Ford Transit 2002 Owner's Manual page 1193

NOTE: Carefully engage reverse gear.
10.
Check operation of the clutch control.
Start the engine, depress the clutch pedal
and wait approx. 2 seconds before
carefully engaging reverse gear. If gear
engagement is excessively noisy, remove
the small amounts of trapped air remaining
in the system by operating the clutch pedal
several times (max. 4-5 times), using the
full clutch pedal travel.
After waiting approx. 30 seconds, check
the operation of the clutch again. If gear
engagement is still excessively noisy,
repeat the previous steps.
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