TM 5-3805-280-10
Maintenance--Every 2000 Hours
COOLING SYSTEM FILL AND DEAERATION
PROCEDURE
IMPORTANT: Use only permanent-type low silicate
ethylene glycol base antifreeze in
coolant solution. Other types of
antifreeze may damage cylinder seals.
FREEZING TEMPERATURES: Fill with permanent-type,
low silicate, ethylene glycol antifreeze (without stop-leak
additive) and clean, soft water.
FILL
Fill radiator to the bottom of the radiator fill neck.
Cooling System--Specification
Capacity...................................................................... Approx. 22 L (6 gal)
Fill the recovery tank to FULL mark.
DEAERATION
The cooling system requires several warm-up and cool
down cycles to deaerate. It will NOT deaerate during
normal operation. Only during warm-up and cool down
cycles will the system deaerate.
1. Start engine. Run engine until coolant reaches a warm
temperature.
2. Stop engine. Allow coolant to cool.
3. Check coolant level at recovery tank.
4. Repeat Steps 1--3 until recovery tank coolant level is
repeatedly at the same level (stabilized).
NOTE: The level of the coolant in the cooling system
MUST BE repeatedly checked after all drain and
refill procedures to insure that all air is out of the
system which allows the coolant level to stabilize.
Check coolant level only when the engine is cold.
5. If necessary, fill recovery tank to FULL mark.
6. Install recovery tank and radiator caps.
TX,86,DH5113
1915JUL961/1
17-3
