Isuzu N-Series. Manual - part 9

POWER TAKE OFF 00-31

4. If a defect is found as a result of the inspection of

the aforementioned items 1) to 3), adjust the con-
trol cable in the dump lever portion inside the cab
according to the following procedure.
1) Set the dump lever to the “Down” position.
2) Loosen the lock nut of the control cable and ad-

just the cable as follows:

When the rise time is improper or when the dump
lever is hard to lock at “Down” time, move the inner
cable to Direction (2) of the drawing on the preced-
ing page.

When the fall time is improper or when the dump
lever is hard to lock at “Up” time or when the shaft
rotates forward at “Down” time, move the inner ca-
ble to Direction (1) of the drawing on the preceding
page.

Notice:

If the cable is adjusted on the dump lever side, be sure
to re-inspect the amount of spool extrusion.

After adjustment, tighten the lock nut at a specified
torque.

Tighten:

Lock nut to 6 N

⋅m (0.6 kg⋅m / 52 lb⋅in)

*Selector
The selector is adjusted so that the ejection direction of
the cargo deck can be selected only at dump lever
“Down”. If this adjustment is improper, the cargo deck
may slide from the truck at rise. Accordingly, because
the adjustment of the selector main unit is also needed
after the replacement, adjustment, and inspection of the
control cable, request a nearest service network (SS
store) of a body builder of the adjustment.

Legend

1. Oil pump
2. PTO
3. Direction of forward rotation
4. Direction of backward rotation
5. Shaft (drive shaft)

NPA0068E

NPA0069E

Legend

1. Push in
2. Pull out
3. Dump cable
4. Dump lever
5. Loosen

00-32 POWER TAKE OFF

OIL PUMP UNIT (REPLACEMENT)

Removal and Installation

Removal Steps

Notice:

Set the dump lever inside the cab to the “Down” position
and check the lever lock.

1. Bolt (Shift Cap)
2. Shift Cap

• Remove the bolt and remove the shift cap from

the oil pump.

Legend

1. Bolt (shift cap)

7. High-pressure hose

2. Shift cap

8. Inner rod assembly

3. Bolt (cable holder)

9. Bolt (oil pump)

4. Cable holder

10. Oil pump

5. Control cable

11. PTO

6. Low-pressure hose

NPA0070E

POWER TAKE OFF 00-33

3. Bolt (Cable Holder)
4. Cable Holder
5. Control Cable

Notice:

Before removing the control cable, be sure to refer to
Items 3 to 6 of “Removal” of the “Control Cable for Rear
Dump Truck” described previously and perform work in
accordance with the items.

6. Low-Pressure Hose

• Loosen the hose band and remove the hose

from the oil pump.

7. High-Pressure Hose

• Loosen the hose joint and remove the hose

from the oil pump.

Notice:

For the high-pressure hose, the joint may not be re-
moved in the oil pump fixed state according to the type
of the truck and equipment. In that case, slightly loosen
the joint to set the state. At the stage where the rear oil
pump is removed (Item 10), remove the high-pressure
hose rotating the oil pump.

Notice:

Because hydraulic operating fluid flows out when the
hose is removed, quickly make the hose port face up-
ward and protect the hose so that dust or foreign matter
will not be mixed in, then fix it to the frame with a wire.

Legend

1. Oil pump
2. Bolt
3. Shift cap

Legend

1. Cable holder
2. PTO
3. Bolt
4. Control cable

NPA0071E

NPA0072E

Legend

1. Low-pressure hose
2. High-pressure hose

NPA0073E

00-34 POWER TAKE OFF

8. Inner Rod Assembly

• To remove the inner rod assembly, as shown in

the drawing, press the stopper adapter side by
a wrench and insert a Phillips screwdriver
(large) in the groove of the control cable con-
nector. Then rotate it counterclockwise, loosen
it, and remove it.

Notice:

Be sure to press the stopper adapter side and loosen it
on the control cable connector side. (Press the stopper
adapter side not to rotate the spool valve. Besides, the
three-rotation dump truck is in contrast with this.)

9. Bolt (Oil Pump)

10. Oil Pump

• Remove three oil pump tightening bolts and

strike them with a plastic hammer (or a wooden
hammer) from the truck front side, then remove
the oil pump from the PTO.

• Remove the joint from the oil pump.

Notice:

If the high-pressure hose could not be removed in Item
7 described previously, remove the oil pump from the
high-pressure hose rotating the oil pump at this time.

Installation Steps

1. Oil Pump
2. Bolt (Oil Pump)

• Fully coat the oil pump shaft tip groove portion

and PTO shaft tip with lithium grease (BESCO
L-2 or equivalent).

• Install the oil pump in the joint.

Notice:

If the oil pump is rotated and removed from the high-
pressure hose when the oil pump is removed, install the
oil pump in the high-pressure hose rotating the oil pump
and slightly tighten it.

Legend

1. Left frame
2. High-pressure hose
3. Low-pressure hose
4. Wire
5. Truck front

NPA0074E

NPA0075E

Legend

1. Oil pump
2. PTO
3. Inner rod assembly

Legend

1. PTO
2. Bolt
3. Oil pump

NPA0076E