FUEL INJECTOR PUMP HYDRAULIC HEAD MAINTENANCE (Cont).
Carefully hold hydraulic head assembly (10) to keep rotor (16) from falling
out. Failure to follow this caution may result in damage to rotor.
Invert hydraulic head assembly (10) and place on weight retainer (7). Install 2 retainers (14) in
hydraulic head assembly with cutout portions meeting over roll pin locating hole (1 5), Install
locating ring (12) at a 90 degree angle to split in retainers, and bottom out against hydraulic
Invert hydraulic head assembly (10) and place on connectors (13). Install 6 weights (5) in
weight retainer (7), with slots facing inward. Install thrust sleeve washer (11) and thrust sleeve
(6) into slots of weights.
Check to ensure that all weights (5) are level and collapsed against thrust sleeve (6).
Reposition any weights that are not properly positioned.
Install new hydraulic head seal (9) on hydraulic head assembly (10).
Apply grease to exterior of hydraulic head assembly (10). Apply a light film of O ring
lubricant to inside edge of fuel injector pump (2) housing.