Malfunction
Probable cause
Corrective action
maximum lift and swing. (See capacity chart
in cab for boom angle or radius required for
lift).
26.
Dragline bucket will not dump
a. Dump sheave binding
properly
sheave (LO 5-3810-206-12).
b. Fairlead sheaves binding
b. Clean sheave throat. Lubricate sheaves
(LO 5-3810-206-12).
c. Bucket does not dump soon enough
c. Lengthen dump cable.
d. Bucket dumps too soon
d. Shorten dump cable.
27.
Shovel front end attachment does
a Adjust (para 3-28).
not operate properly
b. Dipper trip inoperative
clutch shoes (para 49).
c. Crowd chain loose
28.
Propel chain excessively noisy
a. Chain loose or defective
b. Worn sprocket too tight
29.
Pins and bushings in crawler
a. Crawler track too tight
a. Adjust (para 3-37).
track wear excessively
b. Crawler track too loose
b. Adjust (para 3-37).
30.
Idler roller wear excessive
a. Crawler track out of adjustment
a. Adjust (para 3-37).
b. Idler roller, or drive shaft, not
b. Adjust (para 3-37).
parallel to horizontal propel shaft
31.
Trackshoes wear excessively
a. Too much sag in track
a. Adjust (para 3-37).
b. Defective track
Section VI. FIELD EXPEDIENT REPAIRS
3-42. General
3-45. Engine Starved for Fuel
Organizational maintenance troubles may occur while
Trouble
Expedient remedy
the crane-shovel is operating in the field where supplies
Clogged filter element ----------------------- Remove filter element (para 3-
13) and operate without
and repair parts are not available and corrective action
until one is received.
cannot be performed. When this condition exists, the
Defective fuel filter---------------------------- Remove fuel filter (paras 3-68
following expedient repairs may be used in
or 3-69), connect by-pass
emergencies, upon the decision of the unit commander.
line, and operate without
Equipment so repaired must be removed from operation
until one is received.
as soon as possible and properly repaired before being
placed in service again.
3-46. Low Engine Oil Pressure
3-43. Starter Motor Fails to Turn Engine
Trouble
Expedient remedy
Clogged filter element ----------------------- Remove oil filter element (para
Trouble
Expedient remedy
until one is received
Dead batteries --------------------------------- Use jumper cables from other
batteries or another piece
of equipment to supply
current for starting engine.
3-47. Engine Oil Strainer Faulty
3-44. Engine Overheats
Trouble
Expedient remedy
Clogged or defective filter element-------- Remove filter element (para 3-
Trouble
Expedient remedy
4g) reassemble oil strainer
Defective thermostat ------------------------- Remove thermostats (para 3-
and use without until one is
98) and operate without
received.
until one is received.
3-44
