37. Broken or Cracked Toggle Plate
Probable cause
Possible remedy
Entry of uncrushable material................ Carefully observe all material and stop feeder prior to uncrushable material
into crusher.
entering crusher. Report broken toggle plate to field maintenance, 3d
echelon.
Crusher overloaded............................... Slow down pan feeder, especially when heavy hard stone is being crushed.
38. Material Piling on Screen Under Grizzly
Probable cause
Possible remedy
Worn or slipping drive belts................... Adjust or replace drive belts (par. 128).
Defective electric motors....................... Inspect and replace electric motor if necessary (par. 128).
Defective rubber mounting. ................... Replace rubber mounting (par. 151).
Defective drive sheave or key. .............. Replace sheave and key (par. 128).
39. Insufficient Production
Probable cause
Possible remedy
Crusher running too slow....................... Speed up engine rpm.
Corrugation worn smooth ..................... Jaws should be reversed.
on lower end of jaws.
Report this condition to field maintenance, 3d echelon.
Oversized rock being fed to crusher. ..... Feed smaller rock by scalping off the larger rocks before loading.
40. Pan Feeder Not Operating Properly or Inoperative
Probable cause
Possible remedy
Drive belts slipping or broken. ............... Replace drive belts (par. 127).
Defective electric motor ....................... Replace electric motor (par. 127).
Defective feeder drive........................... Repair feeder drive gear assembly. Report to field maintenance, 3d echelon.
gear assembly.
Defective or damaged bars, pins, .......... Replace bars, pins, and rollers (par. 145).
or rollers.
Rocks wedged between feeder.............. Remove rocks.
hopper chain belt.
Accumulation of dirt and sand in ........... Clean chain belt and lubricate (LO 5-3820-205-20/2).
rollers and improper lubrication.
41. Pan Feeder Hydraulic Hoist Inoperative
Probable cause
Possible remedy
Broken or leaking hydraulic ................... Replace defective hose or fittings (par. 137).
hose or fittings.
Defective control valve ......................... Replace defective vaIve (par. 135).
Scored or damaged cylinder or O-rings. Replace damaged cylinder (par. 137).
Insufficient, dirty, or improper................ Check fluid in oil tank, drain, flush and refill with proper grade fluid. (TM 5-3820-
grade hydraulic fluid.
205-10/2).
Damaged or leaking oil tank. ................. Replace oil tank (par. 136).
42. Tail and Marker Lights Inoperative
Probable cause
Possible remedy
Defective wiring ................................... Repair or replace wiring (pars. 111 and 123).
Defective trailer electrical ..................... Repair or replace coupling or receptacle (par. 110).
coupling or receptacle.
43. Brakes Faulty
Probable cause
Possible remedy
Slack adjusters out of adjustment.......... Adjust slack adjusters (par. 174).
Defective brake hose, .......................... Replace hose (par. 142).
or fittings.
Repair or replace line or fittings (par. 143).
Worn or oil soaked brake assemblies. ... Replace brake assemblies (par. 175).
Defective air chamber .......................... Replace air chamber (par. 139).
Damaged or defective relay valve......... Replace relay valve (par. 140).
Clogged or defective air filters............... Service air filters (TM 5-3820-205-10/2) or replace air filters (par. 141).
Leaking or damaged air tank or fittings.. Replace air tank or fittings (pars. 142 and 143).
44. Unable to Adjust Moveable Jaw
Probable cause
Possible remedy
Broken or defective adjusting ................ Replace worm and gears. Report this condition to field maintenance, 3d
echelon.
worm and gears.
Broken toggle plate ............................... Replace toggle plate. Report to field maintenance, 3d echelon.
45. Crusher Vibrates Excessively
Probable cause
Possible remedy
Crusher not level, faulty cribbing. .......... Level and securely crib the crusher.
Defective vibrator scalper screen .......... Replace rubber mountings(par. 151).
rubber mountings.
AGO 8156A
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