227
2008 IMPERIAL
CHASSIS INFORMATION — 10
NOTE:
Inspect for signs of leakage when
performing fluid level checks.
Changing the hydraulic
fi
lters in the engine
compartment at regular intervals will help
ensure trouble-free operation.
DRIVE AXLE & DRIVE SHAFT
Drive Axle:
The chassis drive axle
is a single reduction
axle. The differential
gears consist of a
hypoid pinion and
ring gear set and bevel
differential gears. The
differential carrier can
be removed from the
axle housing as a unit
in order to perform
repairs.
All power from the engine to the rear tires is
transferred through the rear axle. For this reason,
it is important that maintenance be performed on
the axle as required to avoid premature wear of
the gears and bearings in the axle.
Drive Axle Lubricant:
The rear axle is
fi
lled with 80w-90 gear oil
meeting SAE J 2360 speci
fi
cations. Change
interval is every 250,000 miles or 36 months,
whichever occurs
fi
rst.
During lubricant change,
fi
ne metal
particles will be observed clinging to the
magnetic
fi
ll and drain plugs of the axle.
These particles are normal wear particles from
the axle components, but will cause faster
than normal wear of the axle components if
allowed to circulate through the lubricant. It is
recommended that the magnetic plugs be tested,
and if necessary, replaced at each lubricant
change. These plugs should have suf
fi
cient
magnetic strength to pick up a 1.5 lbs. weight of
low carbon steel. Never replace a magnetic plug
with a non-magnetic “pipe plug” as they will
not keep the lubricant clear of metal particles or
properly seal.
The level of lubricant in the rear axle should
be checked every 30,000 miles or annually,
whichever occurs
fi
rst. This will ensure adequate
lubricant in the axle for proper operation. Regular
inspection of the drive axle lube levels is an
essential maintenance procedure.
WARNING:
Never place yourself under motorhome
without first properly blocking frame
(jackstands) from coming down in case
of rapid deflation of air system.
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
fi
ll plug,
which is located approximately halfway
up the axle housing bowl.
Remove the
fi
ll 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
suf
fi
cient. The lube must be level with
the hole.
Correct the level as necessary.
Re-install the
fi
ll 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
fi
ll plug from
the axle-housing bowl.
7. Fill the axle with approved lubricant
until the level is even with the bottom
of the
fi
ll 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.
090416
Ring and Pinion Gears
Incorrect Oil Level
Correct Oil Level
090264
090467b
Fill Plug
Содержание Rambler Imperial 2008
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