Muffler: Service and Repair

Removing And Installing Rear Silencer

Tools







Technical Values







Preliminary work
1. Remove rear wheel. Use a socket wrench insert P 300 to avoid damage to the wheel rims.







2. Remove strut for rear apron. Unscrew fastening screws -1 and 2- and remove strut.

Removing rear silencer

DANGER:
Parts of the exhaust system become extremely hot.
- Danger of burns
- Permanent scarring of the skin
- Do not begin work until the exhaust system has cooled down completely.
- If it is imperative that you work on the hot exhaust system, ensure that you wear fire-resistant and heat-resistant protective gear.

Component Overview Of Silencer















1. Remove tailpipe. Unscrew M8 screw -1- on the ball clamp, widen ball clamp -arrow- and pull off tailpipe.







2. Screw off M8 fastening nuts on clamping sleeve. If corroded, spray sleeve with penetrating oil or heat it up.







3. Unscrew three M8 hexagon nuts on the rear silencer holder -arrow-. Tool recommendation: commercially available 3/8-inch ratchet wrench with extension, universal joint and socket wrench insert (a/f 13).
4. Push clamping sleeve towards the catalytic converter and lift silencer in the direction of the wheel housing and out of the vehicle.

Installing rear silencer

INFORMATION: Replace clamping sleeve, seal and lock nuts. Apply a light coating of high-temperature grease on the sleeve before installation to facilitate fitting.

1. Fit new clamping sleeve. To do this, slide the clamping sleeve onto the catalytic-converter pipe.







2. Insert the silencer into the vehicle from the wheel side and move it to installation position. Then fit three new hexagon nuts on the screw connection points of the holder and tighten only slightly.







3. Slide the clamping sleeve over the silencer pipe and move it to installation position. Screw down both hexagon nuts and tighten to the prescribed torque. - Tightening torque: 23 Nm (17 ftlb.)
4. Tighten three hexagon nuts on the rear silencer holder. - Tightening torque: 23 Nm (17 ftlb.)
5. Fit and adjust tailpipe. - Tightening torque: 30 Nm (22 ftlb.).

Subsequent work







1. Fit strut for rear apron and tighten screws.
- Tightening torque, item 1: 3 Nm (2 ftlb.)
- Tightening torque, item 2: 10 Nm (7.5 ftlb.)
2. Fit rear wheel. Use a socket-wrench insert P 300 to avoid damaging the wheel rims.