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9
11. If previously disassembled thoroughly clean all exposed surfaces on the
spacer (29E) and all exposed threads on the plunger bolt (29C) and the steel
plunger base (25). Threads MUST be free of old loc-tite and any other
material such as oil, grease, etc. This is necessary to ensure proper curing
of new loc-tite. Giant recommends cleaning the threads with acetone or
other suitable cleaner. Reassemble plunger assembly parts (29A, 29B, &
29E) using a new copper gasket (29D) and the cleaned plunger bolt (29C).
Slide the bolt through the center of the four (4) pieces so that the threaded
end is exposed. Apply several drops of loc-tite 243 (or equivalent)
adhesive to the threads. Thread into steel plunger base and tighten to 26
ft.-lbs. BE CERTAIN ALL PARTS ARE CENTERED WITH THE BOLT!
7. For LP122A & LP122A-4000
pumps, oil seal replacement can
be accomplished by pulling the
retainer forward out of the
crankcase. The o-ring around
the outside of the retainer
should be replaced and lubri-
cated with a light film of oil.
10. For LP122A & LP122A-4000
pumps, generously lubricate the
inside of the oil seals (31A & 33)
and o-ring (32A). Next, place the
seal retainer, complete (31) over
the steel plunger base seat firmly
into the crankcase. Replace the
flinger (30).
TO REASSEMBLE PROCEED AS FOLLOWS:
29E 29 A 29B 29D 29C
8. The back-up seal (33) can be
pried out of the back of the
retainer (32) with a small screw-
driver. To replace with new seal,
lubricate edges of new seal,
then squeeze outside edges of
seal, forcing the seal to col-
lapse into a figure 8. Tuck the
two outside edges of the figure
8 into the rear of the retainer,
making sure that the inner lip of
the seal faces the oil. The seal
may now be pressed firmly into
place.
9. The front oil seal (31A) can
now be removed by inserting a
screwdriver through the rear
of the retainer and tapping the
seal out through the front of
the retainer. Remove any ex-
cess old loc-tite from retainer.
To replace oil seal, apply a light
film of loc-tite around outside
edges of seal. Tap seal firmly
into the retainer with a wooden
dowel making certain that the
spring side of the seal is in-
stalled first and that the seal
sits squarely in the retainer.