TM-9-2350-273-BD
M48/M60 SERIES TANK, COMBAT FULL-TRACKED 105-MM GUN
TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; BATTLEFIELD DAMAGE ASSESSMENT AND REPAIR
TM-9-2350-273-BD - Page 92 of 288
TM 9-2350-273-BD
ELECTRICAL
SYSTEM
Assessment Steps (Cont'd)
16. Disconnect pressure switch connector.
17. Check for power at socket A.
a. If power is present, go to step 18.
b. If power is not present, repair turret control wiring harness or use manual
back-up system.
18. Using ohms scale check pressure gauge (pressure below 1225 psi).
19. Check for continuity through pressure switch.
a. If present, go to procedural step 1.
b. If not present, replace pressure switch or use manual power.
Procedural Steps
1. Remove cover from turret power relay box.
2. Check continuity of power control circuit breaker across bus bars and across wire
terminals S1 and S2.
a. If present at both checks, replace power relay or use manual power.
b. If not present, go to step 3.
3. Remove one leg of power lead (CKT 100) from bus bar.
4. Connect to bus bar between defective circuit breaker and power relay.
5. Remove wire from terminal S1 and connect to terminal S2 using existing screw.
6. Record the BDAR action taken. When mission is completed, as soon as practicable,
repair tank using standard maintenance procedures.
6-11
(6-12 blank)
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