How to easily inspect and change the cam chain on the M271.9 engine. Lots of tips and new footage.

New footage of the much talked about Mercedes M271 engine and its cam chain. Everything is included from start to finish. How to disconnect the battery, remove the alternator, the power steering pump, the cam chain tensioner, plus lots of tips and tricks and great footage for the DIY mechanic. Grab a good cup of coffee and enjoy the entire video in its entirety.

The car, a Mercedes C180 (S203 W203) has driven 157,000 km. This is the first time the engine is opened. A nice surprise awaits. And I show the whole process of checking and then changing the cam chain on the engine. The first start of the engine after service is also included.

I hope you like the video.

00:00 - Introduction
00:20 - Why it is important to disconnect the battery
00:50 - Getting access to the crank pulley
01:35 - Loosen the hose from EGR-valve
02:10 - Silencer upper hose clamp
02:37 - Hard to reach bolts
03:12 - Silencer metal clip
03:32 - Taking out the silencer
04:21 - Removing engine plastic cover
04:39 - Unclipping hoses and cables
05:34 - Removing the ignition coils.
06:58 - Valve cover bolts location and removal
08:34 - Moving the wiring harness
09:57 - Removing the valve cover
10:16 - Spark plugs removal
11:15 - Turning the engine and checking the timing.
12:34 - Closer look at the timing chain
13:20 - Removing the valve timing magnets.
13:59 - Inspecting timing adjusters for excessive wear
14:43 - The chain tensioner from inside the engine.
15:05 - installation of special tools and preparation
16:22 - Getting access to the chain tensioner.
17:15 - Move the power steering to the side
18:45 - Move the generator to the side
19:07 - Removing the chain tensioner
19:54 - Splitting the old chain
20:30 - Attaching the new chain
21:07 - Pull in the new chain and remove the old chain
22:43 - Riveting the new chain.
23:53 - Replacing the slide rail.
22:26 - Installing the chain tensioner
25:18 - Check for chain tension and remove the special tool.
25:54 - Check the timing before rotating
27:05 - Rotating the engine and lubricating the new chain
28:12 - Valve cover gasket and cleaning
28:53 - Installing the valve cover
29:45 - Tightening sequence of the valve cover
30:21 - First engine start
30:39 - Second start.