Valve Guide: Service and Repair

REMOVAL - CYLINDER HEAD GUIDE RAIL
1. Disconnect negative battery cable.

CAUTION: Rotate engine at crankshaft only. DO NOT rotate the engine with the bolt of the camshaft sprocket. DO NOT rotate the engine back.

NOTE: Markings on the camshaft and camshaft bearing cap must be aligned.

2. Position piston of number 1 cylinder to ignition TDC.
3. Remove engine cover.
4. Remove timing chain tensioner.
5. Carefully raise locking pawl of top slide rail and remove front cover at cylinder head (Fig. 16).
6. Insert a locking pin through 1st camshaft bearing cap into the hole in the inlet camshaft sprocket.
7. Counter hold the camshaft with an open end wrench to avoid damage and unbolt driver of inlet camshaft sprocket.
8. Remove top guide rail.

INSTALLATION - CYLINDER HEAD GUIDE RAIL
1. Carefully position the top guide rail onto the guide pins.
2. Counter hold the camshaft with an open end wrench and install driver of inlet camshaft sprocket. Tight bolt to 50 Nm (37 ft. lbs.).
3. Remove camshaft sprocket locking pin.
4. Carefully raise locking pawl of top guide rail and install front cover at cylinder head (Fig. 16).
5. Install timing chain tensioner with new gasket.
6. Install engine cover.
7. Reconnect negative battery cable.

WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHES.

8. Start engine and inspect for leaks.