11 31 090 Removing and installing/replacing piston for chain tensioner (S62)

WARNING: This page is about a different car, the 2003 BMW Z8, 2002 BMW Z8, 2001 BMW Z8, and 2000 BMW Z8. However, it is still accessible from the selected car via links, so may be relevant.

Remove right intake filter housing, refer to 13 71 020 REMOVING AND INSTALLING RIGHT INTAKE FILTER HOUSING (S62) .

Unfasten screw connection.

Remove chain tensioning piston.

Fig 1: Removing Chain Tensioning Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

To simplify assembly, drain oil chamber between sleeve and hydraulic piston.

Fig 2: Draining Oil Chamber Between Sleeve And Hydraulic Piston

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement of components:

Screw plug
Sealing ring
Sleeve
Recoil spring
Hydraulic piston

Tapered end of recoil spring (4) faces hydraulic piston (5).

Fig 3: Identifying Components

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace sealing ring.

Fig 4: Replacing Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening Torque, 50 Nm.