Inspect injector body (21) threads, bushing seating surface, and fuel connector gasket
sealing surfaces for damage. Inspect rack hole, body seal ring sealing surface, clamp radius,
and dowel pin. Replace if necessary.
Check condition of jumper line sealing surfaces, copper gasket sealing surfaces, and fuel
connector (3) threads. Replace if necessary.
(a) Check injector control rack (24) for straightness, rack teeth for damage, and notch in
clevis for wear. Check rack for nicks, burrs, rust, and hardness.
(b) Notch in clevis should be 0.3125 to 0.3145 inch.
Gear and gear retainer
Inspect gear (23) and gear retainer (22) for nicks, burrs, or rust. Check gear teeth for wear.
Check bushing lapped sealing surface for scratches and bushing internal diameter for
scoring. Observe condition of dowel pin. Check for corrosion and varnish. Replace if
Check plunger (9) for corrosion or varnish, scoring, scratching or wear, and chips along
edge of helix.
Check valve and check valve cage
(a) Inspect for cracks and scratches on lapped surfaces. Also inspect for corrosion, varnish,
(b) Measure thickness of check valve (18) and check
thickness is 0.163 inch and minimum check valve
Check valve spring (16) for wear on coil ends, broken
valve cage (17). Minimum cage
thickness is 0.022 inch.
coil ends, and notches under coil
ends. Check for corrosion, nicks, and erosion on inside at armroximatety 1 1/2 coils from
end. Replace if necessary.
Check spring seat (15) surfaces for wear. Replace
(a) Inspect spring gage (14) for
cracks, corrosion or varnish, and
scratches on lapped sealing
surfaces. Inspect spring set
surface and needle valve seating
surface for wear.
(b) Measure thickness of spring cage. Minimum thickness is 0.602 inch.