Giant LP 122A service manual To Reassemble Proceed AS Follows

Page 9

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.

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.

TO REASSEMBLE PROCEED AS FOLLOWS:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

29E

29A

29B

29D

29C

 

 

 

 

 

 

 

 

10. For LP122A & LP122A-4000

11. If previously disassembled thoroughly clean all exposed surfaces on the

pumps, generously lubricate the

 

spacer (29E) and all exposed threads on the plunger bolt (29C) and the steel

inside of the oil seals (31A & 33)

 

plunger base (25). Threads MUST be free of old loc-tite and any other

and o-ring (32A). Next, place the

 

material such as oil, grease, etc. This is necessary to ensure proper curing

seal retainer, complete (31) over

 

of new loc-tite. Giant recommends cleaning the threads with acetone or

the steel plunger base seat firmly

 

other suitable cleaner. Reassemble plunger assembly parts (29A, 29B, &

into the crankcase. Replace the

 

29E) using a new copper gasket (29D) and the cleaned plunger bolt (29C).

flinger(30).

 

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!

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Contents Updated 6/00 LP122A LP122A-3100 LP122A-4000 LP123 ContentsImportant Operating Conditions Installation InstructionsSpecifications Models LP122A Series/LP123 Exploded View LP122A Series/LP123 = LP122A = LP123 = LP122-4000 = LP122A-3100 LP122A SERIES/LP123 Parts List LP122A SERIES/LP123 Pump Repair Kits LP122A SERIES/LP123 Torque SpecificationsPumpsystemmalfunction LP122A Series/LP123 Repair Instructions To Reassemble Proceed AS Follows Place support ring 41 and v-sleeves 40 into valve casing Page Giant Industries Limited Warranty