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Setting tappets
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<blockquote data-quote="Pennine Ploughing" data-source="post: 74186" data-attributes="member: 999"><p>To set the timing chain, follow this procedure…</p><p>To set the camshaft, first of all, set the tappet clearance on number 8 valve (the valve at the back of the engine closest to the steering wheel) to 0.023in (when the cam and rocker is in its lowest position). Then set number 7 valve to 0.025in.</p><p>Turn the engine away from TDC. (The keyway in the front of the crankshaft [that holds on the front pulley] is at the bottom when cylinders 1 and 4 are at TDC.) Therefore position the keyway on the right looking at the front of the engine (ie. 3 O’clock position – always turn it clockwise). You do this so that the pistons do not hit the valves.</p><p>Now remove the timing chain, camshaft sprocket and the chain tensioner.</p><p>Next turn the camshaft clockwise until vavles 7 and 8 are “on the rock” (ie. exhaust just closing, inlet just opening). Now the camshaft is in the correct position for the timing procedure.</p><p>It is now safe to move the crankshaft clockwise for number 1 cylinder to be on TDC. You can determine TDC without using the flywheel marks (ie. with engine connected to transmission) by using the flywheel pin hole as a reference point. Slide in the pin to the locating hole in the flywheel and then fix a protractor to the crankshaft, and place a pointer on the engine which will give accurate readings on the protractor. Then remove the flywheel pin and turn the engine clockwise 16 degrees (as measured on the protractor), and therefore you are now on TDC for number 1 cylinder and are in the correct position to fit the timing chain, sprocket and tensioner.</p><p>Now don’t forget to re-set valves 7 and 8 to their normal running valve clearances</p></blockquote><p></p>
[QUOTE="Pennine Ploughing, post: 74186, member: 999"] To set the timing chain, follow this procedure… To set the camshaft, first of all, set the tappet clearance on number 8 valve (the valve at the back of the engine closest to the steering wheel) to 0.023in (when the cam and rocker is in its lowest position). Then set number 7 valve to 0.025in. Turn the engine away from TDC. (The keyway in the front of the crankshaft [that holds on the front pulley] is at the bottom when cylinders 1 and 4 are at TDC.) Therefore position the keyway on the right looking at the front of the engine (ie. 3 O’clock position – always turn it clockwise). You do this so that the pistons do not hit the valves. Now remove the timing chain, camshaft sprocket and the chain tensioner. Next turn the camshaft clockwise until vavles 7 and 8 are “on the rock” (ie. exhaust just closing, inlet just opening). Now the camshaft is in the correct position for the timing procedure. It is now safe to move the crankshaft clockwise for number 1 cylinder to be on TDC. You can determine TDC without using the flywheel marks (ie. with engine connected to transmission) by using the flywheel pin hole as a reference point. Slide in the pin to the locating hole in the flywheel and then fix a protractor to the crankshaft, and place a pointer on the engine which will give accurate readings on the protractor. Then remove the flywheel pin and turn the engine clockwise 16 degrees (as measured on the protractor), and therefore you are now on TDC for number 1 cylinder and are in the correct position to fit the timing chain, sprocket and tensioner. Now don’t forget to re-set valves 7 and 8 to their normal running valve clearances [/QUOTE]
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