PART 7: STARTING & OPERATING THE VEHICLE
TRANSMISSION WARMUP
(05/10)
Y53-6032
– 97 –
NOTES:
• Keep the engine exhaust system and the vehi-
cle’s cab/sleeper ventilation system properly
maintained. It is recommended that the vehi-
cle’s exhaust system and cab/sleeper be
inspected
– By a competent technician every 15,000 miles
– Whenever a change is noticed in the sound of
the exhaust system
– Whenever the exhaust system, underbody, cab
or sleeper is damaged
• Do not stay in the vehicle with the engine run-
ning or idling for more than 10 minutes with the
vehicle’s Heater and A/C ventilation system in
RECIRC or at LOW FAN SPEED. Even with the
ventilation system On, running the engine while
parked or stopped for prolonged periods of
time is not recommended.
• If other vehicles are parked next to you idling,
move your vehicle or do not stay in your vehicle
for prolonged periods of time.
Transmission Warmup
In cold weather you may find shifting sluggish when you
first start the engine. Transmission warmup is especially
important at this time, but it is always a good idea to warm
up your transmission before starting out on the road. To
warm up the transmission lubricating oil during engine
warmup, with a single transmission:
• Check that the transmission is in Neutral.
• Release the clutch pedal.
If you have a two-transmission combination:
• Put the main transmission in gear.
• Put the auxiliary transmission in Neutral. This will
allow the transmission countershaft to turn, agitating
the oil and warming it.
Idling the Engine
Under most circumstances, idling your engine for long
periods merely wastes fuel. In severe arctic weather con-
ditions, however, you may need longer idling to be sure all
parts of your engine are fully lubricated.
Y53-6032.book Page 97 Monday, May 24, 2010 3:37 PM
Summary of Contents for Peterbilt 587
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