Rear strut assembly - Removal and installation - RA32001290610X(32-0610)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Preceding operations:

Drain hydraulic system (32-0630) .

Operation no. of operation texts and work units or standard texts and flat rates

32-0780

Model 129

Fig 1: Identifying Rear Strut Assembly Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Luggage compartment trim panels	remove, install.
	The spring link must be supported if the vehicle is not resting on its road wheels.
Hexagon nuts at upper mount (5a)	remove, install. Remove, install washer (5b) and rubber bushing (5c) (Position 2). When installing, torque the lower hexagon nut (5a) to 25 Nm, then lock with upper hexagon nut (5a), 25 Nm. Ensure that the rubber bushing (5c) seats properly.
Rear wheel	remove, install. Torque lug bolts to 110 Nm.
Roll-over bar switch (S83/2, S83/3)	remove, install (Position 4).
High-pressure line (P4)	detach, reconnect. Tightening torque for banjo bolt (5v): 25 Nm.
Hexagon bolts (72d)	remove, install, remove spring link cover (72c), install (Position 7).
Self-locking hexagon nut with washer (5n)	remove, replace, install, 55 Nm. Remove, install hexagon bolt with washer (5r) (Position 7).
Strut (5)	extract, insert. Pull off, push on lower rubber bushing (5d) and plate (5e). Assemble with parts in correct positions (Position 8).
Roll-over bar system	Check to ensure correct operation.

Special tool

Fig 2: Identifying Special Tools (001 589 67 21 00 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

NOTE: The spring struts also act as the rebound stop for the rear wheels. Therefore only detach the spring strut mounting when the vehicle is on its wheels or the spring link is supported. If the spring strut tube also turns when unscrewing the nuts, this can be held by hand in the wheel house.

Removal, installation

Slacken rear wheel.
Installation note

Tighten wheel bolts, 110 Nm.

Check function of roll-over bar system

The spring link must be supported if the vehicle is not resting on its road wheels.
Unscrew the hexagon nuts (5a), remove the washer (5b) and the upper rubber bushing (5c).
Installation note

Torque the lower hexagon nut to 25 Nm, then lock it with the upper hexagon nut, 25 Nm. Ensure that the rubber bushing (5c) seats properly.
Remove the rear wheel.

Fig 3: Identifying Hexagon Nuts, Washer And Upper Rubber Bushing
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Remove the roll-over bar switch (S83/2, S83/3).

Fig 4: Identifying Roll-Over Bar Switch
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Disconnect the high-pressure line (P4) from the strut.
Installation note

Torque banjo bolt to 25 Nm.

Fig 5: Identifying High-Pressure Line And Strut
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Unscrew the two hexagon bolts (72d) (arrows), then remove the spring link cover (72c).

Fig 6: Identifying Hexagon Bolts And Spring Link Cover
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Unscrew the self-locking hexagon nut (arrow), then remove the hexagon bolt together with its washer.
Installation note

Replace self-locking hexagon nut, 55 Nm.

Fig 7: Locating Self-Locking Hexagon Nut
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Press the strut (5) downward and out of the support socket in the strut tower. Pull the strut from the spring link and then extract it to the rear.
Installation note

Inspect the rubber bellows on the strut, checking for damage and cracks. Check the ball joint for excess resistance to movement, replace strut (5) as indicated. Check mounting components.

Fig 8: Identifying Strut, Hexagon Nut With Washer And Spring Link
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Installation is in reverse sequence.

Model 140

Fig 9: Identifying Rear Strut Assembly Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Luggage compartment lining	remove, install. The vehicle must be on its wheels or the spring link must be supported.
Self-locking hexagon nut on upper mount (5a)	unscrew, replace, install, 40 Nm. Use Allen wrench (5 mm) to apply counter-pressure at the strut mount (Position 2).
Vehicle	raise, lower.
Pressure line (P4)	detach, attach. M16 x 1.5 = 30 Nm.
Bolts (72d)	unscrew, screw in. Remove, refit spring link cover (72c) (No. 5).
Self-locking nut (5n)	unscrew, screw on 100 Nm. Replace self-locking nut (5n). Remove, install bolt and washer (5r) (No. 6).
Spring strut (5)	remove, install (No. 7).

Special tool

Fig 10: Identifying Special Tools (001 589 67 21 00 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

NOTE: The spring struts also act as the rebound stop for the rear wheels. Therefore only detach the upper mounting when the vehicle is on its wheels or the spring link is supported.

Removal, installation

Remove luggage compartment lining.

The vehicle must be on its wheels or the spring link supported.
Unscrew self-locking nut (5a) while holding the spring strut bearing in position using an Allan key WAF5 (arrow).
Installation note

Replace self-locking nut, 40 Nm.
Raise the vehicle.
Installation note

Extend the strut until its mount is against the strut tower in the vehicle's floorpan.

Fig 11: Identifying Self-Locking Nut And Allan Key
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Disconnect pressure line (P4) at the steel line/pressure hose connection (arrow) and seal line connections with suitable plugs.
Installation note

M16 X 1.5 = 30 Nm.

Check line connections for leaks.

Fig 12: Identifying Pressure Line
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Unscrew four bolts (72d) and remove spring link cover (72c).

Fig 13: Identifying Four Bolts And Spring Link Cover
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Unscrew self-locking nut (5n), and remove bolt and washer (5r).
Installation notes

Replace self-locking hexagon nut, 100 Nm.

Fig 14: Identifying Self-Locking Nut, Bolt And Washer
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Press spring strut (5) out downwards from the retainer bore in the frame floor. Remove spring strut from spring link and draw out rearwards.
Installation notes

Inspect the rubber bellows on the strut, checking for damage and cracks. Check the ball joint for excess resistance to movement, replace strut (5) as indicated.

Fig 15: Identifying Spring Strut, Self-Locking Nut, Bolt With Washer And Spring Link
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Check attachment parts.

Fig 16: Identifying Spring Strut Attachment Components
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Install in reverse sequence.