Changing the timing belt on a 1993 by means of 1997 Toyota Corolla requires a number of particular instruments, all of which can be found at any Toyota supplier. The engine is a 1.6L four-cylinder engine. It’s a freewheeling engine, which implies that ought to the belt stretch previous its helpful life, engine injury more than likely is not going to happen. Toyota doesn’t present a really helpful interval for altering the timing belt, however earlier service use and historical past means that the timing belt needs to be modified each 60,000 miles.
Toyota Corolla Timing Belt Replace Instructions
Disconnect the battery floor cable and lay it apart, guaranteeing that it doesn’t contact steel. Jack up the front of the Corolla utilizing the ground jack, and assist it with jack stands. Take away the best wheel utilizing the lug wrench. Take away the best splashguard utilizing the suitable sockets. Take away the windshield washer reservoir utilizing the suitable socket. Unbolt the cruise management actuator and remove it utilizing the suitable sockets. Loosen the accent drive belt tensioners to launch pressure on the belts. Carry the belts off the pulleys.
Help the engine with the ground jack by jacking it up simply sufficient to the touch the underside of the oil pan. Take away the appropriate engine mount utilizing the suitable brackets. Unbolt the air con compressor, however don’t remove the air-con traces. Transfer the compressor out of the best way. Take away the water pump pulley, valve cowl, higher timing belt cowl and the center timing belt cowl utilizing the suitable sockets.
Flip the crankshaft clockwise till the timing mark on the crankshaft pulley strains up with the dot on the block on the 1 o’clock place. Examine the timing mark on the camshaft. The small gap within the sprocket ought to line up with the dot on the pinnacle on the 12 o’clock place. If it’s not lined up, flip the crankshaft yet one more flip, and each marks will line up.
Take away the crankshaft pulley bolt utilizing the holding device and deal with. Pull the pulley off utilizing the puller. Take away the lower timing belt cowl and belt information utilizing the suitable sockets. Verify that each timing marks are nonetheless lined up. Loosen the tensioner bolt and push the tensioner away from the belt. Tighten the bolt simply sufficient to carry the tensioner out of the way in which. Elevate the timing belt off the sprockets and pulleys.
Take away the tensioner pulley. Spin the pulley in your hand. Should you hear it squeaking or grinding, exchange it. If it has any resistance, change it. Take away the tensioner spring and measure it. If the spring just isn’t 1.forty inches from finish to finish on the 4A-FE engine (code is on the sticker on the hood) or 1.25 inches on the 7A-FE engine, substitute the tensioner spring. Set up the tensioner pulley and spring. Test that the timing marks are nonetheless lined up.
Take a look at the timing mark on the crankshaft. In case your engine has a dot on the block that strains up with a notch within the pulley, set up the timing belt in a counterclockwise path, beginning on the crankshaft, working as much as the camshaft sprocket and conserving pressure on the belt between the 2. Convey the belt down behind the tensioner.
In case your engine has a gauge on the block and a notch within the pulley, put the timing belt across the backside of the crankshaft sprocket. Set up the belt information, the timing belt lower cowl, the crankshaft pulley and the bolt. Tighten the pulley bolt frivolously. Make certain the crankshaft timing marks are lined up. Working counterclockwise, convey the belt as much as the camshaft, holding rigidity on the belt between the 2 sprockets. Take away the plug from the lower timing belt cowl.
Loosen the tensioner bolt. Flip the crankshaft clockwise two turns till each timing marks line up. Tighten the tensioner bolt to 27 foot-kilos of torque. Apply a pressure of four.four lbs. to the belt, midway between the camshaft sprocket and the crankshaft sprocket. If the deflection just isn’t between zero.20 inches and zero.24 inches, repeat the tensioning course of.
Take away the crankshaft pulley bolt (if it was reinstalled). Set up the remainder of the elements in reverse order of elimination. Tighten the crankshaft pulley bolt to 87 foot-kilos of torque.
[taken from ehow.com]
