Monaco 2008 Knight, Руководство пользователя

Страница: 209 / 246

2 0 0 8 K n I G h t
chassIs InformatIon — 10
20
2. With finger, cover the rear air hole so
grease flows to the front seal. Apply the
specified grease at the grease fitting on
the slip yoke. Apply until new grease
purges and forces finger away from the
air hole in the end of the slip yoke.
WARNING
Rotating
shafts can be
dangerous.
Rotating
shafts can
snag clothes,
skin, hair, hands, etc. causing serious
injury or death. DO NOT work on or
near a shaft with or without a guard
when the engine is running.
U-Joint Angles Phasing & Driveline Balance
Correct U-joint working angles, U-joint
phasing, and driveline balance is vital to
maintaining a quiet-running drivetrain and
long life of drivetrain components (including
driveline components).
When in phase, the slip yoke lugs (ears) and
tube yoke lugs (ears) are in line. Normally this
is the ideal condition and gives the smoothest
running shaft. There may be an alignment arrow
stamped on the slip yoke and on the tube shaft
to assure proper phasing when assembling these
components. If there are no alignment marks,
they should be added before disassembly of the
shaft to assure proper reassembly.
Phasing is relatively simple on a two-joint set.
Be sure the slip yoke lugs and the tube yoke lugs
are in line.
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.
090336
090337