Remove/Install Cylinder Head Cover Trim Panel - Ar01.20-D-5015SF

ENGINES 642 in MODEL 639 Cover on the right cylinder head cover 

ENGINES 642.896 /898 /992 /993 in MODEL 906 Cover on right cylinder head cover 

Fig 1: Cylinder Head Cover Trim Panel Remove/Install Component Locations - Shown On Engine 642 In Model 906

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove air intake hose downstream of air filter	Model 906	AR09.10-D-8030SF
2	Remove engine trim panel	Only with engine 642.992/993 in model 906	AR01.10-D-2405SF
3	Unclip electric wiring harness (7)	Only with engine 642.896/898 in model 906 Installation:  Make sure that routing of electrical wiring harness (7) is correct.
4	Remove bolt (2)
5	Turn oil filler neck (1) anti-clockwise and remove upwards
6	Unclip cover (3) upward	Installation:  Position soundproofing (4) correctly in cover (3). Mounts (5) on cover (3) must engage in ball heads (6).
7	Unscrew oil filler cover (8) on oil filler neck (1)
8	Insert oil filler cover (8) into the opening on the cylinder head cover (9)	For continuing work for which dirt can fall into the camshaft case.
9	Install in the reverse order