TM-9-2350-311-34-2
CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS HOWITZER, MEDIUM, SELF-PROPELLED, 155MM
TECHNICAL MANUAL; DIRECT AND GENERAL SUPPORT MAINTENANCE MANUAL
SEPTEMBER 1994
TM-9-2350-311-34-2 - Page 82 of 552
TM 9-2350-311-34-2
2-22
QUICK GUIDE TO TROUBLESHOOTING - CONTINUED
2-22.4
Quick Guide to Troubleshooting List - Continued
ITEM
SYMPTOM
PARAGRAPH
CAB HYDRAULIC SYSTEM
POWER PACK HYDRAULIC PUMP MOTOR DOES NOT OPERATE,
BUT CAB LIGHTING SYSTEM OPERATES NORMALLY.
Replace direct current motor of power pack assembly.
HYDRAULIC PRESSURE IS NORMAL, BUT HYDRAULIC POWER
IS NOT BEING SUPPLIED. Inspect and repair spools and sleeves of
cover assembly.
HYDRAULIC FLUID OVERFLOWS FROM TOP OF SIGHT GAGE
OR CONTAMINATED CRYSTALS IN HYGROSCOPIC BREATHER.
Repair or replace main accumulator assembly.
HYDRAULIC PUMP MOTOR ON/OFF CYCLE IS RAPID.
MAIN ACCUMULATOR WILL NOT HOLD DRY NITROGEN CHARGE.
Repair or replace main accumulator assembly.
GUNNER’S OR ASSISTANT GUNNER’S CONTROL HANDLE
DOES NOT RETURN TO NEUTRAL POSITION WHEN RELEASED.
RAMMER HYDRAULIC
SYSTEM
PANORAMIC TELESCOPE
BALLISTIC COVER
RAMMER DOES NOT OPERATE PROPERLY. Inspect and repair
rammer cylinder assembly.
EXTREME EFFORT REQUIRED TO TRAVERSE PANORAMIC
TELESCOPE BALLISTIC COVER. Check brakes for proper operation.
Clean and inspect bearing balls. Replace as necessary.
6-1
6-2
6-7
2-23e.(1)
6-7
2-23e.(2)
7-2
Chapter 13
2-20
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