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 15. Check filter screens in oil reservoir (fig 4-1).
a.
If filter screens are clogged, clean screens (fig 4-1).
b.
If filter screens are not clogged, replace hydraulic pump (para 4-76).
Step 16. Replace indicator lamp. Check operation of indicator.
a.
If indicator now illuminates properly, discard defective lamp.
b.
If indicator does not illuminate properly, proceed to step 17.
Step 17. Remove lamp from hydraulic pump indicator. Disconnect lead assembly 10951612 connector from
HYDRAULIC PUMP switch. Check resistance to ground at lead assembly 10951612 switch connector.
a.
If resistance is less than 8 ohms, proceed to step 18.
b.
If resistance is more than 8 ohms, proceed to step 24. v
Step 18. Disconnect lead assembly 10951611 from magnetic clutch.
Check resistance to ground at lead
assembly 10951612 switch connector.
a.
If resistance is infinite, replace magnetic clutch (para 4-67).
b.
If resistance is less than 8 ohms, proceed to step 19.
Step 19. Disconnect lead assembly 10951612 from hydraulic pump indicator. Check resistance to ground at lead
assembly 10951612 switch connector.
a.
If resistance is infinite, replace lamp assembly (para 4-90).
b.
If resistance is less than 8 ohms, proceed to step 20.
Step 20. Disconnect lead assembly 10951611 from vehicle harness assembly. Check resistance to ground at
lead assembly 10951612 switch connector.
a.
If resistance is infinite, repair or replace lead assembly 10951611 (para 4-94).
b.
If resistance is less than 8 ohms, proceed to step 21.
4-72