TM 9-2320-272-10
2-45.
ENGINE COOLANT HEATER KIT (Contd)
CAUTION
Take care not to accidentally close coolant shutoff valves. During arctic
operations, all coolant shutoff valves must remain open at all times.
(d)
Do not close coolant shutoff valves (5) and (6) during any arctic operation.
2-237
