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 172 of 648
Table 1.
Field Preventive Maintenance Checks and Services (PMCS) - Continued.
ITEM
NO.
INTERVAL
ITEM TO BE
CHECKED OR
SERVICED
PROCEDURE
EQUIPMENT
NOT READY/
AVAILABLE IF:
4
Monthly
Electrical
Connector
Hinges
Lubricate electrical connector hinges (WP 0093).
5
Monthly
Slack Adjuster
Lubricate slack adjuster (WP 0093).
6
Semiannual Wheels and
Tires
1. Measure tread depth. Measurements should be
taken at random locations on tire.
2. To rotate and match tires. Refer to
TM-9-2610-200-14.
3. Check wheel nuts for tightness. Torque nuts to
450-500 lb ft (610-678 N·m).
7
Semiannual Brake Air
System
Check all air hoses for leaks, kinks, bends, cracks, and
missing mounting clamps.
8
Semiannual Brakes
Check for proper operation and adjustment.
Failure to operate
properly or are out
of adjustment.
9
Semiannual Brake Drums
Visually inspect brake drums for cracks, scoring,
gouging, or abnormal wear.
Excessive wear, cracks,
or damage.
10
Annual
Brake Linings
1. Check brake linings for sufficient material.
Brake shoes show
excessive wear (less than
0.0625 in. [1.59 mm]).
2. Check brake linings for damage.
Lining thickness less than
0.25 in. (6.4 mm) or to the
wear indicator if the lining
is so marked (measured
at the shoe center for
drum brakes).
11
Annual
Brake Drums
Measure brake drums to check for excessive wear.
Should not exceed 0.120
in. (3.04 mm) over the
original diameter. When
reboring brake drums, the
finished diameter should
not exceed .080 in. (2.03
mm) over the original
diameter.
12
Annual
Wheel Bearing
and Seals
1. Remove wheel bearings and visually inspect for
wear or damage.
Excessive wear or
damage.
2. Visually inspect bearing seal for wear or damage.
Excessive wear or
damage.
3. Lubricate wheel bearing (WP 0093).
Excessive leakage or
cracks in seal.
13
Annual
Lift Cylinder Pin
Lubricate lift cylinder pin (WP 0093).
TM 5-2330-325-13&P
0034
0034-2
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