TM-5-3895-372-34
CONCRETE-MOBILE MIXER BODY M919, MODEL 8CM-24/F
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
SEPTEMBER 1980
TM-5-3895-372-34 - Page 17 of 120
TM 5-3895-372-34
Table 2-2.
Troubleshooting Procedures
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1.
HYDRAULIC OIL PUMP IS LEAKING OIL:
Step 1.
Check for seal breakdown.
Replace the seal (para 3-6).
Step 2.
Check for porosity in pump body and cover.
Replace the pump body and cover (para 3-6).
Step 3.
Check for seal damage between the pump body and cover.
Replace the shaft seal (para 3-).
2.
HYDRAULIC OIL PUMP IS LEAKING OIL AT FITTINGS:
Step 1.
Check for damaged flange or fittings.
Replace the flange or fittings (para 2-13).
Step 2.
Check for damaged flange threads.
Replace flange (para 2-13).
Step 3.
Check the O-ring seal for damage.
Replace the O-ring seal (para 2-13).
Step 4.
Check for burr on mating surfaces.
Remove the burr (para 2-13).
3.
HYDRAULIC OIL PUMP IS NOT DELIVERING OIL:
Step 1.
Check for proper priming.
Bleed air from system.
Step 2.
Check the hydraulic fluid level.
If too low, add fluid.
(Refer to LO 5-3895-372-12.)
Step 3.
Check for air leakage in suction line.
Tighten and seal connections.
Replace seals (para 2-13).
2-4
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