Giant GP8055, Manual

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8
Problem Cause Solution
Pressure drops, water leaks V-sleeves leak Replace V-sleeves, examine surface of
plunger
Discharge or suction valve leaks Replace valve
Steam formation (cavitation) Reduce suction height, reduce flow resistance
in inlet line, clean inlet filter, lower water
temperature
Worn valves Examine valves
O-Ring on the valves or inlet valve
adapter leaks
Examine O-ring, examine valve casing for
unevenness on the sealing surfaces
Oil leaks at visible part of
plunger
Gear sealing is leaky Examine seals and running surface of plunger
Dirty mile-colored frothy oil Oil has mixed with water Replace oil immediately, find and fix the cause
Oil leakage on the crankshaft Shaft seal ring leaks Check seal and shaft
Noise increases without loss of
pressure
Worn bearing Dismantle gear, examine all parts, replace
worn parts, check oil level. If service life was
too short, check for excess strain or whether
lubrication intervals were too long. Only
specified lubricants are to be used
Pressure drops, pump
becomes loud
Irregular pressure
GP8000 Troubleshooting
ITEM PART # DESCRIPTION TORQUE Ft-lbs (NM) TOOL NEEDED
17 05038 Hexagon Socket Screw 64 (87) 10mm allen wrench
24 05047 Connecting Rod Hexagon Socket Screw 37 (50) 8mm allen wrench
33B 05054 Clip Ring n/a Industrial Snap ring pliers
36C 05062 Tension Screw 30 (40) 16mm socket
49A 05073 Hexagon Nut (manifold) 265 (360) 30mm socket
51/52 05084/05076 Valve Assemblies n/a Valve puller (p/n 07662) - included with pump
58 05087 Hexagon Socket Screw 132 (180) 12mm allen wrench
K5 07381 Hexagon Socket Screw n/a 8mm allen wrench
GP8055/GP8060/GP8065 TOOL LIST AND TORQUE SPECIFICATIONS
GP8055(-1000)/GP8060(-1000)/GP8065(-1000) PUMP REPAIR KITS
Plunger Packing Kits
GP8055 - #09616
Item Part # Description Qty.
38A 13286 O-Ring 6
38B 05281 Support Ring 6
39A 05066 O-Ring 3
40 07723 Seal Ring 3
42 05277 V-Sleeve 9
GP8060 - #09617
Item Part # Description Qty.
38A 06667 O-Ring 6
39A 05066 O-Ring 3
40 05067 Seal Ring 3
42 05069 V-Sleeve 9
GP8065 - #09586
Item Part # Description Qty.
38A 06667 O-Ring 6
39A 05066 O-Ring 3
40 06996 Seal Ring 3
42 06997 V-Sleeve 9
Oil Seal Kit - #09584
Item Part # Description Qty.
32 05058 Radial Shaft Seal 3
33A 05056 O-Ring 3
Inlet Valve Kit - #09587
Item Part # Description Qty.
51 04186 Inlet Valve Assembly 3
56A 06258 O-Ring 3
Discharge Valve Kit - #09588
Item Part # Description Qty.
52 04188 Discharge Valve Assembly 3
56A 06258 O-Ring 3
266
133
19mm