ALKOTA E320 - Page 28

PUMP TROUBLESHOOTING
08-27-03 Z08-00195
ECN-02981 Supersedes 06-00 Z08-00195
TROUBLE POSSIBLE CAUSE REMEDY
1. Oil leaking in the
area of water pump
crankshaft.
A. Worn crankshaft seal.
B. Bad bearing.
C. Grooved shaft.
D. Failure of retainer o-ring
A. Remove and replace.
B. Remove and replace.
C. Remove and replace.
D. Remove and replace.
2. Excessive play on
crankshaft.
A. Defective bearings.
B. Excess shims.
A. See "Worn bearing".
B. Set up crankshaft.
3. Loud knocking in
pump.
A. Loose conecting rod screws.
B. Worn connecting rod.
C. Worn bearings.
D. Loose plunger bushing screw.
A. Tighten connecting rod screws per
PUMP SPECIFICATIONS.
B. Replace connecting rod per PUMP
MAINTENANCE.
C. Replace bearings per PUMP
MAINTENANCE.
D. Tighten plunger screw per PUMP
SPECIFICATOINS.
4. Oil leaking at the
rear portion of the
pump.
A. Damaged or improperly
installed oil gauge window
gasket.
B. Damaged or improperly
installed rear cover.
C. Oil gauge loosed.
D. Rear cover screws loose.
E. Pump overfilled with oil,
displaced through crankcase
breather hole in oil
cap/dipstick.
A. Replace gasket or o-ring.
B. Replace gasket or o-ring.
C. Tighten oil gauge.
D. Tighten rear screws. to torque
values in PUMP SPECIFCATIONS. S
E. Drain oil: refill to recommended oil
level as stated in OIL LEVEL in PUMP
MAINTENANCE.
5. Water in crankcase A. May be caused by humid air
condensing into water inside
the crankcase.
B. Worn or damaged plunger
screw o-ring.
A. Maintain or step up lubrication
schedule.
B. Remove and replace. See PLUNGER
SERVICE in PUMP MAINTENANCE.
6. Worn bearing A. Excessive belt tension.
B. Oil contamination.
A. See BELT TENSION in MACHINE
MAINTENANCE.
B. Check oil type and change intervals
per PUMP SPECIFICATIONS.
7. Short bearing life A. Excessive belt tension.
B. Misalignment between pump
and motor.
C. Oil has not been changed on
regular basis.
A. See BELT TENSION in MACHINE
MAINTENANCE.
B. Re-align pump and motor.
C. Check oil type and change intervals
per PUMP SPECIFICATIONS.
8. Short seal life A. Damaged plunger bushing.
B. Worn connecting rod.
C. Excess pressure beyond the
pump's maximum rating.
D. High water temperature.
A. Replace punger bushing.
B. Peplace connecting rod.
C. Match pressure stated in PUMP
SPECIFICATIONS.
D. Lower water tempersture stated in
PUMP SPECIFCATIONS.
P8