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 298 of 694
TM 5-3895-372-20
Table 7- 1.
Aggregate Supply System Troubleshooting Procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3.
CONVEYOR BELT IS TORN OR DAMAGED (Continued):
Step 8.
Check for bridging or arching in sand and stone bins.
Use clean aggregates for good quality.
(See TM 5-3895-372-10).
4.
SAND OR STONE DROPS ON GROUND BENEATH CONCRETE MOBILE DURING MIXING.
Step 1.
Check for 1/16 in.
(1.59 mm) clearance between metal guides and top of belt.
Adjust metal guides (para 7-10).
Step 2.
Check that rubber guides touch belt.
Adjust rubber guides (para 7-9).
Step 3.
Check that belt wiper is funneling all material into chute.
Adjust wipers (para 7-11 and 7-12).
5.
SAND OR STONE CONTROLS OUT OF ADJUSTMENT:
Step 1.
Check that drilled holes on shaft handwheels and pointer collars are aligned.
(See TM 5-3895-372-10).
a.
Loosen collar set screw.
b.
Align holes.
c.
Tighten set crew.
Step 2.
Use Gate Opening Gage to check sand and stone gate openings (See TM 5-3895-372-
10).
Gates should be open 3 in.
(76 mm) when dials read 6.4 + 0.2.
Adjust gate openings.
Step 3.
Check universal joints for:
a.
Looseness.
b.
Breakage.
c.
Alignment of drill holes.
Tighten,
align,
or replace universal joints (para 7-18).
7-6
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