Checking and replacing hydraulic valve clearance compensation elements (bucket tappets) - RA05001202110X(05-2110)

WARNING: This page does not describe the selected car, but rather 42 other vehicles, including the 1999 Mercedes-Benz S600, 1999 Mercedes-Benz S500, 1999 Mercedes-Benz S420, 1999 Mercedes-Benz S320, and 1999 Mercedes-Benz CL600. However, it is still accessible from the selected car via links, so may be relevant.

Operation no. of the operation texts and work units or standard texts and flat rates: 05-2010-2500

Fig 1: Identifying Hydraulic Valve Clearance Compensation Elements - 1St Version

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 2: Identifying Hydraulic Valve Clearance Compensation Elements - 2Nd Version

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

1st version

a= 34.96 - 34.97 mm dia.

b= 26.5 - 27.0 mm

c= Minimum stroke 2.3 mm

2nd version

a= 34.96 - 34.97 mm dia.

b= 25.5 - 26.5 mm

c= Minimum stroke 2.0 mm

Checking

Remove cylinder head cover, install (01-0500) .
Turn cam so that bucket tappet in question is against base circle (cam lobe should point up).

2 Press on bucket tappet with suitable tool (no steel tool). If one bucket tappet is easier to push than the others, replace it.
Replacing
3 Remove camshaft affected, install (05-2200) .
4 Pull bucket tappet on affected cylinder up with suction cup and remove. Visually check basic bore.

Do not use magnets, because extremely small iron particles collect on the magnetized sliding surfaces of the bucket tappet leading to damage on the tappet and cam.

Assure that the bucket tappets are reinstalled in the same position.
COMMERCIALLY AVAILABLE TOOL

Rubber suction cup dia. 30 mm e.g. Hazet no. 735-2