Replace Cylinder Head Valve Stem Seal - AR05.30-P-3510-01MRT

Engine 254.9, 256.9 

Specified engine oils for Cars, Vans (service) - Overview

BB00.40-P-0223-02A

Fig 1: Identifying Drift (604 589 00 43 00)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Pliers (606 589 00 37 00)

Courtesy of MERCEDES-BENZ USA

1. Use pliers (2) to remove valve stem seal (1).
2. Check valve stem for ridging and pitting.

   If ridging is present,

   ↓

   Deburr valve stem.

   If pitting is present,

   ↓

   Replace valve.

3. Fit protective sleeve onto the valve stem.
4. Moisten valve stem seal (1) with engine oil.
5. Install valve stem seal (1) by inserting drift (3) to end stop.
6. Pull off protective sleeve from valve stem.

Courtesy of MERCEDES-BENZ USA