TM 9-2330-294-14
Table 5-2. TroubleshootingContinued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
BRAKES (Cent)
SLOW BRAKE APPLICATION OR SLOW RELEASE
Check for defective wedge assembly.
Repair wedge assembly (pars 6-30).
4. FAIL-SAFE NOT HOLDING
Check for broken or jammed power spring.
Repair fail-safe (para 6-25).
SUSPENSION SYSTEM
5. SEMITRAILER SAGS TO ONE SIDE
Check for broken or disconnected torque rod axle bracket (fig. 5-5).
Connect torque rod axle bracket (para 5-13f ) or repair weld (para 6-42).
6. EXCESSIVELY WORN, SCUFFED OR CUPPED TIRES
Step 1. Check for damaged suspension components (fig. 5-5 and 5-8).
Replace or repair damaged components (pare 5-13 through 5-16).
Step 2. Check axle alinement.
Aline axle (para 5-9 and 5-14.f.).
Replacement parts should be requisitioned im-
d. During disassembly, tag critical parts such as
bearings, and electrical harnesses and leads,
mediately.
facilitate reassembly. This is especially important
f. Use of Tools
electrical equipment of circuit number tags are
(1) Care must be exercised to use tools that are
suitable for the work to be performed, to void
illegible or missing.
e. Mark mating parts by scribe marks, or with
damage to tools, damage to the equipment, or injury
dye, indelible ink, or paint, to be certain of correct
to personnel.
positioning at assembly.
(2) Special tools and improvised tools are listed
CAUTION
and illustrated in table 5-1. These tools should only
be used for maintenance operations for which they
Never scribe mark bearing surfaces.
were designed and personnel should be carefully
instructed in their specialized operation.
a. Unserviceable and unrepairable assemblies will
g. Ball and Roller Bearings. Refer to TM 9-214
be broken down into items of issue, and serviceable
for cleaning, inspection, and lubrication of bearings,
parts will be returned to stock. Parts or assemblies
and instructions for evaluation of bearing life.
which cannot be repaired, selective-fitted or
h. Welding.
reclaimed to the standards contained in this manual
(1) For general welding instructions and
will be salvaged and replaced with new parts.
welding materials refer to TM 9-237. All welds must
b. When assembling components and assemblies,
reflect good workmanship and approved welding
replace damaged keys with new ones. If screws,
procedures. Welds and weldments must be secure,
washers, or nuts are loose or damaged, they will be
free from cracks, excessive spatter and obvious
replaced.
defects, corrosion, undercutting, overlapping, poor
c. Gaskets, preformed packing, and seals will be
fusion and brittleness.
(2) For specific welding instructions and
d. Springs will be replaced if broken, kinked,
welding materials refer to paragraph 6-39.
cracked or do not conform to specific tensile stan-
i. Surface Protection.
dards.
(1) Clean and repaint all surfaces on which
e. If a required new part is not available, recon-
paint has deteriorated or become damaged (TM 43-
of the old part is necessary. Such parta
0139).
should be inspected carefully after reconditioning to
(2) Do not paint electrical harnesses or leads.
determine their suitability and probable service lfe.
Change 2