Drive chain tensioner
Removal
The location of the fastening brackets connecting the outer and inner parts of the chain guide
1. Set the piston of the first cylinder to top dead center and check that all timing marks are aligned with the pointers.
2. Remove the lower drive chain cover.
3. Using paint, apply alignment marks to the drive chain and camshaft sprocket.
4. Using a screwdriver blade, release the mounting brackets and remove the outer part of the chain guide (see Fig. Location of the fastening brackets connecting the outer and inner parts of the chain guide).
5. Move the drive chain forward as far as possible and remove the inner portion of the guide from the retainers on the cylinder block.
Examination
1. Check the condition of the damper and the brackets for fastening the outer and inner parts of the damper and, if necessary, replace the damper assembly.
Material taken from a web resource (Mercedesman.ru)
Installation
1. Move the drive chain forward as far as possible and install the inner part of the guide onto the clips in the cylinder block.
2. Install the chain on the inner part of the damper, install the outer part of the damper and secure with brackets.
3. Install the camshaft sprocket.
4. Install the lower drive chain cover.
Drive chain tensioner shoe
Removal
Removal the tensioner shoe
After applying alignment marks to the chain and crankshaft sprocket (arrows), remove the tensioner shoe (1).
1. Set the piston of the first cylinder to top dead center and check that all timing marks are aligned with the pointers.
2. Remove the lower drive chain cover.
3. Using paint, apply alignment marks to the timing chain link and crankshaft sprocket.
4. Rotate the drive chain tensioner shoe and remove it from the pivot pin (see fig. Removing the tensioner shoe).
Installation
1. Install the tensioner shoe onto the pivot pin.
2. Check that the timing marks on the valve timing mechanism are aligned with the pointers.
3. Check the alignment of the marks on the drive chain link and the crankshaft sprocket.
4. Install the lower drive chain cover.