TM-5-2330-325-13-P
SEMITRAILER, MEDIUM HEAVY EQUIPMENT TRANSPORTER (MHET), 40 TON, M870A3
TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JUNE 2014
TM-5-2330-325-13-P - Page 166 of 648
Table 1.
Operator Preventive Maintenance Checks and Services (PMCS) Procedures - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
4
Before
Kingpin
Visually inspect kingpins for cracks or excessive wear.
Inspect for chips, nicks, gouges, and wear.
Excessive wear, cracks,
or damage.
Nick or chip deeper than
0.125 in. (3.017 mm) is
found anywhere on wear
surface, or wear exceeds
0.0625 in. (1.59 mm) over
25% of wear surface.
5
Before
Kingpin Plate
Inspect kingpin plate for cracks and dents.
Kingpin plate is cracked
or dented.
6
Before
Gladhands
Inspect all gladhands and rubber grommets
for serviceability.
Any gladhand or rubber
grommet is missing
or unserviceable.
7
Before
Air Tanks
Check for leaks in air reservoir tanks.
Any leaks are evident.
8
Before
Dump Valves
Momentarily, check air tank dump valve release cable.
Inoperative or leaking
dump valve.
9
Before
Brake Air Lines
Have an assistant operate service brakes. Listen for air
leaks at gladhands and air reservoir.
Semitrailer brakes fail to
hold or air leaks
are found.
10
Before
Tire Pressure
Check tire pressure when tires are cool.
11
Before
Tires
Check tires for gouges, cracks, tread separation, and
foreign objects lodged in tread or tire.
Any tire is flat, missing,
or unserviceable.
12
Before
Wheels
Check wheels for damage.
Any wheel is damaged.
13
Before
Lug Nuts
Check lug nuts for tightness and ensure all lugs
are installed.
Any lug nuts are missing.
14
Before
Spare Tire
Crane (Tool Box)
Check crane for worn, rusted, broken cable, or
damage to crane parts.
15
Before
Hub MIleage
Meter
Inspect hub mileage meter (Figure 1) for damage. Note
mileage on DA Form 2404/5988E.
466-0027
Figure 1.
Hub Mileage Meter.
TM 5-2330-325-13&P
0033
0033-2
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