how do i check timing marks? if timing belt jumps a tooth will valves colide with pistons?
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1992 Ford Escort Question: timing belt
Answer #1Brian Glastetter January 27, 2011, 19:46Master
Disconnect the negative battery cable.
Remove the accessory drive belt.
Remove the timing belt cover as outlined in this section.
Align the timing mark on the camshaft sprocket with the timing mark on the cylinder head.
Confirm that the timing mark on the crankshaft sprocket is aligned with the timing mark on the oil pump housing.
Loosen the belt tensioner attaching bolt.
Pry the tensioner away from the timing belt and tighten the attaching bolt.
Remove the spark plugs.
Install the RH engine mount and raise the vehicle.
Remove RH splash shield.
Remove the crankshaft damper as outlined in this section.
Remove the timing belt from the engine.
NOTE: Do not mix 1/2 round and trapezoidal belt tooth profiles. This can cause premature belt wear.
Install the timing belt over the sprockets in a counterclockwise direction starting at the crankshaft. Keep the belt span from the crankshaft to the camshaft tight while installing over the remaining sprocket.
NOTE: Belt is meant to run in a dry environment. For maximum belt life, no oil or belt dressing compound should be applied to the timing belt.
Loosen the belt tensioner attaching bolt, allowing the tensioner to snap against the belt.
Rotate the crankshaft clockwise two complete revolutions (720 degrees) stopping at top dead center. This will allow the tensioner spring to load the timing belt.
CAUTION: Do not rotate the crankshaft with the spark plugs installed.
NOTE: Do not turn the engine counterclockwise to line up the timing marks.
NOTE: After rotation, recheck camshaft and crankshaft timing marks for alignment. This will verify that the belt has not skipped a tooth during rotation.
Tighten the belt tensioner attaching bolt to 23-30Nm (17-22 lb-ft).
Install the crankshaft damper.
Install the splash shield.
Lower the vehicle.
Install the spark plugs.
Install the timing belt cover.
Install the accessory drive belt automatic tensioner.
Install the accessory drive belt. Refer to Section 03-05B.
Connect the negative battery cable.