Impreza L Sport Wagon F4-2.2L SOHC (1999)
Timing Belt: Description and Operation
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A single timing belt drives two camshafts (one in the left bank and one in the right bank). The back of the belt also drives the engine coolant pump.
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The timing belt teeth have a specially designed round profile to provide quiet operation. The timing belt is composed of a strong and inflexible
core wire, a wear-resistant canvas and heat-resistant rubber material.
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A hydraulic automatic belt tension adjuster constantly maintains specified belt tension to properly drive the camshafts, as well as to provide a "
maintenance-free" advantage.
NOTE:
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#1 piston is set at TDC (Top Dead Center) when piston-position mark on crankshaft sprocket is aligned with mark on cylinder block.
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#1 piston is set at TDC (Top Dead Center) on compression stroke when piston-position mark on camshaft sprocket is aligned with mark on
belt cover.
