300SD (126.120) L5-3.0L DSL Turbo (617.951) (1982)
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On models 123 with automatic transmission 722.303 (W 4 A 040) and 126.120, pull off central plug for vacuum lines (71) or vacuum lines.
Disconnect Bowden wire, compress black plastic clip (arrow) and pull Bowden wire out of holder in rearward direction.
2
Check valve clearance between slide surface of rocker arm and cam base circle of camshaft (arrow). Tip of cam should be vertical in relation to
rocker arm.
Valve clearance is correctly set when pulling of slip gage blade requires some effort.
Observe layout of intake and exhaust valves.
The engine can be rotated as follows:
