Run engine for 25 minutes.
Refer to TM 9-2320-209-10.
Do not take off filler cap (1) before pressure has been
let out. Pressure will blow out scalding fluid and vapor.
Personnel can be badly burned.
Put heavy cloth over radiator filler cap (1). Press down and turn filler cap
slowly to the left to the first stop. Let all pressure out of cooling system.
Press down and turn filler cap (1) all the way to the left and lift it off.
GO TO FRAME 3