Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...
Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...
Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Before Stopping The Engine<br />
PART 7: STARTING & OPERATING THE VEHICLE<br />
WARNING!<br />
• In an emergency, the retarder might not stop<br />
you fast enough to prevent an accident. You<br />
could be badly hurt if you relied only on your<br />
retarder. Use the service brakes for quick<br />
stops. The retarder is not an emergency<br />
brake.<br />
• The retarder is NOT intended as the primary<br />
brake for the vehicle, nor is it an emergency<br />
brake. The retarder only helps the service<br />
brakes by using pressure to slow the drivetrain.<br />
Use the service brakes for quick stops.<br />
• The service brakes must be used in an emergency.<br />
The retarder alone might not stop<br />
you fast enough to prevent an accident. You<br />
could be badly hurt if you relied only on the<br />
retarder.<br />
• Do not use the retarder when operating on<br />
road surfaces with poor traction (such as<br />
wet, icy, or snow covered roads or gravel).<br />
Retarders can cause the wheels to skid on<br />
a slippery surface. You could lose control<br />
of the vehicle if the wheels begin to skid,<br />
resulting in an accident.<br />
Driving Bobtail or with an Unloaded Trailer<br />
We recommend that you do not use your engine retarder<br />
to slow down when you are bobtailing or pulling an empty<br />
trailer.<br />
WARNING! Using an engine retarder can cause<br />
a wheel lockup. The trailer is not loading the<br />
tires enough to give the traction you may need.<br />
When you are bobtail or unloaded, you can have<br />
a serious accident if your wheels lock suddenly<br />
during braking. You could be injured. Don’t use<br />
your retarder when you are driving bobtail or<br />
with an unloaded trailer.<br />
Stopping The Engine<br />
Before Stopping The Engine<br />
A hot engine stores a great amount of heat. And it doesn’t<br />
cool down immediately <strong>after</strong> you shut it off. Always cool<br />
your engine down before shutting it off. You will greatly increase<br />
its service life. Idle the engine at 1000 RPM for five<br />
minutes. Then low idle for thirty seconds before shutdown.<br />
This will allow circulating coolant and lubricating oil to carry<br />
away heat from the cylinder head, valves, pistons, cylinder<br />
– 98 – Y53-6015 R(08/<strong>07</strong>)
Change language