| In-vehicle Repair Special Tool(s) | | Valve spring compressor 303 - 361 (21155) | | | Adapter for 303 - 361 303 - 361 - 04 (2115504) | | | Adapter for 303 - 361 303 - 361 - 05 (2115505) | | | Installer, valve collets 303 - 362 (21156) | | | Adapter, cylinder air supply 303 - 363 (21157) | | | Pliers, valve stem seals 303 - 508 (21211) | Materials Name Specification Engine oil WSS-M2C912-A1 Removal | | -
Remove the camshafts. For additional information, refer to Camshafts in this section. | | | -
Remove the ignition coil and the condenser. | | | -
Attach the special tools. - Apply compressed air to the cylinder at 7 to 10 bar.
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Remove the valve spring using the special tool. - Compress the valve springs.
- Remove the valve collets, valve spring retainers and the valve springs.
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Remove the valve stem seal using the special tool. | | | -
Repeat the previous steps for all valves. | Installation | | -
Push the valve stem seal assembly sleeve onto the valve stem. | | | -
CAUTION:The valve stem seals for the inlet valves are green, and those for the exhaust valves are brown. Fit the valve stem oil seal. - Lubricate the valve stem and valve stem seal lip with engine oil .
- Push the valve stem seal onto the valve stem.
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Install the valve spring and valve spring retainer. - Tension the valve springs using the special tool and pull the valve stem seal assembly sleeve from the valve stem.
- Insert the valve collets using the special tool.
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Repeat the previous steps for all valves. | | | -
Detach the special tools. | | | -
Install the ignition coil and the condenser. | | | -
Remove the camshafts. For additional information, refer to Camshafts in this section. | | |
