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2004 Subaru WRX Timing Belt Installation

The Subaru Impreza is a four-door passenger vehicle with all-wheel drive which has been in production since 1992. The WRX is a version of the Impreza that has a turbocharger. The 2004 model features a four-cylinder, 2.0-liter engine with a double overhead camshaft. This engine uses a timing belt to drive the camshafts with the crankshaft, allowing the cylinder valves to open and close in the correct sequence.

Instructions

1

Remove the cable on the negative battery terminal with a socket wrench. Disconnect the V-belt and the crankshaft pulley from the engine. Remove the left timing belt cover, right timing belt cover and front timing belt cover in that order.

2

Disconnect the guides for the timing belt with a socket wrench if your vehicle has a manual transmission. Remove the No. 1 idler pulley, timing belt and the No. 2 idler pulley in that order. Disconnect the timing belt tension adjuster assembly.

3

Push the adjuster rod on the timing belt adjuster down with a constant pressure of 66 lbs. until the end of the adjuster rod reaches the surface of its cylinder. Place a 0.08-inch Allen wrench into the pin hole of the cylinder to hold the adjuster rod in place.

4

Install the timing adjuster and tighten its retainers to 29 foot-pounds with a torque wrench. Attach the the No. 2 idler pulley and No. 1 idler pulley in that order. Tighten the retainers for both pulleys to 29 foot-pounds.

5

Turn the crankshaft sprocket clockwise to align its timing mark with the timing mark on the oil pump. The double lines on the left intake camshaft must align with the double lines on the left exhaust camshaft sprocket. The double lines on the right intake camshaft must align with the double lines on the right exhaust camshaft sprocket.

6

Place the new timing onto the sprockets with the arrow pointing in the clockwise direction. The "A" mark on the timing belt must align with the timing mark on the crankshaft, The "B" mark aligns with the left intake cam shaft, the "C" mark aligns with the timing mark on the left exhaust camshaft, the "D" mark aligns with the timing mark on the right intake camshaft and the "E" mark aligns with the right exhaust camshaft.

7

Attach the belt idlers and tighten their mounting bolt to 29 foot-pounds with a torque wrench. Remove the Allen wrench from the cylinder on the timing belt adjuster.

8

Replace the guide for the timing belt if your vehicle has a manual transmission. Ensure that the clearance between the guide and the timing belt is between 0.019 and 0.059 inches Tighten the retainers for the timing belt guide to 7 foot-pounds.

9

Replace the timing belt covers and tighten their mounting bolts to 3.5 foot-pounds with a torque wrench. Connect the crankshaft pulley and tighten its mounting bolt to 94 foot-pounds. Install the V-belt.

Posted by Unknown at 2:45 PM

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Labels: 2004, belt, installation, subaru, timing, wrx