|
|
2.25 LITRE PETROL AND DIESEL ENGINE Using rule, determine the exact mid-point between the two marks and a third mark. .. 17. Remove the dial indicator, and turn the camshaft until the middle mark lines up with the pointer. number one cylinder exhaust tappet roller should now be resting in the centre of four degree flat period of the cam and the camshaft and are in their correct relationship. 18. Fit the crankshaft chain whee! with the large shoulder towards the cylinder block. fit the timing chain keeping i t taut on the drive side. Should i t be impossible to obtain a taut fit, remove the chain wheel and position i t in one of the five remaining keyways until the best position is obtained. It is preferable to choose a keyway which gives slightly tight chain on drive side rather than a slack one. 20. Secure the camshaft chain wheel to the camshaft with a new, special, micro encapsulated treated to t h e correct torque figure - See Petrol 21. Fit and adjust the timing chain damper so that there is maximum clearance of (0.010 i n ) between the timing chain and damper. Tighten the two bolts and secure with new lock tabs. . ... FIT TIMING CHAIN TENSIONER Assemble the timing chain tensioner in accordance with t h e illustration in “Dismantling”. 2. Compress the assembly against the spring and fit to the engine whilst engaging ratchet pivot bolt in cylinder block. 3 . Ensure that the piston housing locates on the dowels and single stud and the cylinder spigot fits in the cylinder block. Allow the jockey wheel to take up the slack in the chain. Tighten the retaining n u t and two bolts to secure t h e assembly. Do not rotate enginc, see ‘tappet adjustment’. 23 |