TM 5-3820-205-10-1
42.
Conveyor Does Not Run Properly or Will Not Run
Probable cause
Possible remedy
Too much slack in drive belts ............................... Adjust drive belts (figs. 60-62).
Circuit breaker tripped .......................................... Correct cause of overload and reset the circuit breaker.
Grease on drive sheave or belt ............................ Clean grease off drive sheave or belt with approved cleaning
solvent.
43.
Crusher Rolls Do Not Turn or Come Up To Normal Speed
Probable cause
Possible remedy
Crusher roll drive belts slipping due to dirt or
grease on belts and pulleys ............................. Clean crusher roll drive belts and pulleys.
Engine clutch slips ............................................... Adjust clutch.
44.
Screen Vibrates Excessively
Probable cause
Possible remedy
Loose rubber mounts ........................................... Tighten mounting hardware for rubber mounts.
Motor drive belts slipping ..................................... Adjust motor drive belts (figs. 51 and 52).
45.
Screen Will Not Vibrate
Probable cause
Possible remedy
Drive belts slipping or broken ............................... Adjust V-belts (figs. 51 and 52). Report broken V-belts to
organizational maintenance.
Motor circuit breaker or magnetic starter trips ...... Correct cause of overload or report to organizational
maintenance.
46.
Feeder Will Not Operate or Works Slowly
Probable cause
Possible remedy
Drive belts slipping or broken ............................... Inspect V-belts for slipping and adjust as required (figs. 57 and 58).
Report broken V-belts to organizational maintenance.
Motor circuit breaker or magnetic switch tripped,
continues to trip................................................ Correct cause of overload or report to organizational
maintenance.
Frozen bearing in feeder rollers ........................... Report condition to organizational maintenance.
47.
Rotary Elevator Will Not Turn or Turns at Low Speed
Probable cause
Possible remedy
Drive belts slipping ............................................... Adjust drive belts (fig. 59).
Circuit breaker tripped .......................................... Correct cause of overload and reset circuit breaker.
48.
Electric Motors Will Not Run
Probable cause
Possible remedy
Circuit breaker or relay overload tripped .............. Reset circuit breaker or relay overload (figs. 17 and 18).
Voltage source fluctuating .................................... Report condition to organizational maintenance.
49.
Electric Motors Run Too Hot
Probable cause
Possible remedy
Motors overloaded ............................................... Check condition of machinery driven by motor. Correct
deficiencies or report to organizational maintenance.
Trash or foreign matter obstructing air flow
through motors ................................................. Remove any obstruction blocking air flow through motors.
Defective motor ................................................... Report defective motor to organizational maintenance.
Voltage source fluctuating .................................... Check power source for proper voltage.
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