Giant installation instructions GP8045/GP8048 Pump Repair Kits, GP8000 Trouble Shooting

GP8045/GP8048 PUMP REPAIR KITS

Plunger Packing Kits				Valve Assembly Kit - GP8045 & GP8048
GP8045 - #09626				Inlet Valve Kit - #09628
Item	Part #	Description	Qty.	Item	Part #	Description	Qty.
38A	05387	O-Ring	6	51B	05400	Inlet Valve Seat	3
39A	05066	O-Ring	3	51C	05314	Valve Plate	3
40	13290	Seal Ring	3	51D	05401	O-Ring	3
42	05394	V-Sleeve	9	51E	07732-0100	Valve Spring	3
GP8048 - #09627				51F	08282	Valve Spring Guide	3
				56A	05410	O-Ring	3
Item	Part #	Description	Qty.
38A	05387	O-Ring	6	Discharge Valve Kit - #09629
39A	05066	O-Ring	3	Item	Part #	Description	Qty.
40	05390	Seal Ring	3	52B	05407	Discharge Valve Seat 3
42	05393	V-Sleeve	9	52C	05314	Valve Plate	3
Oil Seal Kit - #09584				52D	05408	O-Ring	3
				52E	07732-0100	Valve Spring	3
Item	Part #	Description	Qty.	52F	08282	Valve Spring Guide	3
32	05058	Radial Shaft Seal	3	56A	05410	O-Ring	3
33A	05056	O-Ring	3

GP8045/GP8048 TOOL LIST AND TORQUE SPECIFICATIONS

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	05399 / 05406	Valve Assemblies	n/a		Valve puller (p/n 07662) - included w/ pump
58	05087	Hexagon Socket Screw	132	(180)	12mm allen wrench
K5	07381	Hexagon Socket Screw	n/a		8mm allen wrench

GP8000 Trouble Shooting

Problem	Cause	Solution
Pressure drops, water leaks	V-sleeves leak	Replace V-sleeves, examine surface of
		plunger
Pressure drops, pump	Discharge or suction valve leaks	Replace valve
	Steam formation (cavitation)	Reduce suction height, reduce flow resistance
becomes loud		in inlet line, clean inlet filter, lower water
		temperature
Irregular pressure	Worn valves	Examine valves
	O-Ring on the valves or inlet valve	Examine O-ring, examine valve casing for
	adapter leaks	unevenness on the sealing surfaces
Oil leaks at visible part of	Gear sealing is leaky	Examine seals and running surface of plunger
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	Worn bearing	Dismantle gear, examine all parts, replace
pressure		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

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