Isuzu N-Series. Manual - part 13

POWER TAKE OFF 00-47

20. Oil Seal (Output Shaft Side)
21. Rear Ball Bearing

• Pry the oil seal by a screwdriver and remove it,

then strike the rear ball bearing from the rear
side of the gear case and remove it.

Bearing installer: 5-8840-2432-0

22. O-Ring

• Remove the O-ring from the shift rod hole of the

gear case.

23. Oil Seal (Shift Rod Side)

• Remove the oil seal from the gear case.

24. Gear Case

25. Spring Pin
26. Cable Connector
27. Inner Rod
28. Spring Pin
29. Stopper Adapter

• Remove the cable connector or stopper adapt-

er from the inner rod as requested.

Inspection and Repair

Make necessary correction or parts replacement if wear
damage, or any other abnormal conditions are found
through inspection.
Gear Case

• Inspect that there is a crack, a wear, or a scratch in

each portion of the gear case and replace the gear
case if there is a remarkable wear or scratch.

Legend

1. Rear ball bearing

Legend

1. O-ring
2. O-ring groove

NPA0108E

NPA0120E

Legend

1. Rear case
2. Oil seal

NPA0110E

NPA0111E

00-48 POWER TAKE OFF

Bearings

• Inspect each bearing, and replace it if the following

defects are found.
1) The rotation is not smooth.
2) A remarkable noise is generated.
3) There is damage or rust in the inner and outer

laces.

4) There is an abnormal play in the thrust direc-

tion.

5) There is discoloration, remarkable wear, or hit-

ting on the body of rotation and surface of rota-
tion of the needle roller.

Notice:

If the ball bearing is removed, replace it by a new one.

Gears and Thrust Collar

• Inspect the tooth surface of each gear and replace

what has remarkable wear or damage. Further,
correct lightly staged wear or a rough surface with
an oil stone.

• Inspect both surfaces of the thrust collar and re-

place the thrust collar if there is a remarkable sur-
face roughness or wear.

Shafts

• Inspect the damage and wear on the external sur-

face of each shaft and the wear and damage of the
spline portion and replace them if there are remark-
able.

Shift Mechanism

• Inspect each portion of the shift mechanism and re-

place it if there is remarkable damage, deflection,
or staged wear.
1) Deflection and wear of the shift rod

Legend

1. Gear case

Legend

1. Needle bearing
2. Ball bearing

NPA0112E

Legend

1. Thrust collar
2. Idle gear
3. Output gear

Legend

1. Output shaft
2. Idle gear shaft

NPA0113E

NPA0114E

POWER TAKE OFF 00-49

2) Deformation and wear of the shift rod

Shift arm thickness
Standard: 9.0 mm (0.354 in)
Limit: 8.5 mm (0.335 in)

3) The backlash or operation between the shift

rod and gear case is not smooth.

4) Wear of the ball for a detent of the shift rod and

the fatigue of the spring

5) Wear of the lock pin sliding portion for the lock

pin and plug

6) Deflection of the inter rod and wear of the cable

connector portion

Oil Seal and O-ring

• Replace the oil seal and O-ring if there is damage,

wear, or aging in the lip portion of the oil seal and
the O-ring.

Notice:

If the PTO is disassembled, replace the oil seal and the
O-ring by new ones in principle. Further, if the oil seal
and the O-ring are removed, they cannot be reused.

Spring Pin

Notice:

Be sure to replace the spring pin by a new one.

Reassembly Steps

1. Gear Case
2. Oil Seal (Shift Rod Side)

• Coat the lip portion of the oil seal with lithium

grease (BESCO L-2 or equivalent), the periph-
ery portion of the seal with liquid gasket (LOC-
TITE 518 or equivalent).

• Install the lip portion of the oil seal in the shift

rod side (front side) of the gear case so that the
lip portion will not be damaged.

Oil seal installer: 5-8840-2433-0

Legend

1. Interlock plug
2. Spring set bolt
3. Shift rod
4. Inner rod assembly
5. Shift arm
6. Interlock pin
7. Ball
8. Spring

NPA0115E

Legend

1. O-ring
2. Oil seal

NPA0116E

NPA0117E

00-50 POWER TAKE OFF

3. O-Ring

• Thinly coat the O-ring and the O-ring groove of

the gear case with lithium grease (BESCO L-2
or equivalent) and firmly assemble them in the
groove so that there will be no damage and tor-
sion.

4. Rear Ball Bearing

• Strike and install the rear ball bearing in the

gear case from the inner side of the case.

Bearing installer: 5-8840-2432-0

5. Shift Arm

• Assemble the shift arm in the gear case.

6. Shift Rod

• Thinly coat the shift rod with lithium grease (BE-

SCO L-2 or equivalent) and insert it in the gear
case, then assemble it in the shift arm.

Notice:

Align the assembly direction of the shift arm to the align-
ment mark at disassembly.

Legend

1. Gear case
2. Oil seal

Legend

1. O-ring
2. O-ring groove

NPA0119E

NPA0120E

Legend

1. Rear ball bearing

Legend

1. Alignment mark
2. Shift arm
3. Shift rod

NPA0121E

NPA0122E