Section V. FIELD EXPEDIENT REPAIRS
44. Engine Stops
43. Field Expedient Repairs
Trouble
Expedient remedy
Organizational maintenance troubles may occur
Clogged fuel filter........................ Remove clogged fuel filter
while the roll crusher is operating in the field where
element.
supplies and repair parts are not available and normal
Engine overheats........................ Remove thermostats.
corrective action cannot be performed. When this
condition exists, the following expedient repairs may be
45. Controls at Operators Stations Defective
used in emergencies, upon the decision of the unit
Trouble
Expedient remedy
commander. Equipment so repaired must be removed
Defective start and stop
Disconnect wires from rear
from operation as soon as possible and properly
electrical motor push-
of pushbutton and connect
repaired before being placed in operation again.
button control.
wires direct, bypassing the
button. Until a new push-
button can be obtained op
erate roll crusher from
main control panel. See
wiring diagram, figure 1.
Section VI. RADIO INTERFERENCE SUPPRESSION
strap and mounting hardware. Be certain of a good
46. General Methods Used To Attain
metal-to-metal contact.
Proper Suppression
Essentially, suppression is attained by providing a
b. Secondary Suppression Components.
low resistance path to ground for the stray currents. The
(1) Tooth-type lockwashers.
methods used include shielding the ignition and high-
(a) If proper suppression is to be
obtained, it is necessary that a good
straps, and using capacitors and resistors, For general
metal-to-metal contact is obtained
information on radio interference suppression, see TM
by
tightening
the
mounting
11-483.
hardware employing tooth-type
lockwashers.
47. Interference Suppression Components
(b) For replacement of tooth-type
a. Primary Suppression Component. The engine-
lockwashers, refer to paragraphs
to-frame bonding strap is illustrated on figure 7.
b. Secondary Suppression Components.
(2) Shielded cable. Replace the shielded
(1) Tooth-type lockwashers.
Tooth-type
generator-to-generator regulator cable
lockwashers are used to assure a good
metal-to-metal contact where electrical
components are mounted.
49. Testing of Radio Interference
(2) Shielded cable.
The generator is
Suppression Components
equipped with a shielded cable connecting
Test the capacitors for leaks and shorts on a
the generator and generator regulator.
capacitor tester; replace defective capacitors. If test
equipment is not available and interference is indicated,
48. Replacement of Suppression Components
isolate the cause of interference by the trial-and-error
a. Primary Suppression Component. Replace the
method of replacing each capacitor in turn until the
bonding strap (3 fig. 7) by removing the bolt (5) washer
cause of interference is located and eliminated.
(6) and nut (2) that secures it to the timing gear cover
(1) and the engine frame (4). Install a new bonding
AGO 8157A
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