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4E Overhauling the valve system
230, 250, AQ131, AQ151
85. Remove the cylinder head. Tool width = 14 mm.
Remove the bolts in the sequence shown in the pic-
ture.
IMPORTANT! In order to avoid scratching the
cylinder head it should be placed on wooden
blocks.
86. Remove the cylinder head gasket.
87. Remove the camshaft gear. Tool width: 17 mm.
Use counterhold part no 9995034-7.
NOTE! Remove the washer behind the gear wheel.
50
88. Remove the middle camshaft cap. Tool width:
1/2".
89. Install special tool part no 9995021-4 on the
camshaft. Use the cap nut. The tool is keeping ten-
sion on the camshaft. Remove the remaining 4 cam-
shaft caps.
90. Remove the sealing (1) from the camshaft as
well as the plug in the opposite end. Back off the
special tool, releasing the camshaft. Remove the
special tool and the camshaft.
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