TM 9-2330-271-14&P
CHAPTER 5
DIRECT SUPPORT AND GENERAL SUPPORT
MAINTENANCE INSTRUCTIONS
Section I. REPAIR PARTS, SPECIAL TOOLS AND EQUIPMENT
5-1. Special Tools and Equipment.
5-2. Repair parts.
Special tools and equipment are listed and illustrated in
Repair parts that cover direct and general support
Appendix E. The oil seal replacer (1, fig. 87) and wheel
maintenance for this equipment are listed and illustrated
bearing adjusting nut wrench (2, fig. 87) are used in
in Appendix E.
maintenance procedures for the hubs and brake drums.
Section II. TROUBLESHOOTING
5-3. Introductory Information.
Step 2.
Check for broken spring leaves, center
bolt, or clips
a. This
section
contains
troubleshooting
Replace spring, bolt or clip as necessary
information for locating and correcting most of the
operating troubles which may develop in the semitrailer.
5.
EXCESSIVELY WORN, SCUFFED, OR CUPPED
Each malfunction for an individual component, unit, or
TIRES
system is followed by a list of tests or inspections which
Step 1.
Check for Improper tire pressure
will help you to determine the corrective actions to take.
Inflate to proper pressu re (paragraph 3-18b)
You should perform the tests/inspections and corrective
Step 2.
Check for loose wheels.
Tighten wheel nuts
actions in the order listed.
Step 3.
Check for loose wheel bearings
b. This manual cannot list all malfunctions that
Adjust wheel bearings (paragraph 4-47f)
may occur, nor all tests or inspections and corrective
Step 4.
Check for deformed wheel or rim
actions. If a malfunction is not listed or is not corrected
Replace defective wheel (paragraph 3-18)
by listed corrective actions, notify your supervisor.
Step 5.
Check for deformed brake drum
Replace deformed brake drum (paragraph
you may find during the operation or maintenance of the
semitrailer or its components. You should perform the
Step 6
Check for bent axle
Replace defective axle
tests/inspections and corrective actions in the order
LANDING GEAR (Rigid Type)
listed.
6.
ERRATIC OPERATION (BINDING AND
GRINDING)
Table 5-1 Troubleshooting
Step 1.
Check for grit and dirt on working parts
MALFUNCTION
Clean working parts
TEST OR INSPECTION
Step 2.
Check for adequate lubrication
CORRECTIVE ACTION
Lubricate in accordance with the lubrication
ELECTRICAL SYSTEM
1.
Refer to table 4-2
7.
RATCHET CRANK DOES NOT TURN LANDING
BRAKE SYSTEM
GEAR SHAFT FREELY
2.
Refer to table 4-2
Step 1.
Check for adequate lubrication
SUSPENSION
Lubricate in accordance with the lubrication
3.
HARD PULLING.
Step 1.
Check for dragging brakes
Step 2.
Check for broken gear in gear train
Adjust brakes (paragraph 4-32)
Replace defective gear (paragraphs 7-3, 7-6)
Step 2.
Check for improper wheel bearing
8.
LEGS DO NOT RETRACT OR EXTEND FREELY
adjustment
Step 1.
Check for adequate lubrication
Adjust bearings (paragraph 4-47f)
Lubricate in accordan ce with the lubrication
Step 3.
Check for loose suspension springs.
Tighten U-bolt nuts
Step 2.
Check for defective gear train in leg.
4.
IMPROPER SPRING ACTION.
Replace defective part of gear train (para-
Step 1.
Check for loose U-bolt
graphs 7-3, 7-6).
Tighten U-bolt nuts
Step 3.
Check for damaged leg
Replace defective leg.
5-1
