Disassembling and Assembling Cylinder Head - Camshaft Drive

Disassembling and assembling cylinder head - Camshaft drive














Diagram shows cylinder head 1 - 3

Note;
- Magnetized tools or magnets must not be used when removing and installing valve tappets (flat-base tappets).

A suitable removal tool is a rubber suction cup, for example.

Cylinder head assembly instructions
Pairing numbers or identification for cylinder head, cylinder head cover and camshaft bearing saddles.

Camshafts Of Cylinder Bank 1 - 3:

The cylinder head, cylinder head cover and camshaft bearing saddles are machined together and must therefore always be installed together. Observe pairing numbers.








A Pairing number of cylinder head cover
B Pairing number of cylinder head
C Pairing number of the two bearing saddles

Note;
- The letters E or A before pairing numbers mean:
- E = Bearing saddle for inlet camshaft
- A = Bearing saddle for exhaust camshaft

Camshaft assembly instructions
Preassemble camshafts
The inlet camshaft, exhaust camshaft, chain tensioner and chain must be preassembled before installation in the cylinder head.








Camshaft allocation





Camshafts of cylinder bank 1 - 3





Camshafts of cylinder bank 4 - 6

Allocating tensioning elements





Identification of the chain tensioner for cylinder bank 1 - 3:
A Cyl. 1 - 3
B Solenoid valve surface color black

Identification of the tensioning element for cylinder bank 4 - 6:
A = Cylinder bank 4 - 6 B = Solenoid valve surface color grey
Guide rails for tensioning element
Check guide rails for scoring and replace if necessary





Illustration shows tensioning element of cylinder bank 1 - 3
1. Upper guide rail
2. O-ring
3. Lower guide rail

Note;
- Parts 1 to 3 are available together as a spare-part repair set via the Parts Service.