TM 55-4920-212-15
thinner, engine fuels, or lubricants, on rubber tarts as
d. The use of diesel fuel oil, gasoline, or benzene
they will deteriorate the rubber.
(benzol) for cleaning is prohibited.
Section IV. TROUBLESHOOTING
36. Use of Troubleshooting Section
40. Electric Equipment Will Not Start
This section provides information useful in
diagnosing and correcting unsatisfactory operation or
Probable cause
Possible remedy
Power cord of equipment
failure of the shop set or any of its components. Each
not plugged into
trouble symptom stated is followed by a list of probable
receptacle........................................... Insert plug of equipment
causes of the trouble.
The possible remedy
cord into receptacle.
recommended is described opposite the probable cause.
Circuit breakers in elec
trical panel in OFF
position............................................... Reset circuit breakers to ON
37. Procedure
position.
To correct malfunctioning of equipment, the cause
Safety disconnect switch
should be systematically isolated in accordance with
open. .................................................. Close safety disconnect
switch.
instructions in the following paragraphs. If the correction
Cause beyond main
of the malfunction is beyond the scope of the operator's
tenance scope of
function, refer the discrepancy to the proper maintenance
operator. ............................................. Notify second maintenance
echelon for correction.
echelon.
38. Electrical Equipment Operates at Slow or
41. Pneumatic Equipment Operates at Slow or
Reduced Speed
Reduced Speed
Probable cause
Possible remedy
Probable cause
Possible remedy
Air compressor not
Loose connectors .................................. Tighten connectors.
operating. ........................................... Start air compressor; allow
One circuit breaker in
source pressure to reach
OFF position (208-
operational level; restart
220-volt equipment)............................ Return breaker to ON position.
equipment.
Cause beyond maintenance scope of
Air pressure not
operator. ........................................... .. Notify second maintenance
properly regulated at
echelon.
separator ........................................... Adjust pressure regulator
to proper level (75 psi).
39. Electrical Equipment Stops During Operation
Loose connection at
air hose quick
Probable cause
Possible remedy
disconnect adapter ............................ Reseat adapter.
Power cord of equipment
Water in air............................................. Drain water separator.
not properly plugged
Cause beyond main
into receptacle. ................................... Remove plug from receptacle and
tenance scope of
reinsert fully into receptacle.
operator. ............................................ . .Notify second maintenance
Equipment overheated ........................... Reduce operating speed; allow
echelon.
equipment to cool and restart.
Circuit breaker tripped
to OFF position................................... Reset circuit breaker to ON
position; restart equipment.
Cause beyond maintenance
scope of operator .............................. Notify second maintenance
echelon.
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