Installing the complete prop shaft

NOTE: RISK OF DAMAGE
Damage to the prop shaft during installation.
Non-observance of the installation guidelines for the prop shaft on the rear axle differential may cause severe damage.

Always replace the recessed nut on the rear axle differential. Screw lock must be available.
Strictly observe a minimum hardening time of three hours after having screwed in the recessed nut. The hardening time may be longer at lower temperatures.

Observe following installation sequence:
- Position prop shaft on transmission.
- Position the prop shaft at the rear axle differential.
- Position central mount.
Observe the following screwing sequence:
- recessed nut
- Flexible disc to transmission
- Central mount
Check the centering (arrow) for damage and replace if necessary.

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Apply a thin coat of grease to the soft centering (1), if necessary.

Consumable
Lubricating grease Olistamoly 2 LN 584 LO	100 g, Tube	83 19 0 447 919

Do not grease the hard centering (2).

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Clean any residue on recessed collar (1) of the twelve-edge flange nut and the gearing on bevel drive pinion (2) and degrease it.

Top up the collar insert (1) with grease.

Consumable
Lubricating grease Optitemp HT 1 LF	50 g, Tube	83230417754

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Use thread file (1) to remove any adhesive residue on the thread.
The correct thread pitch must be observed.

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NOTE:
RISK OF DAMAGE
Damage to the output flange.
Failure to observe the greasing specifications may lead to damage on the output flange.
- Do not contaminate the thread of the output flange with grease.
Clean thread (1) of flange off adhesive residue.
Clean gearing (2).

Grease gearing (2).

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Consumable
Lubricating grease Optitemp HT 1 LF	50 g, Tube	83230417754

Replace the seal, recessed nut (1) and retaining ring (2).
Parts: Seal, recessed nut, retaining ring
Insert recessed nut (1) with the seal in the recessed collar of the twelve-edge flange nut.
Mount retaining ring (2).

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Assemble three-hole flange (3) again in the same position with flexible disc (2) to prevent a humming noise in the drivetrain after reinstalling the prop shaft.
Replace ZNS screws and self-locking nuts (1).
Parts: ZNS screws, self-locking nuts

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Position the screws and nuts (arrows).

Tighten the screws.

TIGHTENING TORQUES SPECIFICATION

Front flexible disc to prop shaft
M12 Replace screws. Joining torque and angle rotation must be adhered to. Tightening via screw.	Joining torque	55 Nm
	Angle of rotation	90°

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Push the prop shaft (1) in arrow direction against the recessed nut (2) up to the stop.
Unscrew the recessed nut (2) by at least 2 threads manually on the prop shaft (1) and fasten it.

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Version with the TOP designation:
Install central mount (1) into the transmission tunnel with the designation TOP facing upwards.

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Position central mount.
Position screws (1).

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Version with narrow universal joint:
Use special tool 2 464 898 and a suitable tool (1) to protect the prop shaft (2) on the central universal joint from twisting,

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Variant with a wide universal joint:
Secure the juncture shaft on the center universal joint with a suitable tool (1) to protect it from twisting.

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NOTE:
RISK OF DAMAGE
Damage to the flange nut.
Failure to observe the installation specifications may lead to serious damage to the flange nut and the rear axle differential.
- Do not use the twelve-edge flange nut as counter support.
- Screw in the recessed nut within 5 minutes.
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Screw recessed nut in the arrow direction (counterclockwise) using special tools 0 495 554 (33 5 070) and 0 496 959 (33 0 080).

The recessed nut must be screwed into place within 5 min.

TIGHTENING TORQUES SPECIFICATION

Propeller shaft to rear axle differential
recessed nut Replace recessed nut.	tightening torque	100 Nm

After the prop shaft is installed and the recessed nut is screwed in, maintain a hardening time of minimum 3h.
During this time the vehicle must not be moved or pushed!
Replace the mounting bolts.
Parts: Mounting bolts

Hold down mounting bolts of the flexible disc on the nut and tighten via the screw.

TIGHTENING TORQUES SPECIFICATION

Rear flexible disc to three-hole flange
M12 Replace screws. Joining torque and angle of rotation must be observed without fail. Tightening via screw.	Joining torque	55 Nm
	Angle of rotation	90°

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Secure special tool 0 490 504 (00 9 120) to the underbody using special tool 0 495 108 (00 9 130) and screw it further depending on the angle of rotation .

Tighten down screws (1).

TIGHTENING TORQUES SPECIFICATION

Drive shaft center bearing on body
M8	Tightening torque	19 Nm

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Follow-up work

Refer to INSTALLING THE HEAT SHIELDS .
Refer to INSTALLING EXHAUST SYSTEM .
Refer to INSTALLING CENTER STIFFENING PLATE .
Refer to INSTALLING TANK COVER ON LEFT AND RIGHT .
Refer to INSTALLING REAR PANEL .
Refer to PARTIALLY INSTALLING THE REAR LEFT AND RIGHT WHEEL ARCH COVERS .
Refer to INSTALLING BOTH EXHAUST COVERS .
Refer to INSTALLING BOTH SIDE REAR TRIM STRIPS .
Refer to INSTALLING THE REAR BUMPER TRIM .
Refer to INSTALLING THE REAR DIFFUSER .
Refer to INSTALLING THE TAIL LIGHT ON THE LEFT AND RIGHT SIDE PANELS .
Refer to INSTALLING COVER FOR WATER CHANNEL ON LEFT AND RIGHT .
Refer to INSTALLING THE LUGGAGE COMPARTMENT WHEEL ARCH TRIM PANEL ON THE LEFT AND RIGHT (PARTIALLY REMOVED) .
Refer to INSTALLING BOTH LEDS IN THE CARGO AREA .
Refer to INSTALLING LOADING EDGE TRIM .
Refer to INSTALLING LUGGAGE COMPARTMENT FLOOR COVERING .