C 230K (202.024) L4-2.3L SC (111.975) (2001)
Valve: Service and Repair
Remove/Install Valves
Shown On Engine 111
Remove/Install
1
Remove cylinder head (87)
2
Remove camshafts
3
Place cylinder head (87) onto assembly board (24)
NOTE: Place correct side of insert (25) into assembly board (24) with the direction of travel arrow (26) facing forward. Attach cylinder head (87)
to assembly board (24) with a cylinder head bolt (23) at the front and rear, with front of cylinder head pointing toward direction of travel arrow
(26).
4
Bolt on support bridge (2) with slide (7)
NOTE: Screw support bridge (2) onto camshaft bearings 1+5 and 6+10, for this step use collar bolts for camshaft bearing caps.
5.1 Remove hydraulic valve clearance compensation elements (3) (bucket tappets)
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Engine 111
5.2 Remove hydraulic valve clearance compensation elements
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Engine 271
6
Attach lever compression tool (9) with thrust piece (5) into collapsible section (7) and align.
-
Position thrust piece (5) vertically at valve spring retainer (15) and align parallel to slide (7).
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Fix thrust piece (5) in place with screw (8) to prevent it turning.
7
Remove upper valve spring plate (15) and valve spring (17)
NOTE: Press together valve spring (17)
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Take out split valve spring retainer locks (14) with tweezers (6).
NOTE: The valve springs of the inlet valves and exhaust valves are identical.
8
Replace valve stem seals
9
Remove lower valve spring plate (20)
Testing