TM 9-2590-209-14&P
Table 4-2. Troubleshooting - Continued
MALFUNCTION
TEST OR OPERATION
CORRECTIVE ACTION
5.
BLADE ASSEMBLY FAILS TO OPERATE - CONTINUED.
Step 21. Disconnect lead assembly 10951612 from vehicle harness assembly at bulk-head. Check resistance to
ground at lead assembly 10951612 switch connector.
a.
If resistance is infinite, repair or replace vehicle harness assembly (para 4-94).
b.
If resistance is less than 8 ohms, repair or replace lead assembly 10951612 (para 4-94).
Step 22. Disconnect lead assembly 10951611 from vehicle harness assembly. Check vehicle harness assembly
connector for 24 vdc between connector and ground.
a.
If 24 vdc is present, proceed to step 23.
b.
If 24 vde is not present, repair or replace lead assembly 11951611.
Step 23. Disconnect lead assembly 10951612 from vehicle harness assembly at bulk- head. Check for 24 vdc at
pin E of bulkhead connector to ground.
a.
If 24 vdc is present, repair or replace vehicle harness assembly (para 4-94).
b.
If 24 vdc is not present, repair or replace lead assembly 10951612 (para 4-94).
Step 24. Disconnect lead assembly 10951612 from HYDRAULIC PUMP switch.
Check HYDRAULIC PUMP
switch for 24 vdc between switch connector and ground.
a.
If 24 vdc is present, repair or replace lead assembly 10951612 (para 4-94).
b.
If 24 vdc is not present, proceed to step 25.
Step 25. Disconnect lead assembly 10951610 from HYDRAULIC PUMP switch.
a.
If 24 vdc is present, replace HYDRAULIC PUMP switch (para 4-90).
b.
If 24 vdc is not present, proceed to step 26.
Step 26. Disconnect lead assembly 10951610 from hydraulic pump circuit breaker. Check connector on circuit
breaker for 24 vde to ground.
a.
If 24 vdc is present, repair or replace lead assembly 10951610 (para 4-94).
b.
If 24 vde is not present, proceed to step 27.
4-73