Impreza WRX Wagon F4-2.0L DOHC Turbo (2002)
Timing Belt: Description and Operation
Timing Belt
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A single timing belt drives four camshafts (intake and exhaust camshafts on each bank). The belt also drives the water pump by its non-toothed
side.
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The timing belt teeth have a specially designed round profile which contributes to quiet operation. The timing belt is made of strong and inflexible
core cords, wear-resistant canvas and heat-resistant rubber material.
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A hydraulic automatic belt tension adjuster always keeps the belt taut to the specified tension. Any manual belt tension adjustment is unnecessary.
NOTE:
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The #1 piston is set at the Top Dead Center (TDC) when the piston-position mark on the crankshaft sprocket is aligned with the mark on
cylinder block.
** The #1 piston is set at TDC on the compression stroke when the piston-position mark on the camshaft sprocket is facing directly upward.
