TM 9-2330-271-14&P
Table 4-1. Organizational Preventive Maintenance Checks and Services - Continued
Q=Quarterly
A=Annually
H=Hours
S=Semiannually
B=Biennially
MI=Miles
ITEM
INTERVAL
Item To
NO
Q S A B H MI
Be Inspected
Procedures
LANDING GEAR
9
With semitrailer coupled to towing vehicle,
check operation of landing gear.
BODY
10
Inspect for loose or damaged hardware.
11
Visually inspect for Indications of rust.
BRAKES
12
During road operation, make several
stops, observe any side pull, noise,
chatter, or other unusual condition.
Apply semitrailer brakes only, verify that
brakes operate properly.
BRAKE DRUMS AND
HUBS
13
Following operation, cautiously feel
brake drums and hubs. An overheated
drum/hub may indicate an improperly
adjusted, defective, or dry wheel bearing
or dragging brake. An unusually
cool drum/hub may indicate an inoperative brake.
SPRINGS/SUSPENSION
14
Inspect springs suspension and torque
rods for loose or broken components.
15
Tighten spring U-bolts, leaf clips, all
assemblies, and mounting bolts
WHEEL BEARINGS
16
Clean wheel bearings and repack.
KINGPIN, FIFTH WHEEL
17
Inspect kingpin and upper fifth wheel
plate for damage. Tighten all mounting
hardware Lubricate as necessary.
AIR SUSPENSION SYSTEM
18
First
Inspect for loose nuts, bolts, and air
1000
connections Tighten as necessary.
&
3000
19
First
Check air springs for equal inflated
1000
firmness
&
3000
20
First
Check ride height dimension
1000
&
3000
21
Check suspension system for broken or
abnormally worn parts
22
Block up rear of semitrailer until tires
clear ground and suspension is fully
extended Insure that air springs fully
deflate
4-9