211
2009
K
night
Chassis Information - 1
0
ATC Switch:
Activating the ATC switch reduces ECU
control over engine torque. Momentarily
pressing the ATC switch allows the ECU to
increase the amount of engine torque applied
to the drive wheel in an ATC event. The
amount of engine torque applied to the drive
wheel will vary with the amount of drive
wheel slip versus road speed. In an ATC event,
the ECU remains active regardless of road
speed or switch position. The light flashes
slowly when the ATC switch is activated.
ATC Indicator Light:
During normal operation, the
ATC indicator light on the dash
will illuminate steady when the
ignition key is turned ON. If an
ATC event occurs, the indicator
light will flash quickly. The
indicator light will flash slowly
if the ATC switch is activated.
CAUTION
Normally the switch should remain
inactive. During an ATC event (drive
wheel slip) the ECU will automatically
optimize drive wheel traction in most
situations. Activating the switch during
periods of wheel slip can increase
torque to the spinning drive wheel.
Drive train damage can occur if the
spinning drive wheel should suddenly
regain traction. If the motorhome is
stuck it is advised to call a professional
towing company to limit the possibility
of body and drive train damage.
FRONT AxLE
While driving the motorhome, be aware of
any changes in the feel of steering and have
the system checked when noting apparent
differences. It is normal to hear some hydraulic
noise from the steering, especially when the
steering is at maximum, or while turning
the wheel when the motorhome is parked.
Investigate any unusual or loud noises that
occur. Begin by checking the level of the
hydraulic fluid. Traveling at slow speeds over
rough surfaces may cause a “clunking” noise
to emanate from the steering column, but
if noise is heard on smooth surfaces while
sharply turning back and forth, the noise
should be inspected and repaired as necessary.
Shimmy and looseness should be checked
and corrected as soon as possible. If looseness
is felt in the steering, the steering linkages can
be observed while someone turns the steering
wheel left and right. Watch the linkages for
evident play or uneven interaction between
components to help pinpoint a problem. Wheel
bearings should be cleaned and repacked
with high temperature disc brake grease
every 30,000 miles. Have the steering system
checked for damage after a severe impact, such
as striking large potholes or curbs, and front-
end collisions. Observe the alignment of the
steering wheel; a change in the alignment may
indicate damage to the steering components or
suspension.
Maintenance for the system entails adequate
lubrication. Use only a hand operated grease
gun on the fittings. Grease fittings for the
steering system are found on the both ends of
the drag link (the bar connecting the steering
gear to the axle), and on the intermediate
steering shaft located between the steering
wheel and steering gear. The correct wheel
alignment promotes longer tire wear and ease
of handling while minimizing the strain on the
steering system and the axle components. Use
NLGI #2 Lithium soap base lubricant for all
steering linkage and brake components.
Alignment
Camber:
Camber, as shown, is vertical tilt of wheel as
viewed from the front of the motorhome. This
is machined into the axle when manufactured
and is not adjustable.
“Positive”
camber is an outward tilt of the
wheel at the top.
“Negative”
camber is an inward tilt of the
wheel at the top.
Toe Setting:
The toe setting represents
different distances between the front and rear
of the tires (measured at the vertical center line
of the tires).
Toe-in:
Occurs when the tire front distance is
less than the tire rear distance.
Toe-out:
Occurs when the tire front distance
is greater than the tire rear distance.
080498y
Located on
driver’s console
090267
Summary of Contents for 2009 Knight
Page 12: ......
Page 14: ......
Page 16: ......
Page 46: ...42 2009 knight Driving Safety 2 Weighing Procedure Worksheet Example Worksheet 020255b conv...
Page 47: ...43 2009 knight Driving Safety 2 Weight Record Sheet Actual Worksheet 020255b 020263...
Page 52: ...48 2009 knight Driving Safety 2 Notes...
Page 152: ...148 2009 knight Water Systems 6 Notes...
Page 182: ...178 2009 knight Electrical Systems House 8 Notes...
Page 201: ...197 2009 knight Electrical Systems Chassis 9 engine no start flow chart...
Page 202: ...198 2009 knight Electrical Systems Chassis 9 Notes...
Page 251: ...247 2009 knight Chassis Information 10...
Page 260: ...256 2009 knight Index Notes...