Replace Seal On Oil Dipstick Guide Tube - AR18.40-P-0815-01MR

ENGINE 270, 274 

1. Insert stable plastic foil (2) into sealing ring (1).
2. Push on sealing ring (1) with plastic foil (2) all the way onto oil dipstick guide tube (3).

   This must not be damaged in the area of the elongated hole for assembly of the sealing ring (1).

   Leaks can occur otherwise

3. Pull out plastic foil (2).

   Make sure that sealing ring (1) is seated correctly.

Courtesy of MERCEDES-BENZ USA