TM 5-3825-230-14&P
Table 4-3. Unit Troubleshooting - CONT.
Malfunction
Test or Inspection
Corrective Action
SPRINKLER SYSTEM (CONT)
3. LOW SPRINKLER FLOW AND PRESSURE (CONT).
Step 4. Check for punctured pump diaphragm.
Replace pump or repair diaphragm as necessary (para 4-120).
Step 5. Check for defective pump motor.
Replace as necessary (para 4-120).
Step 6. Check for insufficient voltage to pump.
Troubleshoot battery (see electrical system troubleshooting).
HYDRAULIC SYSTEM
NOTE
Refer to Appendix H for hydraulic schematic to aid in troubleshooting.
1. BROOM OR LIFT DOES NOT OPERATE.
Step 1. Check fluid level in hydraulic reservoir (para 3-13).
If fluid is low identify source of leak and repair.
If unit does not operate with full fluid level replace hydraulic pump (para 4-101).
2. BROOM MOTOR WORKS BUT LIFT DOES NOT, OR LIFT WORKS BUT BROOM MOTOR DOES NOT.
Step 1. Check fluid level in hydraulic reservoir (para 3-13).
If level is ok go to step 2.
If not, fill to operating level and test operation.
Step 2. Switch hydraulic lines at valve and check operation.
If component now operates, replace hydraulic control valve (para 4-103).
If component does not operate, replace component not operating.
4-15
