ZEP 440C-G, Руководство по обслуживанию

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18
Troubleshooting
Trouble Possible Cause Remedy
Oil leaking in the area of
water pump crankshaft
Worn crankshaft seal, bad bearing,
grooved shaft, or failure of retainer
o-ring.
Remove and replace.
Excessive play on
crankshaft
Defective bearings. See “Worn bearing.”
Excess shims. Set up crankshaft.
Loud knocking in pump Loose connecting rod screws. Tighten connecting rod screws per PUMP
SPECIFICATIONS
Worn connecting rod. Replace connecting rod per PUMP MAINTENANCE.
Worn bearings. Replace bearings per PUMP MAINTENANCE.
Loose plunger bushing screw. Tighten plunger screw per PUMP SPECIFICATIONS.
Oil leaking at the rear
portion of the pump
Damaged or improperly installed oil
gauge window gasket or rear cover.
Replace gasket or o-ring.
Oil gauge loosed. Tighten oil gauge.
Rear cover screws loose. Tighten rear screws to torque values in PUMP
SPECIFICATIONS.
Pump overfilled with oil, displaced
through crankcase breather hole in
oil cap/dipstick.
Drain oil. Refill to recommended oil level as stated in
OIL LEVEL in PUMP MAINTENANCE.
Water in crankcase May be caused by humid air
condensing into water inside.
Maintain or step up lubrication schedule.
Worn or damaged plunger screw
o-ring.
Remove and replace. See PLUNGER SERVICE in
PUMP MAINTENANCE.
Worn bearing Excessive belt tension. See BELT TENSION in MACHINE MAINTENANCE.
Oil contamination. Check oil type and change intervals per PUMP
SPECIFICATIONS.
Short bearing life Excessive belt tension. See BELT TENSION in MACHINE MAINTENANCE.
Misalignment between pump and
motor.
Re-align pump and motor.
Oil has not been changed on
regular basis.
Check oil type and change intervals per PUMP
SPECIFICATIONS.
Short seal life Damaged plunger bushing. Replace plunger bushing.
Worn connecting rod. Replace connecting rod.
Excess pressure beyond the
pump’s maximum rating.
Match pressure stated in PUMP SPECIFICATIONS.
High water temperature. Lower water temperature stated in PUMP
SPECIFICATIONS.
Dirty or worn check
valves
Normal wear. Remove and replace.
Debris. Check for lack of water inlet screens.
Troubleshooting
Pump