FUEL INJECTION PUMP REPAIR - CONTINUED
Solvent cleaning compound MIL-PRF-680 Type III is an environmentally compliant and low toxic
material. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in
well-ventilated areas. Keep away from open flames and other sources of ignition.
Particles blown by compressed air are hazardous. DO NOT exceed 15 psi (103 kPa) nozzle pressure
when drying parts with compressed air. Use a maximum of 30 psi (207 kPa) when cleaning compo-
nents. DO NOT direct compressed air against human skin. Failure to follow this warning may cause
serious injury or death. Make sure air stream is directed away from user and other personnel in the area.
To prevent injury, user must wear protective goggles or face shield.
Remove all seal and preformed packing material from mounting surfaces.
Clean all parts with solvent cleaning compound.
Dry all parts with compressed air.
Exercise care when inspecting and handling injection pump parts. Do not nick or scratch any parts. All parts
put into containers before inspection must be returned to containers after inspection. Failure to follow this
procedure could result in damage to equipment.
Steps 1 through 4 are the procedures for inspecting the injection pump parts being kept in containers. Com-
plete the steps for all parts in each container before inspecting any other parts.
Inspect and test six springs. Replace if cracked, broken, distorted or permanently set. Using spring tester, apply test
force of 11.9-13.1 lb (5.4-6.0 kg). Length under test force is .375 in. (9.53 mm). Free length after test is 0.513 in. (13
mm). Replace if lengths differ.
Inspect six lifter springs. Replace if cracked, broken, distorted or permanently set. Using spring tester, apply test force of
69.4-76.6 lb (31.5-34.7 kg). Length under test force is 1.152 in. (29.26 mm). Free length after test is 1.891 in. (4.8 cm).
Replace if lengths differ.