Remove/Install Reverse Idler Shaft With Reverse Gear

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Mercedes-Benz SLK320, 2004 Mercedes-Benz SLK230, 2003 Mercedes-Benz SLK320, 2003 Mercedes-Benz SLK230, and 2002 Mercedes-Benz SLK320. However, it is still accessible from the selected car via links, so may be relevant.

Remove

1 - Unscrew fastener (1). See Fig 1.
2 - Use hot air gun to heat outside of transmission's rear casting section adjacent to the bearing shell (6).
3 - Turn bearing shell (6) to remove.
4 - Remove reverse idler (2), cylindrical roller bearing (3), remove reverse gear (4) and shim (5).

Fig 1: Removing & Installing Reverse Idler Shaft With Reverse Gear (1 Of 3)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Install

NOTE: The cylindrical roller bearing (3), reverse idler shaft (2) and washer (5) must be lubricated.

NOTE: Identify location of threaded drilling in reverse idler shaft.

5 - Place cylindrical roller bearing (3) and shim (5) on the reverse idler shaft (2). See Fig 2.

Fig 2: Removing & Installing Reverse Idler Shaft With Reverse Gear (2 Of 3)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

6 - Install bearing shell (6) together with reverse idler shaft (2) and reverse gear (4).

Fig 3: Removing & Installing Reverse Idler Shaft With Reverse Gear (3 Of 3)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

7 - Adjust bearing shell (6) with bolt (1). See Fig 3.
8 - Drive in reverse idler shaft (2) with plastic mallet.
9 - Adjust reverse idler shaft (2) and tighten with bolt.
Torque specification: Reverse idler shaft retaining bolt. See GEAR ASSEMBLY, SHAFTS