(c) Check engine temperature gage (7). It should show a,gradual increase in temperature
and read between 170 F. and 200 F. when engine is at normal operating temperature.
Do not attempt to operate the truck under any conditions, unless air pressure
system and warning buzzer are operating properly.
(d) Check air pressure gage (11). The air pressure warning buzzer should continue to
sound until the air pressure is above 65 psi.
Do not race engine. Never operate engine above 2,100 rpm in any gear.
If air filter indicator rises and locks in the full red position, stop engine and notify
If any unusual noises or vibrations are detected, stop engine and notify
(e) Check air falter indicator (8). It should not show red.
(13) Push hand throttle control (1) in until tachometer (6) reads 800 rpm. Release clutch
pedal and allow engine to warmup until temperature reaches 140 F.
d. Starting the Diesel Engine (Below +3F).
(2) While cranking engine, hold manifold heater switch (2) in ON position.
(3) After engine starts, return manifold heater switch (2) to OFF position.
If the engine continues to misfire after reaching normal temperatures, stop the
engine. Refer to table 3-2 for troubleshooting instructions.
If engine misfires during idling, hold manifold heater switch in ON position until
engine is running smoothly.