TM-5-3895-372-20
CONCRETE-MOBILE MIXER BODY M919, MODEL 8CM-24/F
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE MANUAL
AUGUST 1980
TM-5-3895-372-20 - Page 541 of 694
TM 5-3895-372-20
Table 11-1.
Air System Troubleshooting Procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. CEMENT IN BIN IS NOT PROPERLY AERATED (Continued):
b. Actuate air pads.
1.
If filter cloth is torn, you will see a blast of air.
2.
If filter cloth is clogged, no air action will be visible
3.
If filter cloth is in good condition, you will see gentle puffs of cement.
Replace tom or clogged filter cloth (para 8-11).
Step 4.
Open draincocks of truck air reservoirs (see TM 9-2320273-20) and mixer body moisture trap.
Check for
moisture in air system.
Drain completely, then close cocks.
3. VIBRATORS DO NOT FUNCTION PROPERLY:
Step 1.
Check that air pressure is above 65 psi (448 kPa).
Refer to Malfunction No.1.
Step 2.
Check that lubricator bowl is full of oil.
Fill lubricator (see TM 5-3895-372-10).
Step 3.
Check for a fine mist of oil at the vibrators as they are operated.
If there is no mist, replace lubricator.
Step 4.
Check for cam follower clearance of 1/16 in.
(1.6 mm) (para 11-10).
Adjust timing device.
Step 5.
Open draincocks of truck air reservoirs (see TM 9-2320-273-20) and mixer body moisture trap.
Check for
moisture in air system.
Drain completely, then close cocks.
Step 6.
Use soap solution to check for air line leaks.
Replace leaking lines.
11-4
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