TM 9-2330-356-14
Table 3-1. Operator/Crew Preventive Maintenance Checks and Services (Con`t).
W-Weekly
D-During
A-After
M-Monthly
B-Before
ITEM TO BE INSPECTED
Equipment Is Not
PROCEDURE Check for and have repaired,
Ready/Available If:
filled or adjusted as needed.
Tank.
Tank shell has leaks.
a. Inspect tank shell for dents and leaks.
Leaks are evident.
b. Check for leaks around fusible vent caps.
Tighten caps if loose.
Manhole cover gasket is dam-
c. Check for leaks around manhole cover. If
aged.
leaks are evident, check for damaged cover
gasket, loose mounting ring, and that cover is
securely latched.
Catwalk Drains.
Inspect for clogged drains. Remove foreign matter.
Emergency Valve and Vent.
Esure that all valves are closed. Operate control
Control lever A will not actuate
emergency valve lever, or vent
ever A and ensure that the cable is actuating the
fails to open.
emergency valve lever and opens the vent on top of
semitrailer.
Emergency Valve Shut-off.
Control lever A does not move
Ensure that all valves are closed. Move control
to the CLOSED position.
ever A to the OPEN position. On the front curbside
of the semitrailer, pull the emergency valve shut-off
control. Observe that control lever A has moved to
he CLOSED position.
Cabinet Door Shut-off (M970 and M970A1).
Control lever A does not move
Ensure that all valves are closed. Open the hose
to the CLOSED position.
reel cabinet door. Move control lever A to the OPEN
position. Close the cabinet door and observe that
control lever A moves to the CLOSED position.
Brake System.
a. With towing vehicle coupled to semitrailer,
apply semitrailer brakes and inspect all air lines
and fittings for leaks.
Brakes do not stop semitrailer,
b. Apply semitrailer brakes and observe
or semitrailer pulls to one side.
operation.
c. Drain water from both air reservoirs by
opening the air reservoir drain cocks.
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