TM 9-4110-255-14
Table 4-1. Unit Preventive Maintenance Checks and Services for Model F5000RD - Continued
Location
Item No.
Interval
Procedure
Not Fully Mission Capable If:
Item to
Check/
Service
23
Semi-
Toggle Switch Inspect the toggle switch for any damageand
Toggle switch will not stay
Annually
loose or missing mounting hardware or wire
in START/RUN or OFF
leads. Inspect for smooth operation to
position or stays in
START/RUN, OFF, and GLOWPLUG positions.
GLOWPLUG position.
If damaged, or wire leads or mounting hardware
Wire leads are loose.
is loose, or operation is stiff or binding, test,
tighten, or replace as necessary (para 4-28).
24
Semi-
Circuit
Inspect the circuit breaker for any damage, secure
Circuit breaker will not
Annually
Breaker
mounting, or loose wire leads. Push to check for
stay in on position or
smooth operation to on (in, no white band
button is damaged. Wire
showing) and off (out, white band showing). If
leads are loose.
damaged, mounting loose, wire leads loose, or
operation is stiff or binding, test, secure, or
replace as necessary (para 4-21).
25
Semi-
Control Relays a.
Check for loose or missing mounting
Mounting hardware or
Annually
hardware and wire terminals. Tighten or
wire terminals are loose.
replace as necessary (para 4-24).
Case is damaged.
b.
Inspect case for cracks, breaks, or evidence of
overheating. Replace if damaged
26
Semi-
Time Delay
a.
Check for loose or missing mounting
Mounting hardware or
Annually
hardware and wire terminals. Tighten or
wire terminals are loose.
replace as necessary (para 4-25).
Case is damaged.
b.
Inspect case for cracks, breaks, or evidence of
overheating. Replace if damaged
27
Semi-
Defrost Timer a.
Check for loose or missing mounting socket
Mounting hardware or
Annually
hardware and wire terminals. Tighten or
wire terminals are loose.
replace as necessary (para 4-29).
Case is damaged.
b.
Inspect case and mounting socket for cracks,
breaks, or evidence of overheating. Replace if
damaged (para 4-29).
c.
Check and adjust the timer controls if needed
28
Semi-
Remote Bulb
a.
Check for loose or missing mounting
Sensing bulb capillary line
Annually
Thermostat
hardware and wire terminals. Tighten or
is kinked or broken.
replace as necessary (para 4-30).
Mounting hardware or wire terminals
are loose
b.
Inspect for kinked or broken sensing bulb
.
capillary line. If damaged, replace thermostat
4-25
