valutazioni - 6, GPA: 4 ( )

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35A 07740 O-ring 3 36 13415 V-Sleeve, Weep 3 40 07745 V-Sleeve 6 Plunger Packing Kit # 09535 (LP255) Item Part # Description Qty. 35A 07740 O-ring 3 35B 13141 O-Ring 3 36 13025 V-Sleeve weep 3 40 13027 V-Sleeve 6 Valve Assembly Kit LP122A. LP123, LP122A-4000, LP255 #09136 Item Part # Description Qty. 46A 07751 Valve Assembly, Complete 3 48A 12055 O-Ring 3 Valve Assembly Kit LP122A-3100 #09305 Item Part # Description Qty. 46. 07751-010. Valve Assembly Complet. . 48A 06577 O-Ring 3 LP122A SERIES/LP123/LP255 TORQUE SPECIFICATIONS Position Item# Description Torque Amount 10 01010/08093 Screw, Cover 125 in.-lbs. 17 07114/08095 Hex Screw, Bearing Cover 125 in.-lbs. 24A 13277 Hex Screw, Connecting Rod 250 in.-lbs. 29C 07737/07737-0100 Plunger Bolt 26 ft.-lbs. 48 07753/06504/06089 Plug, Valve 160 ft.-lbs. 49A 07158 Nut, Stud Bolt 60 ft.-lbs. LP122A Series/LP123 - Repair Instructions 44A44454847 1. With a 30mm wrench, remove the six (6) plugs (48) from the valve casing (43). Inspect the o-rings (48A) and replace if necessary. Remove the complete valve assembly (46A) by threading a 12mm bolt into the spring retainer and pulling straight out. 3.Remove the eight (8) hex nuts (49A) with a 19mm wrench. Tap the back of the manifold (43) with a rubber mallet to dislodge and slide off the studs. 5. If there are signs of oil leaking through the plunger oil seals, then replacment is neccessary.For LP122A & LP122A-4000, remove the plunger pipe (29B) before inspecting oil seals (31A & 33). For the LP123 & LP122A-3100 dissassemble the gear end and push out the seals from the back of the pump. 2. To disassemble the valve, screw the bolt into the retainer until the valve plate (45) presses the valve seat (44) out of the spring retainer. Examine all parts and replace if necessary. If the seat doesn’t come out, use a valve puller to remove. 4. Remove the seal sleeve (35) from the manifold and/or crank- case. Remove the pressure rings (39&36A), v-sleeves (40&36), support ring (41) and o-rings (35A and 35B in Lp255A only) from the manifold and seal sleeve, respectively. For LP255 only, remove support ring (37). Examine seals carefully and replace if worn. Clean all parts. 36A363535A35B3940404137(LP255 only) (LP255 only) 29E29A29B29D29C 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 assembly. oil. 7. For LP122A & LP122A-4000 pumps, oil seal replacement 8. The back-up seal (33) can be can be accomplished by pull-pried out of the back of the ing the retainer forward out of retainer (32) with a small the crankcase. The o-ring screwdriver. To replace with around the outside of the re-new seal, lubricate edges of tainer should be replaced and new seal, then squeeze out- lubricated with a light film of side edges of seal, forcing the seal to collapse 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. TO REASSEMBLE PROCEED AS FOLLOWS: 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 excess 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 installed first and that the seal sits squarely in the retainer. 29E29A29B29D29C 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). 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) adh...

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