Isuzu A-4BG1 Workshop Manual page 50

3-4 ENGINE ASSEMBLY 1
' ,I I
Mark
7 V 0
important Operations
12. Injection Pump with injection Pump Gear
Use the shipping plugs (or something similar) to
seal the injection pump delivery valve ports. This
will prevent the entry of foreign material.
Flange Mounted Injection Pump Removal
1) Remove the injection pump flange bolts.
2) Pull the injection pump with the injection pump
drive gear free.
Refer to the illustration.
Coupling Mounted Injection Pump Removal
1) Remove the two coupling bolts to disconnect the
coupling.
2) Remove the injection pump mounting bolts.
3) Remove either the injection pump bracket bolts or
the injection pump fixing bolts.
Remove of the Air Compressor (if so equipped)
Before the air compressor is removed the injection
pump must be unfastened from the mounting bracket to
permit the pump to be moved freely on the mounting
bracket.
1. Remove the injection pump coupling bolts 0.
2.
Remove the injection pump mounting bolts and shift
the pump to the rear about 50 mm (2 in).
3. Remove the air compressor mounting bolts @.
4.
Pull out the compressor to the rear about 50 mm
(2
in) to pull out the air compressor crankshaft front
end spline from the injection pump drive gear.
5. After removal, visually make sure that the crankshaft
end spline
and
the female spline of the injection
pump drive gear shaft have fitting marks. Those
marks are important for reassembly.