TM 552210-223-12
TO 45A2-2-14-41
Table 4-1. Unit Preventive Maintenance Checks and Service(Continued)
W -
Weekly
M -
Monthly
Q - Quarterly
INTERVAL
ITEM
ITEM
TO BE
NO. W
M
Q
INSPECTED
PROCEDURES
15
Sand Control-
a.
Inspect sand controllers for broken
lers and
welds and cracks. Make sure valves
Sander Control
are mounted securely.
Valves
b.
Remove bottom plug and the quick-
disconnect flange and clean the interior.
c.
Inspect sander control valves for proper
operation.
d.
Clean the sander control valve by
pushing the automatic cleanout jets.
16
Brake System
a.
Check brake system valves and gages for
Valves and Gages
proper operation and security of
mounting.
b.
Check independent and automatic brake
valve handles.
17
Air Hoses and
Inspect air hoses and fittings for breaks,
Fittings
cracks, or damage. Check for leakage and
tighten fittings as required.
18
Jumpers and
a.
Check jumpers for breaks and frayed
Receptacles
wires and for loose connections.
b.
Check receptacles for cracks, breaks,
and damage. Check terminals for
corrosion and loose contacts. Check
covers and springs for damage.
19
Resistors and
Inspect resistors and shunt devices for
Shunt Devices
broken porcelain, loose connections, and
open or touching resistance elements.
20
Shutter
a.
Check for clogged and sprung shutters
Assembly
and worn linkage. Lubricate in
accordance with LO 55-2210-223-12.
b.
Check shutters for freedom of action by
opening and closing manually.
4-5
