Mercedes-Benz Sprinter / Dodge Sprinter. Manual — part 179
(6) Remove shaft from the vehicle.
INSTALLATION
(1) Install propeller shaft intermediate bearing/
bearings to support and tighten nuts to 105 N·m (77
ft. lbs.).
(2) Install propeller shaft intermediate bearing
support/supports to frame floor and tighten bolts to
95 N·m (70 ft. lbs.).
(3) Install propeller shaft intermediate bearing
with retaining bracket and bracket for brake cable.
NOTE: The bracket is only installed on vehicles
with wheelbase 3550 mm.
(4) Install propeller shaft to rear axle and trans-
mission flange with installation marks are aligned.
Tighten bolts to 70 N·m (66 ft. lbs.).
(5) Install retaining bracket and tighten bolts to
100 N·m (74 ft. lbs.).
CENTER BEARING
REMOVAL
(1) Remove propeller shaft.
(2) Mark shafts for installation alignment (Fig.
10).
(3) Loosen both collar clamps (Fig. 11).
Fig. 9 3 PIECE PROPELLER SHAFT
1 - FLANGE BOLT
7 - BRACKET
2 - INTERMEDIATE BEARING
8 - RETAINING BRACKET
3 - CENTER SHAFT
9 - BOLT
4 - REAR SHAFT
10 - FRONT SHAFT
5 - REAR AXLE
11 - TRANSMISSION
6 - NUT
Fig. 10 ALIGNMENT MARKS
1 - ALIGNMENT MARK
2 - BOOT
3 - ALIGNMENT MARK
4 - CENTER BEARING
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PROPELLER SHAFT
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(4) Pull apart propeller shaft.
(5) Remove snap-ring (Fig. 12).
NOTE: If center bearing is equipped with a round
flange remove bolt from the middle of the flange.
(6) Pull off center bearing with a Bearing Splitter
1130 and Bridge 938, with a plug on the end of the
shaft (Fig. 13).
NOTE: The bearing splitter must be positioned
behind the thrust washer of the bearing.
INSTALLATION
(1) Press center bearing on propeller shaft with
protective caps and washer with Installer 9275 (Fig.
14).
Fig. 11 BOOT
1 - BOOT
2 - CLAMP
3 - SHAFT
Fig. 12 CENTER BEARING
1 - SNAP-RING
2 - CENTER BEARING
3 - WASHER
4 - SHAFT
5 - PROTECTIVE CAP
Fig. 13 CENTER BEARING REMOVAL
1 - BRIDGE
2 - PLUG
3 - BEARING SPLITTER
4 - CENTER BEARING
Fig. 14 CENTER BEARING INSTALLATION
1 - INSTALLER
2 - CENTER BEARING
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PROPELLER SHAFT
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NOTE: If center bearing is equipped with a round
flange install new bolt in middle of the flange and
tighten to 95 N·m (70 ft. bls.).
(2) Install snap-ring.
(3) Coat propeller shaft spline with universal
grease.
(4) Push rubber boot onto propeller shaft.
(5) Push together propeller shaft. Pay attention to
alignment markings for installation position.
(6) Ensure rubber seal is correctly installed and
attach new collar clamps.
(7) Install propeller shaft.
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PROPELLER SHAFT
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REAR AXLE
TABLE OF CONTENTS
page
page
REAR AXLE
. . . . . . . . . . . . . . . . 12
STANDARD PROCEDURE - DRAIN AND FILL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
. . . . . . . . . . . . . . . . . . . . . . . . . 16
. . . . . . . . . . . . . . . . . . . . . . . 18
. . . . . . . . . . . . . . . . . . . . . . . 19
SHAFT-AXLE SINGLE REAR WHEEL
INSTALLATION-SINGLE REAR WHEEL
BEARING/SEAL-AXLE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
. . . . . . . . . . . . . . . . . . . . . . . . . 26
SHAFT-AXLE DUAL REAR WHEELS
BEARING/SEAL-AXLE HUB
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
. . . . . . . . . . . . . . . . . . . . . . . . . 29
DIFFERENTIAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
. . . . . . . . . . . . . . . . . . . . . . . . . 37
BEARINGS-DIFFERENTIAL CASE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
. . . . . . . . . . . . . . . . . . . . . . . . . 38
SEAL-PINION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
. . . . . . . . . . . . . . . . . . . . . . . . . 40
GEAR-PINION/RING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
. . . . . . . . . . . . . . . . . . . . . . . . . 42
REAR AXLE
DIAGNOSIS AND TESTING
NOTE: Axle seals, axle bearings, pinion seals and
differential cover are the only serviceble compo-
nents. If differential is damaged/noisy the axle must
be replaced.
GEAR NOISE
Axle gear noise can be caused by insufficient lubri-
cant, incorrect backlash, incorrect pinion depth, tooth
contact, worn/damaged gears, or the carrier housing
not having the proper offset and squareness.
Gear noise usually happens at a specific speed
range. The noise can also occur during a specific type
of driving condition. These conditions are accelera-
tion, deceleration, coast, or constant load.
When road testing, first warm-up the axle fluid by
driving the vehicle at least 5 miles and then acceler-
ate the vehicle to the speed range where the noise is
the greatest. Shift out-of-gear and coast through the
peak-noise range. If the noise stops or changes
greatly:
• Check for insufficient lubricant.
• Incorrect ring gear backlash.
• Gear damage.
Differential side gears and pinions can be checked
by turning the vehicle. They usually do not cause
noise during straight-ahead driving when the gears
are unloaded. The side gears are loaded during vehi-
cle turns. A worn pinion shaft can also cause a snap-
ping or a knocking noise.
BEARING NOISE
The axle shaft, differential and pinion bearings can
all produce noise when worn or damaged. Bearing
noise can be either a whining, or a growling sound.
Pinion bearings have a constant-pitch noise. This
noise changes only with vehicle speed. Pinion bearing
noise will be higher pitched because it rotates at a
faster rate. Drive the vehicle and load the differen-
tial. If bearing noise occurs, the rear pinion bearing
is the source of the noise. If the bearing noise is
heard during a coast, the front pinion bearing is the
source.
Differential bearings usually produce a low pitch
noise. Differential bearing noise is similar to pinion
bearing noise. The pitch of differential bearing noise
is also constant and varies only with vehicle speed.
Axle shaft bearings produce noise and vibration
when worn or damaged. The noise generally changes
when the bearings are loaded. Road test the vehicle.
Turn the vehicle sharply to the left and to the right.
This will load the bearings and change the noise
level. Where axle bearing damage is slight, the noise
is usually not noticeable at speeds above 30 mph.
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REAR AXLE
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