Isuzu N-Series. Service 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
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