TM-9-2320-209-20-2-1
2½-TON, 6X6, M44A1 AND M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; TROUBLESHOOTING; ORGANIZATIONAL LEVEL; VOLUME 2 OF 3; PART 1 OF 2
MAY 1981
TM-9-2320-209-20-2-1 - Page 2 of 645
WARNING
Engine cooling system runs under pressure and at very high temperatures. If filler
cap is taken off before pressure is set free, scalding coolant will blow out. Due to
high temperature of coolant bad burns can occur if contact is made with skin.
Do not touch any part of the exhaust system while engine is running. You can get
badly burned. If the engine has just been shut off, wait until the exhaust system
has time to cool down before doing any work.
Because of their higher power, 24 volt systems are more dangerous than 6 or 12 volt
systems. Do not let a hot wire touch metal parts of the truck at any time. Flash
testing by striking a hot wire against a ground will cause an arc that can destroy the
lead connector and possibly the lead itself.
Accidental contact of metal tools between positive (+) battery or starter terminal will
cause burns on the hand, damaged tools, truck electrical components and batteries.
The battery can explode spraying acid and sharp fragments that can cause serious or
fatal injuries.
Only properly trained personnel should perform test on 115 volt system. The voltage
present in 115 volt system can cause severe or fatal electric shock.
Take off battery ground cable before working near or touching fan. This will make
sure that the engine will not be started by accident.
Use a rag when touching fan
blades because edges on blades can cause cuts.
Eye shields must be worn when using compressed air. Eye injury can occur if eye
shields are not used.
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