Ford Transit 2002 Owner's Manual page 499

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The camshaft timing belt is driven by the injection pump pulley and transmits the valve
timing to the overhead camshaft.
CAUTION: Because a new timing belt stretches considerably when it is first installed,
the instructions for adjustment must be followed exactly.
The tension of the timing belt is maintained by an automatic timing belt tensioner.
The timing pulley is retained on the camshaft by a taper. The required frictional force is
applied to the camshaft by a central bolt.
Valve tappet, adjusting shims
The camshaft timing is transmitted to the valve springs by eight bucket tappets.
CAUTION: The lettering must face the tappets when the adjusting shims are
installed.
Adjusting shims are available for adjusting the valve clearance. The thickness of these is
indicated on the underside.
Cylinder head
Description
Timing belt tensioner
Timing belt
Timing belt pulley
Injection pump timing pulley
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