TM 9-2350-230-12. C11
Table 5-1. Troubleshooting-Continued
Malfunction
Probable causes
Corrective action
BILGE PUMP
15 Bilge pump does not operate
a. Vehicle MASTER SWITCH off
a. Turn MASTER SWITCH on (fig 2-10).
with bilge pump switch
b Loose electrical leads at circuit
b. Inspect and tighten connectors if requited.
turned on
breaker, relay, or switch panel
152tM GUN-LAUNCHER
16 Failure to fire conventional
Defective ammunition or electrical
Refer to immediate action in case of
ammunition or missile
malfunction
failure to fire (table 3-1).
(READY lamps on ).
17 Failure of loader's control
a. READY lamp defective
a. Press to test lamp and replace if in-
box or reticle dimmer box
READY lamps to illuminate
b. Recoil mechanism pressure too
b. Adjust pressure (fig 3-2).
high or too low.
c. Gun out of battery
c. Check safe-to-fire indicator rod
required.
17.1
Smoke and fumes discharging
Erosion past firing probe
Notify organizational maintenance.
from cover of breech.
17.2.
Smoke and/or flame discharging
Malfunctioning seal; erosion or corrosion
Notify supporting maintenance.
from tube lock key or detent
of detent assembly or cannon
assembly vent
detent hole.
152MM GUN-LAUNCHER MOUNT
18. Breech chamber will not rotate
a. Obstruction or foreign material
a. Manually open breech and remove
into fully closed position
between buttress threads or between
obstruction or foreign material.
chamber and tube face.
b. Foreign material inside of breech
b. Manually open breech and clean Interior
chamber
of breech chamber. Check
operation of scavenging system.
19. Replenisher hand pump does
Insufficient fluid in reservoir
Replenish reservoir (Fig. 3-2) and
not increase recoil
check for excessive recoil oil leak- age.
mechanism pressure
30. Gun-Launcher returns to
Insufficient fluid in counter-recoil buffer.
Add fluid (Fig. 5-9).
battery with excessive force
GUN-LAUNCHER ELEVATING AND
TURRET TRAVERSING SYSTEMS
21. Excessive effort required to
a. Excessive load due to binding or
a. Remove obstruction.
manually elevate or depress
obstruction in shield area or gear
box.
b. Contaminated lubricant on elevating
b. Clean and lubricate (LO 9-2350-230-12).
mechanism pivots.
22. Elevating system electric
a. Vehicle MASTER SWITCH not on
Turn MASTER 8WITCH on(Fig. 2-10).
drive inoperative with palm
switch depressed
b. TURRET CONTROL POWER switch
b. Turn POWER switch on (Fig. 2-19).
not on.
c. Loose electrical connectors
c. Tighten electrical connectors.
23. Creeps excessively, after war
Elevation and/or azimuth trim buttons
Adjust gunner's and/or commander's
up, in elevation, depression,
out of adjustment
trim button (Figs. 2-19, 21).
and azimuth with control
handles In neutral position.
24. Excessive "dead" space in
a. Excessive load, due to binding or
a. Remove obstruction.
either control handle when
obstruction in shield area.
elevating or depressing.
b. Contaminated lubricant on elevating
b. Clean and lubricate (LO9-2350-230-12)
mechanism pivots.
24. 1. Palm switch energized with-
Dirt collected under heel of palm
Depress palm switch and remove dirt
out being depressed
switch
with thin bladed tool
5-3