2-32. FUEL INJECTION PUMP REPAIR (Contd)
Do not handle precision ground surface of rotor to avoid
Handle all parts carefully with clean hands wet with calibrating
fluid to avoid contamination.
6. Mount governor weight support in vise and rinse rotor (1) in calibrating fluid and install in support.
. Delivery valves are available in standard and oversize. If
replacing delivery valve, check for marking OS on side of rotor.
If OS marking is present, oversize delivery valve must be used.
l Oversize delivery valves have a black marking at the base of
7. Install delivery valve (2) in rotor (1).
8. Install valve spring (3) and valve stop (4) in rotor (1).
Excessive tightening of stop plug will cause seizure of hydraulic
head and rotor.
9. Using 5/32-in. hex head driver, install stop plug (5) in rotor (1) and tighten to 85-90 lb-in. (10 Nm).