21
2009
K
night
Chassis Information - 1
0
The U-Joint working angle is the angle
formed by the intersection of the driveshaft
centerline and the extended centerline of the
shaft of any component to which the U-joint
connects. Because the double oscillating
motion of a U-joint that connects angled shafts
causes a fluctuating speed difference between
the shafts, the effect created by the U-joint
at one end of the shaft must cancel the effect
created by the U-joint at the other end. This
is done by making U-joint working angles at
both ends of the driveshaft about equal, with
the U-joints in phase. If the yoke lugs at both
ends of the shaft are lying
in the same plane (a plane
which bisects the shaft
lengthwise), the U-joints
will be in phase.
Any condition which
allows excessive
movement of a driveshaft
will cause driveline
imbalance: loose end yoke
nuts, loose U-joint bearing
cap retaining capscrews,
worn U-joint trunnions,
bearings and worn slip-
joint splines.
Among the most
common causes of U-joint
and slip joint damage
is lack of lubrication.
To keep the motorhome
operating smoothly
and economically, the
driveline must be carefully
checked and lubricated at
regular intervals.
SHOck ABSORBER
The shock absorber is a hydraulic
device used to dampen suspension/
body movement. Road surface
irregularities are compensated for by
the shock absorber. The Roadmaster
chassis incorporates the shock in
the design of the exclusive air glide
suspension system. This shock
absorber is a telescopic, mono tube unit
filled with nitrogen gas and hydraulic
oil. The result of the mixture is
uninterrupted damping for the smallest
of wheel deflection.
By design, a self lubricating seal is
used which will allow approximately
10% of the
total oil capacity to pass onto
the piston rod. The gradual process of oil
loss does not affect the performance of the
shock absorber during the service life. This
process will be evident after a long period
of service by an oil film on the body of the
shock absorber. The appearance of a coating or
film on the body or rod is completely normal,
it is an indication the shock is functioning
normally.
Road holding, handling, balance and braking
characteristics all can be contributed to the
shock absorber. The operating conditions for
which the shock absorber must endure will
determine the life span. However, since the
only moving part is the piston rod, there are no
springs, hinges or pins to wear out, get weak or
deteriorate.
090336
090337
090417b
090315
Summary of Contents for 2009 Knight
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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...
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Page 260: ...256 2009 knight Index Notes...