In-vehicle Repair Special Tool(s) | Valve Spring Compressor 303-361A (21-155 A) | | Adapter for 303-361A 303-361-02 (21-155-02) | | Connector, Air Supply (Cylinder Head) 303-363 (21-157) | Materials Name Specification Engine oil WSS-M2C912-A1 Removal | -
Remove the camshafts. For additional information, refer to Camshafts in this section. - Remove the valve tappets and lay them in order, to one side.
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WARNING:Always wear protective goggles when working with compressed air. Failure to do so can result in injury. Remove the spark plug from cylinder no. 1 and attach the special tool. | | -
CAUTION:Use compressed air at 7 to 10 bar. Attach the special tools and apply compressed air to the cylinder. - Compress the valve spring.
- Remove the valve collets.
- Take out the valve spring retainer and the valve spring.
| Installation | -
NOTE:Check that the valve collets are correctly seated. Install the valve springs with the valve spring retainers. - Compress the valve springs.
- Install the valve collets.
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Detach Special Tool 303-363 and screw in the spark plug. | | -
Repeat the operations for all the other cylinders. | | -
Coat the valve tappets with engine oil and insert. | | -
Install the camshafts. For additional information, refer to Camshafts in this section. | | |