FUEL INJECTOR PUMP SERVO ADVANCE PISTON REPLACEMENT (Cont).
Tap advance screw hole plug (6) lightly, and remove advance screw hole plug and seal (7).
4. Remove plunger (17). Remove spring side plug (15) and plug seal (14). Remove seal (16)
from inside of spring side plug. Discard
Remove cam advance pin (8).
Remove piston side plug (13), plug seal
[12), and servo advance piston (11 ). Remove helical
spring (9) amd servp advamce va;ve (10) from servo advance piston. Discard piston plug seal.
Inspect helical spring for distortion, corrosion, or breakage.
Replace if distorted, corroded, or
Inspect all components for rust, nicks, scratches, and wear that appears uneven or may result
in looseness or leakage. Replace any component that is rusted, nicked, scratched, or has
excessive or unusual wear.
3 - 1 37