Operation
Tandem Axle Power Divider Lock (PDL) Control
CAUTION
Do not operate the vehicle with the PDL engaged
on dry pavement (good traction) continuously.
This will result in excessive tire wear and
premature axle wear.
Never engage the PDL when the wheels are
spinning.
The PDL should be engaged,
which prevents inter-axle
differential action, when backing under a trailer with a tractor,
starting on a slippery surface (poor traction), operating off
highway in mud, etc.
(poor traction), or when traveling on
slippery highways (poor traction).
Failure to lock the power
divider under these conditions may result in power divider
failures and costly repairs.
If you encounter wheel spin
conditions, the PDL switch should be moved to the LOCK
position.
CAUTION
Engage the PDL only when stopped or moving at
low speed. Never try to engage the PDL while the
wheels are spinning as this may result in shock
damage to the power divider components.
When encountering slippery highway conditions (poor traction),
the PDL can be engaged at a low, even speed. Momentarily
letting off the accelerator will engage the differential lock. A
warning indicator on the instrument panel indicates when the
inter-axle differential is locked.
When highway conditions improve (good traction), the PDL
should be disengaged, again at a low, even speed.
Letting
up on the accelerator momentarily will unlock the inter-axle
differential.
Tandem axle power dividers or inter-axle differentials
in the forward rear axle are controlled by the dash
mounted Power Divider Lock (PDL LOCK) switch.
The switch indicator will turn on when the PDL is
engaged (locked). The vehicle may be electronically
programmed to provide an alarm when a speed is
reached where it is not appropriate to have the power
divider locked. In this event, an alarm will sound (5 beeps) and
the switch indicator will flash slowly (once per second). A fast
flashing (twice per second) switch indicator signifies a problem
in the PDL system.
Under normal highway conditions (good traction), the PDL
should be disengaged, which allows differential action between
the forward rear axle and the back rear axle preventing inter-axle
differential wear due to unequally worn or mismatched tires, etc.
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Summary of Contents for ProStar+ Eagle Series.
Page 4: ...Operator s Manual ProStar Series Printed in the United States of America 3878859R2 ...
Page 12: ...Table of Contents Section 10 Index Index 235 viii 3878859R2 ...
Page 26: ...Model Description Exterior Components 14 3878859R2 ...
Page 28: ...Model Description 16 3878859R2 ...
Page 59: ...Controls Features 3878859R2 47 ...
Page 70: ...Controls Features Declination Zone Map 58 3878859R2 ...
Page 93: ...Controls Features Center Dash Panel Wing Panel 3878859R2 81 ...
Page 128: ...Sleeper Features 116 3878859R2 ...
Page 182: ...Operation 170 3878859R2 ...
Page 241: ...Maintenance Intervals and Specifications Typical Interior Fuse Panel Layout 3878859R2 229 ...
Page 262: ...Index 250 3878859R2 ...