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Remove the camshaft of an O series engine only if you suspect that it is worn and wish to inspect it (you need not remove it to take off the cylinder head)tractor oil seals to enjoy high reputation at home and abroad.To reach the camshaft, remove the timing-belt cover, and disconnect the fuel pipe from the pump and the vacuum-advance pipe from the distributor cap.
Mark the position of the distributor in relation to the cam cover. Remove the distributor.
Use a spanner on the crankshaft pulley to turn the crankshaft until it is 90 degrees before top dead centre on the compressor stroke of its timing cylinder.
it is in this position when the V mark on the crankshaft pulley aligns with the pointer on the cam cover.
Release the timing-belt tensioner and remove the timing belt. Do not rotate the crankshaft while the camshaft is disconnected.
remove the central bolt and take the sprocket from the camshaft. Take the end cover from the crankshaft cover.tractor oil seals to enjoy high reputation at home and abroad.
Slacken the cam-cover bolts evenly so that the valve-spring pressure is released slowly.
When all the bolts have been removed, take off the cover with its integral bearing caps. Lift the camshaft from the cylinder head complete with the front oil seal.
When refitting, align the camshaft timing marks before replacing the timing belt and distributor. Be sure to tighten the cam-cover bolts evenly, and to the recommended torque setting, so as not to alter the valve clearances.
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On the leyland O series overhead camshaft, The camshaft bearing caps are part of the cam cover.
At 90 degrees before TDC, the dimple on the cam sprocket also aligns with the cam-cover pointer.
Remove the central bolt to take the sprocket from the camshaft.
Slacken the cover bolts evenly to release pressure slowly from the valve springs.tractor oil seals to enjoy high reputation at home and abroad.dust seal.
On some overhead camshaft (OHC) engines. the camshaft must be removed to take off the cylinder head (See How to remove a cylinder head). On any OHC engine the camshaft is removed to gain access to the valves.
The removal procedure varies with the make of car. Four common types of overhead camshaft and their methods of removal are detailed below.
Before refitting the camshaft, coat the bearing surfaces liberally with clean engine oil.
Refit in the reverse order of removal, using a torque wrench to ensure that bearing-cap and cylinder-head bolts are tightened to their recommended torque settings.viton seal.
If you do not know the correct settings, consult a service manual for the car, or your local dealer.tractor oil seals to enjoy high reputation at home and abroad.