GIANT PUMPS GP5132GB-180 Repair Instructions

Plunger Packing Kit - #09290
Item Part# Description
35B 08183 O-Ring
36 13360 Grooved Ring
37A 07700 O-Ring
37B 07653 O-Ring
40 13027 V-Sleeve
Oil Seal Kit - #09230
Item Part # Description
31 13284 Oil Seal
GP5132GB-180 Torque Specifi cations/Lubrication Information
Position Item#
1 03248
3 05943
10 07008
12 07703
24 13276
31 13284
29C 13031
48A 07008
49 13339
To Check Valves
Remove inner hexagon screw (48A) and remove plugs (48) with a screwdriver. Check O-rings on plugs (48). Pull out tension
spring (48C). Remove the spring tension disc (47F) from discharge valve lying underneath by screwing in the M10-screw.
Take out spring (47E) and plate (47D). Pull out valve seat (47C) by means of an valve puller. Check sealing areas of plate
and valve seat for damage and replace worn parts. Check O-rings (47A) and (47B). Screw spacer pipe (46G) out of spring
tension cap (46F) in the suction valve lying underneath. Remove suction valve by screwing in an M10-screw. Check O-ring
(46A) and (46B). If valve seat (46C) remains in the valve casing (43) then carry forth as described for discharge valve. When
reassembling, use new O-rings if possible and oil them before installing.
Tighten inner hexagon screws (48A) to 35 ft.-lbs. (47 Nm).
To Check Seals and Plunger Pipe
Loosen the inner hexagon screws (49) and pull off valve casing (43) to the front. Pull seal sleeves (35) out of guides in
crankcase and over the plunger pipe (29B). Pull support ring (41), sleeves (40) and pressure ring (39) out of seal sleeve.
Check plunger surfaces, sleeves (40) and grooved rings (36). Replace worn parts.
If the plunger pipe is worn out, loosen tension screw (29C) and pull off plunger pipe to the front. Clean contact surfaces of
plunger (25) thoroughly. Then place new plunger pipe carefully through the oiled seals into the seal case. Check o-rings on
seal sleeves and seal case and replace worn o-rings. Then push seal sleeve together with plunger pipe into the crankcase
guide. Turn gear carefully until plunger (25) comes up against the plunger pipe. Put a new copper gasket (29D) onto the
tension screw (29C). Cover the thread of tension screw and the gasket with glue and tighten to 22 ft.-lbs. (30 Nm).
GP5132GB-180 Repair Kits
Qty.
3
3
3
3
6
Qty.
3
Description
Crankcase
Oil Sight Glass Assembly
Inner Hexagon Screw
Drain Plug, 3/4" BSP
Connecting Rod Assembly
Radial Shaft Seal
Tension Screw, Plunger
Inner Hexagon Screw, Plug
Inner Hexagon Screw, Valve Casing
GP5132GB-180 Repair Instructions
Inlet Valve Kit - #09231
Item Part # Description
46A 12055 O-Ring
46B 08059 O-Ring
46C 13304 Valve Seat
46D 13306 Valve Plate
46E 13307 Valve Spring
Discharge Valve Kit - # 09232
Item Part # Description
47A 13289 O-Ring
47B 07700 O-Ring
47C 13314 Valve Seat
47D 13306 Valve Plate
47E 13307 Valve Spring
Lubrication
Molycote Cu-Paste
Loctite 572
Loctite 403
Loctite 243
6
Qty.
1
1
1
1
1
Qty.
1
1
1
1
1
Torque Amount
22 ft.-lbs. (30 Nm)
33 ft.-lbs. (45 Nm)
74 ft.-lbs. (100 Nm)
22 ft.-lbs. (30 Nm)
22 ft.-lbs. (30 Nm)
35 ft.-lbs. (47 Nm)
89 ft.-lbs. (120 Nm)