TM-9-2320-273-20
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; ORGANIZATIONAL MAINTENANCE
NOVEMBER 1980
TM-9-2320-273-20 - Page 6 of 1500
TM 9-2320-273-20
COOLING FAN
When working in the engine compartment with the engine running, stay clear of the cooling fan. The
fan may engage automatically at any time and could cause serious injury.
PUSHER AXLE (M917, M919, AND M920)
When the pusher axle is in the up position it freewheels. DO NOT USE THE PUSHER AXLE AS A
STEP. You can fall and be injured. Always lower the pusher axle when the vehicle is parked.
FILLING THE RADIATOR
Let the radiator cool before removing cap. Remove radiator cap in two steps. First, place a thick cloth
over the cap and slowIy rotate cap left to its first stop; pause, and let pressure escape from cooling
system. Then rotate cap farther left until you can remove it. Failure to follow this procedure can re-
sult in serious burns.
LIFTING THE TRUCK
Improper use of lifting equipment and attachment of cables to the truck can result in serious person-
nel injury and equipment damage. OBSERVE ALL STANDARD RULES OF SAFETY.
HOOD SAFETY LATCH
After raising hood, insert the S-shaped safety hook through two matching holes in the prop channels
to prevent the hood from falling accidentally.
EXHAUST PIPE AND MUFFLER
During normal operation the exhaust pipe and muffler can become very hot. Be careful not to touch
these components with your bare hands. Do not allow your body to come in contact with the pipe
or muffler. Exhaust system components may be hot enough to cause serious burns.
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