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 16 of 694
TM 5-3895372-20
2-3.
DESCRIPTION.
1.
WATER SYSTEM.
(Section III) supplies water for mixing concrete and for washing the
2.
AGGREGATE SUPPLY SYSTEM.
(Section V) includes bins for carrying sand and stone, controls and gates
for proportioning the aggregates, and a conveyor to carry dry materials to
3.
CEMENT SYSTEM.
(Section VI) stores dry cement, meters it out for concrete production, and registers the
amount of cement used.
4.
ELECTRIC WINCH.
(Section X) raises mixer trough for storage, lowers it for concrete
5.
MIXER-AUGER SYSTEM.
(Section VII) mixes aggregates, cement, and water to form concrete.
During
mixing, concrete is carried from conveyor belts to delivery chute at end of
6.
HYDRAULIC SYSTEM.
(Section VIII) hydraulic pump, driven by belts from power train, turns mixer-auger
motor.
7.
POWER TRAIN.
(Section II) driven by truck engine, through PTO.
Provides direct mechanical drive for sand
and stone conveyor, cement bin auger and meter, and dry admix auger and meter.
Belts from main drive turn
water and hydraulic pumps.
8.
LAMPS.
(Section XI) clearance lamps mark top and sides of mixer body.
9.
HI-FLOW LIQUID ADMIX SYSTEM.
(Section IV) used for adding relatively large amounts of chemical
admixtures to concrete.
Air pressure forces admixture from 42 gal (160 I) tank
10.
LOW-FLOW LIQUID ADMIX SYSTEM.
(Section IV) same as the hi-flow, except tank has smaller capacity (12
gal, 45 I).
11.
Al R SYSTEM.
(Section IX) pressurized air from chassis air system.
Powers vibrators to shake dry materials
from bins, and air pads to loosen settled cement.
Also supplies pressure to liquid admix systems.
Air hose
attachment can be used to blow water system dry in cold
12.
DRY ADMIX SYSTEM.
(Section IV) injects powdered admixtures and colorings into concrete.
2-2
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