Timing Chain Tensioner: Service and Repair

WARNING: New chain tensioners come with the spring under tension. Never remove the pin before the tensioner has been fitted.





INSTALLING A NEW TENSIONER
1. Cock the tensioner unit by pressing down on the ratchet and pushing in the tensioner.





2. Install the chain tensioner complete with gasket and tighten to 63 Nm (47 ft. lbs.).





3. Insert the spring and plastic guide pin into the tensioner body.
4. Install the plug, ensuring that the O-ring is properly seated an tighten to 22 Nm (16 ft. lbs.). As the plug is screwed in, the spring pushes the tensioning arm out, thus tightening the chain.
5. Check the timing setting by rotating the crankshaft two complete turns in a clockwise direction, lining up the timing marks again. The camshaft timing marks should now also still be in alignment.





6. Tighten the center-bolts in the camshaft sprockets to 65 Nm (48 ft. lbs.), using a second spanner across the flats on the shaft to stop it turning.