TM 5-3805-260-10
When Required
1.
Open the hood. Remove the radiator cap slowly to
relieve pressure.
3.
Close the drain valve. Follow procedures in TB
750-651 for cleaning radiator and replacing coolant.
Use all cleaning solutions with care.
NOTE
Most commercial cooling system cleaners may be
used.
4.
If commercial cleaner is used, follow these steps.
a.
Close the drain valve. Fill cooling system with
cleaning solution.(1)
b.
Start and operate the engine for 1/2 hour.
Stop the engine and drain the cleaning solution.
c.
Flush the system with clean water until the
draining water is clear. Do not operate the engine
while flushing.
d.
Close the drain valve. Fill the system with
neutralizing solution(2)
e.
Start and operate the engine for 10 minutes.
Stop the engine and drain the neutralizing solution.
f.
Flush the system with clean water until the
draining water is clear. Do not operate the engine
while flushing.
2.
pen the radiator drain valve. Allow the coolant to
drain.
g.
Close the drain valve.
5.
Mix antifreeze solution to provide protection to the
lowest expected outside temperature, per TB 750-651.
6.
To avoid air locks, add coolant slowly at 5 U.S.
gallons (19 litres) per minute or less. See Refill
Capacities (page 2-9).
7.
Start and operate the engine, with the radiator cap
removed. Allow the coolant level to stabilize. Add
coolant, if necessary, to bring the coolant level to within
1/2 inch (1 cm) of the bottom of the fill pipe.
8.
Replace the radiator cap if the gasket is damaged.
Install the cap.
2-57
WARNING
