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TM 9-2330-272-14
2-8. LEAKAGE DEFINITIONS (Con’t)
CAUTION
When operating with Class I or II leaks, continue to check fluid levels in addition to that
required in PMCS. Parts without fluid will stop working or may be damaged.
b. Equipment operation is allowed with minor (Class I or II) leakage. Fluid levels in an item/system affected
with such Ieakage must be checked more frequently than required in PMCS. When in doubt, notify your supervisor.
c. Report Class III leaks IMMEDIATELY to your supervisor.
Table 2-1. Operator Crew Preventive Maintenance Checks and Services (PMCS).
B-BEFORE
D-DURING
A–AFTER
W–WEEKLY
INTERVAL
ITEM TO BE INSPECTED
ITEM
PROCEDURE: CHECK FOR AND HAVE REPAIRED,
EQUIPMENT IS NOT
NO.
B
D A W
FILLED, OR ADJUSTED AS NEEDED.
READY/AVAILABLE IF:
NOTE
Perform Weekly (W) as well as Before (B)
PMCS: if:
a. You are the assigned operator but
have not operated semitrailer since
last weekly.
b. You are operating semitrailer for the
first time.
1
I
EXTERIOR OF VEHICLE
Check for evidence of fuel leakage on or under semi-
Any fuel leakage is evident.
trailer.
2
TOWING CONNECTIONS
a. Inspect kingpin and upper fifth wheel plate for dam-
Kingpin and upper fifth wheel
age or loose mounting bolts.
plate are damaged, or mounting
bolts are loose.
b. Visually inspect for obvious cracked or broken
Any welds are cracked or broken.
welds along upper fifth wheel plate.
c. Connect towing vehicle air lines to air couplings on
Air leaks are evident.
semitrailer (para 2-10). With towing vehicle engine
running, check air lines and air couplings for air
leaks. Ensure that air reservoir is drained and drain-
cock is closed.
d. Inspect intervehicular cable receptacle on semi-
trailer for damage or corrosion. Connect towing ve-
hicle intervehicular cable to receptacle on semi-
trailer (para 2-10). Check all lights for damage.
Check that all lights are operating. If not operating,
check tightness of connection at receptacle. If
tight, have Organizational Maintenance test and
repair lights. Check intervehicular cable for dam-
age.
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