Service manual

FUEL INJECTION PUMP
REMOVING THE INJECTION PUMP
NOTE: Do not disassemble the injection pump unless
absolutely necessary. Injection pump service should be per-
formed by a qualified technician
in an extremely clean envi-
ronment.
1. Disconnect the fuel injection pipes.
2. Remove the tie-rod clip cover.
3. Remove the tie-rod clip and the tie-rod.
Disassembly
1. Remove the stopper plate.
2.
Unscrew the delivery holder. Take out the delivery valve
and valve spring.
3. Remove the tappet roller and stopper pin.
4. Remove the tappet, plunger spring, etc.
NOTE: When replacing the plunger barrel, delivery valve,
etc., do not loosen the adjusting screw and plate for each
cylinder. When those parts have been replaced, it
is neces-
sary
to measure fuel injection quantity by utilizing a pump
tester and cam box.
All pans that are removed from the pump
should
be kept classified by cylinders and immersed in clean
fuel.
Check the Control
Rack movement. It
should be smooth
(no catching).
/NJECTIIJII PUMP i
(Three Cylinder shown)
27
DELIVERY VALVE--
HOLDER
VALVE SEAT
PLUNGER BARREL
PLUNGER----
TAPPET
ROLLER
Injection Pump Assembly
-----Check Spring
tor fatigue.
INSPECTION OF
PUMP ASSEMBLY
Scratches, rust,
seizure.
__.....--Inspect tor wear
...,....- and interference.
1. Insert the plunger barrel into the housing.
2. Install the delivery valve and valve spring. Temporarily
tighten the holder.
3. Insert the control rack.
4. Insert the control pinion. Align the matchmark on the
rack with that on the pinion.
5. Install the spring upper seat.
6. Insert the plunger spring.
7. Fit the lower seat to the plunger. Insert the plunger into
the barrel side.
8. Depress the tappet roller assembly and install the stopper
pin.
9. Tighten the delivery holder.
Delivery holder tightening Torque: 25.3- 28.2 ft-lb (3.5- 3.9 kg-m).