GP7132 AND GP7136 REPAIR INSTRUCTIONS
CAUTION: Don't loosen the 3 plunger (36) before the valve casing has been removed otherwise the plunger (36) could hit against the spacer pipe (51F) when the pump is being turned.
Seal life can be increased if the pretensioning allows for a little leakage. This assists lubrication and keeps the seals cool. It is therefore not necessary to replace seals before the leakage becomes too heavy and causes output and operating pressure to drop.
MOUNTING VALVE CASING
NOTE: Replace worn parts; grease seals with silicone before installing.
12.Check
13.Push valve casing carefully onto
TO DISASSEMBLE GEAR
14.Take out plunger (36) and seal sleeves (39) as described above. Drain oil.
15.After removing the circlip ring (33B), lever out seal retainer (33) with a screw driver. Check seals (32,32A,33A) and surfaces of crosshead.
16.Remove crankcase cover (4). Loosen inner hexagon screws on the connecting rods (24) and push con rod halves as far into the crosshead guide as possible.
CAUTION: Connecting rods are marked for identification. Do not twist con rod halves. Con Rod is to be reinstalled in the same position on shaft journals.
17.Check surfaces of connecting rod and crankshaft (22). Take out bearing cover (14) to one side and push out crankshaft taking particular care that the connecting rod (24) doesn't bend.
CAUTION: Seal (32A) must always be installed so that the
CAUTION: Connecting rod (24) has to be able to be slightly moved sidewise at the stroke journals.
GP7132 and GP7136 TORQUE SPECIFICATIONS
Position | Item# | Description | Torque Amount |
24A | 07616 | Fitting Screw | 30 |
36C | 07664 | Tensioning Screw | 26 |
49A | 13160 | Nut | 103 |
58 | 07699 | Plug | 155 |
9