Section Il. ORGANIZATIONAL MAINTENANCE TROUBLESHOOTING
troubleshooting malfunctions, possible causes and
4-3. General
corrective action to be taken. Refer to TM 5-2805-
Refer to paragraph 3-8 for a general description and
203-14 for military standard engine troubleshooting
purpose of troubleshooting. the lubricating and serv-
..
.
symptoms.
icing unit.
4-4. Troubleshooting Table
Table 4-2 lists the organizational maintenance
Table 4-2. Organizational Troubleshooting
Corrective action
Probable cause
Malfunction
1. Wheel hub throws
a. Improper bear-
a. Clean bearing
grease.
ing lubricant.
thoroughly and lubri-
cate in accordance with
LO 5-4930-207-12.
b. Loose or
b. Tighten or re-
cracked hub cap.
place hub cap (para
4-41).
c. Damaged or worn
c. Replace grease
grease seals.
seals (para 4-41).
d. Defective
d. Replace gasket
gasket in hub.
(para 4-41).
e. Other causes.
e. Refer other
causes to direct and
general support main-
tenance personnel.
2. Wheel bearings
a. Lack of wheel
a. Pack the wheel
overheat.
bearing lubricant.
bearings (para 4-41).
b. Wheel bearings
b. Adjust the wheel
improperly adjusted.
bearings (para 4-41).
c. Other causes.
c. Refer other
causes to direct and
general support main-
tenance personnel.
3. Wheels wobble.
a. Wheel loose on
a. Tighten wheel
hub.
mounting nuts (para 4-40).
b. Wheel damaged
b. Replace wheel
or bent.
(para 4-40).
c. Wheel bearings
C. Adjust or re-
out of adjustment or
place bearings (para
defective.
4-41).
d. Other causes.
d. Refer other
causes to direct and
general support main-
tenance personnel.
4. Trailer brakes in-
a. Defective air
a. Repair or re-
operative.
brake chamber.
place brake chamber
(para 4-45).
b. Defective brake
relay valve.
valve (para 4-45).
c. Defective master
c. Replace master
cylinder.
cylinder (para 4-44).
d. Air in hydraulic
d. Bleed the hy-
brake lines.
draulic brake lines
(para 4-42).
e. Other causes.
e. Refer other
causes to direct and
general support main-
tenance personnel.
4-2
