TM 9-2320-289-20
1-18.
COOLING SYSTEM.
a. Cooling System. Engine is liquid-cooled by means of coolant flow through radiator and
hoses.
b. Thermostat. Located in coolant crossover pipe.
Designed to open and close at
predetermined temperatures to supply correct engine operating temperature.
c. Engine and Transmission Lubricating Oils.
Temperature-controlled in separate
coolers of radiator.
d. Coolant Flow. The following illustration shows flow of coolant from radiator to engine.
1-19.
ELECTRICAL SYSTEM.
a. 28 v Charging System. Includes alternators and regulators to maintain a proper state of
charge on both batteries.
b. Standard System. 100 amp, 12/24 v electrical system. includes two 12 v batteries
(Delco 1200 or military-type 6TN) in series and two 100 amp alternators (Delco 27-S1).
c. M1010 Ambulance and Selected M1028 System. 200 amp, 12/24 v system, using 2
batteries (Delco 1200 or military-type 6TN) and 2 Leece/Neville alternators,
d. Starting Motor. Heavy-duty 24 v 27MT starting motor, with increased strength pinion
and ring gear teeth.
TA49622
1-14
