Graco Inc 801-238, 800-051, 1204E manual Lhort cup life, ~ l u a0-Ring, Lug

Low pressure (Cont.)	Fouled or dirty inlet or discharge valves.
	Worn inlet or discharge valves. Leaky
	discharge hose.

SOLUTION

Clean inlet and discharge valve assemblies.

Replace worn valves, valve seats and/c discharge hose.

Pump runs extremely rough, pressure very low

Cylinder O-rings blown next t o discharge manifold

Leakage at the cylinder 0-Rings at the discharge manifold and black, powdery substance in the 'area of the 0-Rings.

WaterleakagefromWorn under the inlet manifold.

Inlet restriction andlor air leaks. Damag- ed cup or stuck inlet or discharge valve.

Worn inlet manifold seals.

Pressures in excess of rated PSI.

Warped manifold.

Loose cylinders. Cylinder motion caused by improper shimming of the discharge manifold.

inletmanifold seals.

Leaking sleeve 0-Ring.

Replace worn cup orcups, clean out foreign material, replace worn valves.

Replace worn seals.

Check for plugged nozzle. closed valve! or improperly adjusted by-pass valve.

Replace manifold.

~~

Exchange middle andoutboardcylinder,

Install new seals. If piston rod sleeves are scored, replace sleeves and sleeve 0-Ring.

0-Rings,

OilleakbetweenWorn	crankcase pistonrod	seals.
crankcase and pump-
ing section
Oil leaking in the area	Worn crankcase seal or improperly install.
of crankcase	ed oil seal retainer packing.
	Bad bearing.
Excessive play in the	Worn main ball bearing from excessive
end of thecrankcase	tension to drive belt.
pulley
Water in crankcase	May be caused byhumid	air condensing
	into water inside the crankcase.
	Leakage of manifold inlet seals and/or
	piston rod sleeve 0-Ring.	:

Oil leakage from under May be caused by excessive oiling of the

side of crankcase wick lubricators.

Worn crankcase piston rod seals.

Dilleakingat'tharear	Damagedor improperly installed oil gauge
portion of the	or crankcase rear cover 0-Ring, and drain
xankcase	I~ l u a0-Ring.
3illeakagefromdrain	Loose drain plug or worn drain plug
,lug-	I0-Ring..

.oud knockingnoise in Pulley loose on crankshaft. lump

		Broken or worn bearing.
hquent or premature Scored rodsor sleeves.
ailure of the	inlet	IOverpressureinletto manifold.
nanifoldseals
lhort cup life		Damaged or worn chrome plating of the
		Icvlinders.

Replace crankcase piston rod seals

Remove oil seal retainer and replace damaged gasket and/or seals.

Replace bearing.

Replace ball bearing. Properly tension belt. Check shaft shims.

Change'oil every month or 200 hours.

Replace seals,sleeve and 0-Rings.

Wipe free of oil. Do not oil lubricators for a short period. If leakage continues, replace the crankcase piston rod seals.

Replace oil gauge or cover 0-Ring, and drain plug 0-R,ing.

righten drain plug or replace 0-Ring.

:heck key and tighten set screw.

3eplace bearings.

3eplace rods and sleeves.

3educe inlet pressure per instructions.

3eplace the cylinders.