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
Leakage at the cylinder
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
Replace worn cup orcups, clean out foreign material, replace worn valves.
Replace worn seals.
Check for plugged nozzle. closed valve! or improperly adjusted
Replace manifold.
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Exchange middle andoutboardcylinder,
Install new seals. If piston rod sleeves are scored, replace sleeves and sleeve
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 | : |
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 |
xankcase | I~ l u |
3illeakagefromdrain | Loose drain plug or worn drain plug |
,lug- |
.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
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
righten drain plug or replace
:heck key and tighten set screw.
3eplace bearings.
3eplace rods and sleeves.
3educe inlet pressure per instructions.
3eplace the cylinders.