Subaru IMPREZA 2002 Service Manual page 61

I
CAMSHAFT DRIVE BELT
PERIODIC MAINTENANCE SERVICES
B: INSTALLATION
1. SOHC MODEL
To install, reverse order of removal procedures.
<Ref. to ME(S0HC)-47, Timing Belt Assembly.>
2. DOHCMODEL
To install, reverse order of removal procedures.
<Ref. to ME(D0HC TURBO)-48, Timing Belt As-
sem bly.>
CAUTION:
When installing the timing belt, be sure to align
all alignment marks on the belt with corre-
sponding marks on the sprockets. If incorrectly
installed, interference between pistons and
valves may occur.
C: INSPECTION
1. SOHC MODEL
1) Remove the left and right timing belt covers.
2) While cranking engine at least four rotations,
check the timing belt back surface for cracks or
damage. Replace the faulty timing belt as needed.
3) Measure the timing belt width W. If it is less than
27 mm (1.06 in), check the idlers, tensioner, water
pump pulley and cam sprocket to determine idler
alignment (squareness). Replace the worn timing
belt.
I
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4) Install the left and right timing belt covers.
2. DOHCMODEL
1) Remove the left and right timing belt covers.
2) While cranking engine at least four rotations,
check the timing belt back surface for cracks or
damage. Replace the faulty timing belt as needed.
3) Measure the timing belt width W. If it is less than
30 mm (1.1 8 in), check the idlers, tensioner, water
pump pulley and cam sprocket to determine idler
alignment (squareness). Replace the worn timing
belt.
4) Install the left and right timing belt covers.
GI0143
PM-13