TM 5-3895-356-14&P
TROUBLE SHOOTING
ASPHALT PUMP
BITUMINOUS PUMP FAILS TO DELIVER
RATED CAPACITY
Probable cause
Probable remedy
Worn or damaged impeller ............................................................. Replace Impeller
Damaged pump bearing ................................................................. Replace bearing
NOISY PUMP OPERATION
Probable cause
Probable remedy
Impeller loose on shaft ................................................................... Replace Impeller or shaft
Worn pump shaft bushings ............................................................ Replace the bushings
Shaft seal defective ........................................................................ Replace the seal
PUMP WILL NOT TURN OR TURNS SLOWLY
Probable cause
Probable remedy
Asphalt material below pumping temperature ................................ Reheat to pumping temperature
Air leak in suction line from hydraulic
reservoir to filter to Inlet of charge pump
on back of hydraulic pump ............................................................. Tighten all connections
Defective hydraulic pump or motor Check for
excessive case drain . .................................................................... Replace defective pump or motor
Hydraulic system pressure low....................................................... Increase motor by-pass pressure to 4500 P.S.I.
Low oil level m reservoir ................................................................. Replenish oil (type A)
Spray bar control valves set Improperly ......................................... Reset controls
BURNERS
BURNERS INOPERATIVE OR OPERATING
IMPROPERLY
Probable cause
Probable remedy
Clogged fuel lines ........................................................................... Drain and clean the lines
Faulty valves
............................................................................. Repair valves
Fuel pump inoperative .................................................................... Repair fuel pump
FIFTH WHEEL
FIFTH WHEEL FAILS TO RAISE
Probable cause
Probable remedy
Wheel frame bending or bent ......................................................... Repair the wheel frame
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