Cylinder Head - Camshaft Drive

Disassembling and assembling cylinder head - Camshaft drive




Cylinder head 1 - 3, exploded view










Designations and notes

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.








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

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
Identification on the camshaft
Inlet camshaft: 221.55/3.4 IN 13
Exhaust camshaft: 222.55/3.4 EX 13





Camshafts of cylinder bank 4 - 6
Identification on the camshaft
Inlet camshaft:216.55/3.4 IN 46
Exhaust camshaft: 218.55/3.4 EX 46

Allocating tensioning elements





Identification of the chain tensioner for cylinder bank 1 - 3:





Identification of the tensioning element for cylinder bank 4 - 6:


Guide rails for tensioning element





Check guide rails for scoring and replace if necessary

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