| In-vehicle Repair Special Tool(s) | | Installer, intake valve stem oil seal 303-247 (21-130 A) | | | Compressor, valve spring 303-361 (21-155) | | | Adapter for 303-361 (21-155) 303-361-02 | | | Installer, valve stem collets 303-362 (21-156) | | | Adapter, air suppley (cylinder head) 303-363 (21-157) | | | Pliers, valve stem oil seal 303-508 (21-211) | General Equipment Materials Name Specification Engine oil WSS-M2C913–A or WSS-M2C912–A1 Removal | | -
Remove the camshafts. For additional information, refer to Camshaft in this section. | | | -
NOTE:Keep the hydraulic tappets in order for installation. Remove the hydraulic tappets. | | | -
Install the special tools. | | | -
NOTE:Feed the timing chain while rotating the engine. Manually rotate the engine until the piston of the cylinder being worked on is at bottum dead center (BDC). | | | -
Using the special tool, apply compressed air to the cylinder (7-10 bar). | | | -
Using a suitable brass punch, loosen the valve collets. | | | -
CAUTION:Do not damage the valve stem when pressing down the valve spring retainer. Using the special tools, remove the valve collets. | | | -
Remove the valve spring and the valve spring retainer. | | | -
Using the special tool, remove the valve stem seal. - Discard the valve stem seal.
| Installation | | -
Push the valve stem mounting sleeve over the valve collet groove (valve shown removed for clarity). | | | -
NOTE:Install a new valve stem seal. Using the special tool, install the valve stem seal. | | | -
Remove the valve stem mounting sleeve. | | | -
Install the valve spring and the valve spring retainer. | | | -
Using the special tools, install the valve collets. | | | -
Repeat the previous steps to remove and install the other valve seals. | | | -
Remove the special tools. | | | -
Remove the special tool and the compressed air supply line. | | | -
Install the hydraulic tappets in the location from wich they was removed. | | | -
Install the camshafts. For additional information, refer to Camshaft in this section. | | |
