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 TM 55-1905-223-24-16
Table 2-2. Troubleshooting
Malfunction
Test or Inspection
Corrective Action
STEP 2. Check for defective hydraulic pump (Item 4, PMCS Table).
Replace hydraulic pump (para. 2-17).
3. Erratic pressure in hydraulic system.
STEP 1. Check for air in hydraulic system.
Bleed air from system and secure connections (para.
STEP 2. Faulty relief valve.
Replace relief valve (para.
STEP 3. Check for contamination in hydraulic fluid.
a. Clean or replace suction strainer or filter (para 2-17).
b. Change hydraulic fluid (Item 15, PMCS).
STEP 4. Check for defective hydraulic pump or motor assembly (Items 4 and 18 PMCS Table).
Replace hydraulic pump or motor assembly (para.2-17, 2-15).
4. Excessive pressure in hydraulic system.
STEP 1. Check for misadjustment of pressure relief valve (2900 psi).
Adjust pressure relief valve (para.
5. Excessive temperature in hydraulic system.
STEP 1. Check to see if hydraulic system pressure is too high.
Adjust pressure setting of relief valve (para.
STEP 2. Check for cavitation (vacuum in hydraulic fluid).
a. Clean or replace air breather filter (para. 2-17).
b. Clean or replace suction strainer or filter (para. 2-17).
STEP 3.
Check for air in hydraulic system.
a.
Secure hydraulic fittings.
b.
Bleed air from hydraulic system (para. 2-13).
c.
Make sure hydraulic fluid level is at full mark.
STEP 4. Check to see if hydraulic fluid level is low.
a. Add hydraulic fluid (para. 2-6).
b. Secure hydraulic fittings.
STEP 5. Check for contamination in hydraulic fluid.
a. Clean or replace suction strainer or filter (para. 2-17).
b. Change hydraulic fluid (Item 15, PMCS Table).
STEP 6. Check for defective hydraulic pump (Item 4, PMCS Table).
Replace hydraulic pump (para. 2-17).
2-18
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