chassIs InformatIon — 10
20
2 0 0 8 K n I G h t
Proper Drive Axle Lubricant Level:
With the motorhome parked on a level
surface and rear axle warm, place a large
container under axle.
Clean the area around the fill plug, which
is located approximately halfway up the
axle housing bowl.
Remove the fill plug and observe the
lubricant level.
The lubricant
should be level with
bottom of the hole.
Important: The lube
level close enough
to the hole to be
seen or touched is
not sufficient. The
lube must be level
with the hole.
Correct the level as
necessary.
Re-install the fill
plug and tighten to
35 to 50 ft. lbs.
To Drain and Replace Lubricant:
1. Place a large container
under the axle.
2. Remove drain plug and
allow axle to completely
drain.
3. Properly dispose of oil.
4. Clean the drain plug and test
(replace the drain plug if needed).
5. Install and tighten drain plug to 35 to
50 ft. lbs.
6. Clean the area around the fill plug from
the axle-housing bowl.
7. Fill the axle with approved lubricant
until the level is even with the bottom
of the fill plug hole.
WARNING
When checking or changing the
lubricant, always ensure that the axle
is not hot. Oil temperature 90º F or
hotter can easily cause severe burns.
NOTE
When checking the lube level also check
the housing breathers on top of axle
housing. Clean the breathers if dirty or
replace them if damaged.
Drive Shaft:
The drive shaft transfers the power produced
by the engine to the drive axle. A worn or out of
balance drive shaft causes chassis vibration that
generally increases in intensity with road speed.
Lubrication Maintenance:
The drive shaft requires periodic lubrication
maintenance. Lubricate the slip joint and
universal joints every 5,000 miles or 6 months,
whichever occurs first. Use NLGI #2 chassis
lubricant.
NOTE
It will be necessary to move the
motorhome forward or backward to
access all fittings on the drive shaft.
Greasing the Drive Shaft Universal Joints:
1. Check the drive shaft for looseness.
Repair if loose or worn.
2. Apply the specified grease at the grease
fitting on the universal joint. Apply
until new grease purges from all the
seals.
3. If new grease does not purge at the
seals, loosen the bearing cap bolts and
re-grease until all four caps purge.
If new grease still does not purge,
disassemble and clean or replace the
universal joint.
NOTE
Depending upon application universal
joints may have two grease fittings each.
It is necessary to apply grease to each
fitting to properly lube the universal
joint.
Greasing the Drive Shaft Slip Yoke and
Splines:
1. Check the drive shaft for looseness.
Repair if loose or worn.
Incorrect Oil Level
Correct Oil Level
090264
090467b
Fill Plug
090417d
Dual Zerk U-Joint
090467d
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