Giant GP7122 installation instructions To Assemble Valve Casing, To Disassemble Gear END

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GP7122 REPAIR INSTRUCTIONS

TO ASSEMBLE VALVE CASING

18.Check O-rings (39A) and support rings (39B) on seal case (39). Clean surfaces of seal sleeves (38) in crankcase

(1) and sealing surfaces of valve casing (50). Insert seal sleeve with plunger into crankcase guide. Turn crank- shaft to (22) until plunger with crosshead (25) pushes against plunger tighten plunger (36) to 26 ft-lbs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

39A

39B

39

39B

39A

 

 

 

 

 

 

 

 

 

 

19.Push valve casing carefully over O-rings of seal case and centering studs (50A). Tighten nuts (49A) to space 103 ft-lbs.

TO DISASSEMBLE GEAR END

20.Take out plunger (36) and seal sleeves (38) as described above. Drain oil.

21.After removing the circlip ring (33B), pry out seal adapter (33) with a screw driver

22.Check seals (32,32A,33A) and surfaces of plunger base (25).

23.Remove crankcase cover (4). Loosen inner hexagon screws (24A) on the connecting rods (24) and push con rod halves as far into the crosshead guide as possible.

CAUTION: Connecting rods (24) are marked for identification. Do not twist connecting rod halves. Connecting rod is to be reinstalled in the same position on crankshaft journals.

24.Check surfaces of the connecting rod (24) and crankshaft (22).

25.Take out bearing cover (14) to one side and push out crankshaft (22) taking particular care that the connecting rod (24) doesn't bend.

CAUTION: Ring (32A) must always be installed so that the seal-lip on the inside diameter faces the oil.

26.Reassemble in reverse order: Regulate axial bearing clearance - minimum 0.1mm, maximum 0.15mm-by means of fitting disc (20A). The crankshaft (22) should turn easily with little clearance. Tighten inner hexagon screws (24A) to 30 ft.-lbs.

CAUTION: Connecting rod (24) has to be able to be slightly moved sidewise at the stroke journals.

27.Reassemble cover (4) and seal (5) onto crankcase (1). Fasten with hexagon screws (10).

28.Reinstall shim (33C), and seal adaptor (33) with radial shaft seal (32), ring (32A) and o-ring (33A) onto crankcase (1).

29.Reinstall remainder of fluid end as described above in “To Assemble Valve Casing” section (21 and 22 above).

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Contents Model GP7122 Installation Instructions Important Operating ConditionsSpecifications Model GP7122 Exploded View GP7122 GP7122 Parts List Part Description QTYGP7122 Torque Specifications GP7122 Repair KitsTo Check Valves GP7122 Repair InstructionsTo Check Seals Loosen nuts 49A with a 24mm socket wrench38A 38C 38B To Assemble Valve Casing To Disassemble Gear ENDGP7122 Dimensions Inches Giant Industries Limited Warranty