7A0059E

N7A0060E

N7A0061E