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7
8. 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. 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.
29E 29A 29B 29D 29C
LP122A-3100 - Repair Instructions
9. Lubricate weep seal (36). Place, weep seal (36), and pressure ring (36A)
into the seal sleeve (35). Assemble the o-ring (35A) onto seal sleeve and
lubricate.
10. Place support ring (41) and
v-sleeves (40) into valve
casing.
6. Inspect surface of plunger pipe (29B) carefully. Remove
any chemical or mineral deposits taking care not to damage
the surface of the plunger. If plunger pipe is worn, remove
the plunger bolt (29C) , plunger pipe (29B) and spacer
(29E). Replace worn parts necessary. Note:
Always use a
new copper gasket (29) when repairing the plunger assem-
bly.
5. If there are signs of
oil leaking through
the plunger oil seals,
then replacment is
neccessary.Remove
the plunger pipe
(29B) before inspect
ing oil seals (31A &
33). Dissassemble the
gear end and push out
the seals from the
back of the pump.
29E 29A 29B 29D 29C