TM-9-2330-356-14
SEMITRAILER, TANK: 5000 GALLON, BULK HAUL, SELF LOAD/UNLOAD M967 AND M967A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, AUTOMOTIVE M969 AND M969A1; SEMITRAILER, TANK: 5000 GALLON, FUEL DISPENSING, UNDER/OVERWING AIRCRAFT M970 AND M970A1
TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL
OCTOBER 1990
TM-9-2330-356-14 - Page 312 of 528
TM 9-2330-356-14
b.
Visual inspections are to be made before
operating the equipment or performing any functional
tests. The purpose of these inspections is to determine the
condition of the component or assembly for obvious
indications of damage. If damage is evident, corrective
action shall be taken to prevent further damage.
c.
Inspections and tests performed after the
component or assembly has been removed from the
semitrailer are to verify the original diagnosis and to
uncover further defects.
d.
Complete disassembly of a component or
assembly to determine the cause of malfunction should be
done only if the preliminary tests fail to show the trouble.
A careful inspection of the component parts should then
be made to pinpoint the problem. An analysis of the
damaged part should also be made to determine if
corrective action, other than replacing the damaged part,
can be taken to prevent recurrence of the problem.
Table
5-4.
Troubleshooting - Direct Support
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKE SYSTEM
1.
RAPID BRAKE LINING WEAR.
Step 1.
Check the linings to ensure that the correct linings are being used. Combination linings should not
be used.
Install correct linings on brake shoes (para 6-6).
Step 2.
Inspect brake drums for scoring, cracks, or uneven wear.
If brake drum is cracked or badly damaged, it must be replaced. If scoring is less than
1/16-inch deep, the brake drum can be rebored (para 6-7).
ENGINE
2. STARTER MOTOR DOES NOT TURN - HIGH CURRENT DRAW.
Step 1.
Check starter for grounded switch, terminals, or field (para 7-90)
Replace grounded component.
Step 2.
Check for frozen armature shaft bushing (para 7-90).
Replace bushing. Replace starter if necessary.
3. STARTER DOES NOT TURN - NO CURRENT DRAW.
Step 1.
Check for open armature windings (para 7-90).
Replace starter.
Step 2.
Check for open starter field windings (para 7-90).
Replace starter.
Step 3.
Check for broken or weak brush springs (para 7-78 or 7-90),
Replace brush springs if necessary.
Step 4.
Check for worn commutator (high mica) (para 7-78).
Replace starter.
. -
5-4
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