Removing and Installing Belt Tensioner

WM 137319 Removing and installing belt tensioner





Preliminary work

Preliminary work

1. Loosen drive belt around the belt tensioner.

Information

Component overview





Component overview of drive belt rollers

1 - Deflection roller, cylinder bank 1-4 - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
2 - Tensioning roller
3 - Holder for deflection roller
4 - Fastening screw for damper - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
5 - Support for tensioning roller - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
6 - Shock absorber/tensioning element; bellows must be facing upwards. Observe code on the component.
7 - Deflection roller, cylinder bank 5-8 - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)
8 - Sheetmetal holder

Removing belt tensioner

Removing belt tensioner

1. Loosen the bottom fastening screw on the shock absorber.
2. Loosen the top fastening screw.
3. Remove components and repair appropriate components.
4. In order to remove the tensioning roller -figure shows deflector roller- , the cap must be levered off first. To do this, insert a small screwdriver underneath the cap and lever it off.





Deflection roller

Installing belt tensioner

Installing belt tensioner

Information:
When fitting the damper element/tensioner, ensure that the label can be read from outside.
The bellows must be facing upwards.
Tensioner to lever, M8 -arrow- - Tightening torque: 32 Nm (24 ftlb.)±3 Nm (±2 ftlb.)





Damper element/tensioner

1. Install holder with tensioning element. Tighten the top fastening screw. - Tightening torque: 24 ftlb.
2. Tighten the bottom fastening screw. - Tightening torque: 24 ftlb.

Subsequent work

Subsequent work

1. Fit drive belt.