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 22 of 120
TM 5-3895-372-34
Table 2-2.
Troubleshooting Procedures (Continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
12.
HYDRAULIC MOTOR LEAKS (Continued):
Step 4.
Check for faulty seal around coupling shaft.
Disassemble motor and replace seal (para 3-18 and 3-19).
Step 5.
Check for worn coupling shaft or seal.
Disassemble motor.
Replace shaft and seal as required (para 3-18 and 3-19).
13.
HYDRAULIC MOTOR SLOWS GREATLY UNDER LOAD:
Step 1.
Check oil supply.
Adjust or replace relief valve.
(Refer to TM 5-3895-372-20.) Check that oil type is
right for climate.
(Refer to LO 5-3895-372-12.) Repair worn pump (para 3-6 thru
3-8).
Step 2.
Check for leakage inside motor.
Replace worn rotor set (para 3-17 thru 3-19).
14.
LOW MECHANICAL EFFICIENCY UNDULY HIGH PRESSURE REQUIRED FOR OPERATION
OF HYDRAULIC MOTOR:
Step 1.
Check for blocked oil line.
Replace blocked oil line.
Step 2.
Check clearance of rotor set.
Replace worn rotor set (para 3-17 thru 3-19).
15.
WINCH GEAR BOX LEAKING OIL:
Step 1.
Check mounting bolts and filler plug for looseness.
Tighten as necessary.
Step 2.
Check gasket and oil seal in gear box for wear or damage.
Replace as required (para 4-8 and 4-9).
2-9
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