Table
2-3.
Troubleshooting--Vehicle--Continued
TM 9-2320-211-20
Item
Malfunction
Probable Cause
No.
EXPANSIBLE VAN ILLUM-
INATION SERVICE AND
BLACKOUT CIRCUITS--Continued
Press the end terminals of the ceiling
75 Ceiling fluorescent tube fails to
a. Fluorescent tube terminals not
fixture together to improve contact
light.
tmaking proper contact.
with fluorescent tubes.
Replace the starter
b. Burned out starter
Replace the fluorescent tube.
c. Burned out flourescent tube.
Replace the lamp
76 Emergency light, blackout light,
Burned out lamp
and ceiling light fail to light.
EXPANSIBLE FAN
VEHICLE CLEARANCE
LIGHTS
77 Clearance lights fail to light.
Replace the lamp
a. Burned out lamps.
Check the tee connectors. Replace if
b. Damaged tee connectors.
necessary.
VAN BODY
Remove the roller and sprocket
Foreign matter in rollers or
7 8 Difficulty in expanding and
covers. Remove foreign matter.
sprockets.
retracting side panels.
Place a heavy wood block against the
79 Side panel cannot be locked in
a. Front edge of side panel not fully
rub rail at the front of the panel.
retracted.
retracted position.
Strike the block with a heavy
hammer.
Place a heavy wood block against the
b. Top of side panel too far out to
flat surface of the seal retainer
engage edge of roof.
opposite the locking bar at the top
of the side panel. Strike the block
with a heavy hammer.
Place a heavy wood block against the
80 Van body not waterproof or light-
a. Lower part of side panel not tight
rub rail at the end of the side panel
tight.
against van body.
where the leak is apparent. Strike
the block with heavy hammer.
Loosen the jam nut on the toggle
b. Toggle clamp not drawing top of
clamp eyebolt. Screw the eybolt
side panel sufficiently tight.
inward to shorten it.
Add shims of rubber seal material to
c. Sagging end panel door
the seal on the outer edge of the
hinged roof until the seal meets the
top of the end panel door.
Move the side panel out to disengage
d. Lip of block seal at inner rear
the corner block seal. Push the seal
corner of hinged roof forced out of
lip up into the correct position so
position.
the end panel door properly
engages the seal when the side
panel is retracted.
Re-cover the area with improvised
e. Loss or wear of seal at top of two
sealing material.
rear doors.
Locate the jammed lock by removing
81 Right rear and side door locks will
a. One or more lock bolts jammed.
the vertical bars and testing each
not operate.
lock. Replace the lock or locks.
b. Lock bolt fails to engage striker
Place shims under the lock until the
plate.
bolt properly engages the striker
plate.
HEATING SYSTEM
82 Heater will not ignite
a. Burned out fuel pump
Replace the fuel pump
Open the shutoff valve
b. Shutoff valve closed on gas tank.
Check and clear all fuel lines.
c. Restriction in fuel line
a. Burned out fuel pump
83 Heater stops operating
Replace the fuel pump
b. Restriction in fuel lines
Check and clear all fuel lines.
Check and clear the check valve.
c. Restriction in check valve.
d. Clogged fuel filter screen.
Clean or replace the filter screen.
EXPANSIBLE VAN AIR
CONDITIONING SYSTEM
Remove and clean filters.
84 Air conditioner fails to maintain
Dirty or clogged air filters.
proper temperature.
Open bonnet front door
Bonnet front door is closed.
85 Air conditioner compressor fails to
start.
2-19
* Refer to troubleshooting the electrical system, paragraphs 2-15 through 2-35.
