18 12 061 Replacing center muffler: Notes

Removing and installing complete exhaust system, refer to 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (M52, M60, M62)

Measure length (B) of pipe sections on new center muffler.

Fig 1: Measuring Length (B) Of Pipe Sections On New Center Muffler

Transfer dimension (B) obtained to the removed exhaust system.

Fig 2: Transferring Dimension (B) Obtained To The Removed Exhaust System

Cut through and deburr exhaust pipes using special tool 00 2 210.

Fig 3: Cutting Through Exhaust Pipes Using Special Tool 00 2 210

Cut through both exhaust pipes between catalytic converter and center muffler on welded seam using grinder.

Fig 4: Cut Through Both Exhaust Pipes Between Catalytic Converter And Center Muffler On Welded Seam Using Grinder

NOTE: Exhaust pipes on center muffler and catalytic converter are connected together and welded.

Fig 5: Identifying Exhaust Pipes On Center Muffler And Catalytic Converter

Grind away residual welded beads from center muffler.

Remove tube socket from catalytic converter pipes.

Fig 6: Identifying Tube Socket

NOTE: If it is not possible to remove the tube socket from the catalytic converter pipes, the appropriate length of pipe must be cut off the new center muffler.

Fig 7: Identifying Appropriate Length Of Pipe To Be Cut Off

CAUTION: The apertures on the new center muffler are sealed with adhesive film.
Remove adhesive films, including those on contact faces of clamping sleeves.

Fig 8: Removing Adhesive Films

Secure new center muffler and clamping sleeves to catalytic converter.

NOTE: Nuts point downwards.

Fig 9: Identifying Correct Positioning Of Nuts

Fit both rear mufflers.

Fig 10: Identifying Rear Mufflers And Clamping Sleeves