REMOVAL & INSTALLATION
3Y-EC and 4Y-EC Engines
- Disconnect the negative battery cable.
- Remove the right front seat.
- Remove the engine service hole cover.
- Drain the coolant.
- Disconnect the radiator inlet hoses, radiator breather hose, reservoir tank hose and remove the radiator assembly.
- Remove the fan assembly along with the water pump, if needed, as previously outlined.
- Remove the distributor assembly as previously outlined.
- Remove the cold start injector.
- Remove the crankshaft pulley bolt and, using a suitable pulley puller, remove the crankshaft pulley.
- Remove the timing chain cover retaining bolts and pry off the timing chain cover.
- Remove the 2 timing chain tensioner bolts and remove the chain tensioner.
- Using a suitable camshaft gear holding tool, remove the camshaft sprocket bolt.
- Using a suitable puller, uniformly remove the camshaft sprocket together with the crankshaft sprocket and chain.
- Remove the timing chain cover seal as follows:
- Using a suitable punch and hammer, tap out the old oil seal from the cover.
- Using a suitable seal driver and hammer, drive in a new oil seal until the surface is flush with the edge of the timing chain cover.
- Apply some high temperature multipurpose grease to the lip of the oil seal.
If the timing chain cover is still attached to the engine, use a suitable seal puller to remove the seal and use the rest of the above procedure to finish the job.
- Set the key of the crankshaft sprocket facing upward.
- Align the set key of the camshaft sprocket with the mark on the thrust plate.
- Install the sprocket onto the timing chain. Align the timing marks of the timing chain and sprocket.
- Uniformly install the chain together with the sprockets.
- Apply a light coat of engine oil on the threads and under the bolt head of the camshaft sprocket bolt. Using a suitable camshaft gear holding tool, install the camshaft sprocket bolt. Tighten it to 67 ft. lbs. (90 Nm).
- Install the chain tensioner with the 2 bolts and tighten the bolts to 13 ft. lbs. (18 Nm).
- Install a new timing chain cover gasket and install the chain cover and bolts. Tighten the bolts to 52 inch lbs. (6 Nm).
- Using a plastic-faced hammer, tap in the crankshaft pulley. Apply a light coat of engine oil on the threads and under the bolt head of the pulley bolt. Install the bolt and tighten the bolt to specifications.
- Install the cold start injector.
- Install the distributor assembly as previously outlined.
- Install the fan assembly along with the water pump as previously outlined.
- Install the radiator assembly and reconnect the radiator inlet hoses, radiator breather hose and reservoir tank hose.
- Refill the coolant system.
- Reconnect the negative battery cable. Connect a timing light and tachometer.
- Start the engine and set the ignition timing. If the engine is hard to start, have some one turn the distributor left and right very slowly until the engine starts. Once this has happened, use your timing light to readjust the timing properly. Recheck the idle speed adjustment. Check for leaks and add coolant as necessary.
- Install the engine service hole cover and install the right seat.