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7 Lubrication
34 ArvinMeritor Maintenance Manual MM-0361 (Revised 04-10)
Drain and Replace the Oil
1. Park the vehicle on a level surface. Place a large container
under the axle.
2. Remove the drain plug from the bottom of the axle. Drain and
discard the oil correctly.
3. Clean, install and tighten the drain plug to 35-50 lb-ft
(48-67 Nm). @
4. Remove the fill plug from the axle.
5. Fill the axle to the bottom of the fill plug hole with the specified
oil. Allow enough time for oil to circulate through the axle
assembly.
6. Install and tighten the fill plug to 35-50 lb-ft (48-67 Nm). @
Lubrication
Knuckle King Pins
With the vehicle weight on the wheel end, pump grease through the
grease fittings located on the upper cap or steering arm and lower
cap assemblies. Grease should purge through the seals and thrust
bearing.
Camshaft Retainer Bushing and Cam
Bushing
Pump grease until it purges through the seals.
Drive Axle Shaft Universal Joint
1. Permanently-lubricated Permalube™ drive shaft joints do not
have a grease fitting provided. Periodic greasing is not required
for these parts. For serviceable universal joints with grease
fittings, follow Step 2 through Step 3.
2. Clean all grease fittings prior to lubrication.
3. Apply the specified grease at the grease fitting on the universal
joint. Apply grease until new grease purges from all the seals.
If new grease does not purge at every seal: Move the
drive shaft while applying grease at the fittings until new
grease purges at every seal.
If new grease still does not purge: Disassemble the
universal joint. Inspect the grease and the components.
Service as necessary.
Axle Shaft Spline and Thrust Washer
On axles with greaseable drive flanges, pump grease through the
grease fitting until it purges at the axle shaft seal. Figure 7.1.
Figure 7.1
Cross Tube End Assembly
1. Check the cross tube for looseness of more than 0.060-inch
(1.52 mm). Figure 7.2. If loose, service as necessary.
Figure 7.2
2. Apply the specified grease at the grease fitting on the cross
tube. Apply grease until new grease purges from all the seals.
If new grease does not purge at the seals: Move the
cross tube while applying grease at the fittings until new
grease purges from all the seals.
If new grease still does not purge: Disassemble the
cross tube. Inspect the grease and the components.
Service as necessary.
Figure 7.1
Figure 7.2
GREASE
FITTING
SEAL
4000798a
KNUCKLE BUSHING
GREASE FITTING
DRIVE
FLANGE
GREASE
FITTING
CROSS TUBE
GREASE FITTING 4000799a
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