Facing contact surface of crankcase - RA01001041200X(01-1200)

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.

Preceding work:

Pistons removed (03-3160) .

Operation no. of operation texts and work units or standard texts and flat rates

Fig 1: Identifying Facing Contact Surface Of Crankcase

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

DATA

Height "H" of crankcase when new

282.25 - 282.35

Minimum height after necessary stock removal⁽¹⁾

281.95

Permissible unevenness

upper crankcase contact surface

0.03

lower crankcase contact surface

0.04

Permissible deviation of parallelism of upper to lower contact surface of crankcase in longitudinal direction transverse direction

0.1
0.05

Peak-to-valley height (Rz)

upper crankcase contact surface

0.005 - 0.020

lower crankcase contact surface

0.025

Test pressure with air in water in bar gauge

1.5

Chamfering of cylinder bores

see note

⁽¹⁾	The stock removal at the crankcase and at the cylinder head of an engine must together not be more than 0.4 mm (see 01-4180 ).

NOTE: Face crankcase together with the timing case cover.

After facing, chamfer the cylinder bores as shown in the drawing opposite.

Fig 2: Identifying Chamfer Cylinder Bores Position

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Chamfer cylinder bores with a suitable handmilling cutter as shown in the drawing. Equalize bottom edge of chamfer with polishing stone.

Fig 3: Identifying Chamfer Cylinder Bores

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.