To overhaul the pump assembly, metric wrenches and
sockets will be required. Special rebuild tools called out
throughout the text will speed repair and protect parts
from damage. See Service Tool Chart (Section 1, Page
Pump and governor repair should be performed in a
clean area free from airborne dirt. A separate injection
room is preferred. Work bench, vise and tools should be
clean. The use of trays is recommended for keeping
injection pump parts in order. The pump assembly
should be thoroughly cleaned before disassembly. Use
only clean solvent and clean filtered test oil to clean
injection pump parts.
Prepare the pump for disassembly as follows:
Drain fuel and lubricating oil from pump and
Cap or plug fuel and lube oil openings after draining.
Use clean diesel fuel or kerosene to clean exterior of
pump and governor assembly.
Clamp holding fixture KDEP 2919/A (Figure 1) in
vise. Remove two pump housing to adapter bolts.
Secure injection pump assembly to holding fixture.
Figure 1. Injection Pump Mounted in Holding Fixture
Holding Fixture KDEP 2919/A
Remove fuel supply pump mounting bolts (Figure 2).
Remove supply pump and drain lubricating oil into a
Remove fuel return valve. Hold adapter in place with
a 3/4 inch wrench while removing elbow and valve
body (Figure 3).
Figure 2. Removing Fuel Supply Pump
Fuel Supply Pump
Figure 3. Fuel Return Valve Removal
Fuel Return Valve
3/4 Inch Wrench
Printed in United States of America