Removal
1. Disconnect negative battery cable. Raise and support vehicle. Remove engine under cover.
2. Lower vehicle. Remove radiator coolant reservoir, and set aside. Remove electric cooling fan
and radiator shroud.
3. On Impreza and Forester, remove accessory drive belt cover. On all models, remove accessory
drive belts.
4. Hold crankshaft pulley stationary, and remove crankshaft pulley center bolt. Remove
crankshaft pulley. Remove timing belt covers.
5. Turn crankshaft to align crankshaft and camshaft timing notches with marks on rear timing
cover and engine block. See Fig. 1 and Fig. 2 . On manual transmission models, remove timing
belt guide from top of crankshaft pulley.
6. On all models, if reusing old belt, use White paint to mark timing belt in relation to sprocket
timing marks. See Fig. 3. Also mark timing belt direction of travel. On 2000 and newer
vehicles, count number of teeth between marks. For correct count, see INSTALLATION
MARK MEASUREMENT SPECIFICATIONS table.
7. Remove No. 2 timing belt idler pulley. See Fig. 4. Remove timing belt. Remove timing belt
automatic tensioner with rod facing up.
Inspection
1. Inspect timing belt for wear on rounded edges of drive teeth. Inspect belt for signs of oil
contamination. Replace belt if it is damaged or contaminated.
2. Inspect belt automatic tensioner oil seals for leaks. Slight trace of oil at rod oil seal does not
indicate a problem. Inspect rod ends for abnormal wear and scratches.
3. Measure extension of rod beyond tensioner body. Holding tensioner with rod facing up, rod
extension should be .204-.244″ (5.2-6.2 mm). See Fig. 5. Replace automatic tensioner if rod
extension is not as specified.
CAUTION: Always use a vertical type pressing tool to compress
automatic tensioner rod. DO NOT use a bench vise to
compress rod. It may take more than 3 minutes to compress

Source

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