Mercedes-Benz 603 Service Manual page 289

11 Check link pin rivet, If necessary re-rivet
(arrows).
12 Install chain tensioner (05-310).
13 Turn crankshaft and check adjustment
marking at TDC posltton of engine.
Note
If adjustment markings do not align, the
camshaft timing (05215) and start of delivery of
the injection pump (07.1-l 11) must be checked.
EXIT