REPLACE/REPAIR FUEL INJECTION PUMP - Continued.
ASSEMBLE - Continued.
Torque wrench handle and adapter
handle must remain in a straight line
during tightening procedure.
Hold governor hub (120) with a spanner
wrench from DPA tool kit.
Use an adapter from DPA tool kit to tighten
drive screws (121). Holding tool handles in
a straight line, with center of adapter and
center of spanner wrench at a distance of
5.0 in. (127 mm). Tighten screws to 180 lb-
in (21 Nm).
Partially loosen drive screws (121) one turn
and repeat tightening operation three times
to ensure torque is correct.
Turn off nozzle testing unit.
Disconnect pressure port adapter.
INSTALL PISTON, SPRING, SHIM, SPRING
CAP, AND HEX HEAD CAP SCREW INTO
AUTO ADVANCE HOUSING.
Hollow end of piston must face
spring cap on housing.
Install piston (78), with hollow end of piston
facing spring cap (74) and piston bore
aligned with bore in auto advance housing
Lubricate preformed packings (76 and 73)
and flat washer (71) with clean calibrating
Be careful not to damage preformed
packing when sliding over threads.
Sharp edges of thread can cut or
Install spring (77), shims (75), preformed
packing (76), and spring cap (74). Tighten
spring cap to 250 lb-in
Install flat washer (71) and hex head cap
screw (70). Tighten cap screw to 40 lb-in
Install preformed packing (73) and plug (72)
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