The 1998 Izusu Trooper three.5L is an interference engine. If the timing belt stretches previous its helpful life–the tensioner can not put sufficient rigidity on the timing belt–it might trigger the valves to hit the pistons, inflicting excessive engine harm. The producer recommends altering the timing belt each seventy five,000 miles. It takes about three hours to exchange the timing belt on this engine. A particular device is required and may be bought at the dealership.
1998 Isuzu Trooper Replace the Timing Belt Instructions
Remove the air cleaner assembly and the higher radiator fan shroud, utilizing the applicable sockets. Remove the accessory drive belt by loosening the accessory drive belt tensioner and lifting the belt off the pulleys. Remove the cooling fan and fan pulley, utilizing the applicable sockets.
Remove the accessory drive belt tensioner and information pulley by unbolting them and pulling them off the block. Vacuum the Freon out of the system utilizing a reclaimer. Remove the air-con compressor and the energy steering pump utilizing the acceptable sockets.
Remove the crankshaft pulley bolt utilizing particular crankshaft pulley holding device #J-8614-01. Remove the crankshaft pulley and the three timing belt covers. Flip the crankshaft clockwise till the timing mark at the three o’clock place on the crankshaft, the timing mark on the proper camshaft (as you’re going through the engine) is at 2 o’clock, and the timing mark on the left camshaft is at the eleven o’clock place. The No. 2 cylinder have to be at top dead center. If not, flip the engine over till the marks line up and the No. 2 cylinder is on prime lifeless middle. The firing order is 1-2-3-4-5-6. The No. 1 cylinder is the first cylinder on the passenger facet, and the No. 2 cylinder is the first cylinder on the driver’s aspect.
Remove the timing belt tensioner bolts, the auto tensioner and the timing belt. Verify the tensioner to see whether it is leaking oil. In that case, change it. Press the tensioner pushrod in, utilizing a vise or press, till a 1.four mm pin may be inserted into the gap on the physique of the tensioner. This holds the pushrod in place.
Install the timing belt, beginning on the camshaft sprockets and the water pump pulley, ensuring the white strains on the belt are lined up with the sprockets’ timing marks. Route the timing belt all the way down to the crankshaft socket.
Install the crankshaft pulley quickly. Hand-tighten the bolt. Flip the crankshaft pulley clockwise simply sufficient to take up the slack in the timing belt. Preserve rigidity on the driver’s aspect of the belt, watching the timing marks to make sure they keep aligned. Push the tensioner pulley towards the belt utilizing your hand. Bolt the tensioner to the block, tightening the bolts to 18 foot-kilos of torque. Remove the 1.four mm pin from the tensioner.
Flip the crankshaft clockwise twice and line up the timing marks. If the timing marks don’t line up, take away the timing belt and repeat the process. If the marks line up, take away the crankshaft bolt and pulley.
Install the remainder of the components in reverse order of removing. Install the crankshaft pulley, utilizing the crankshaft pulley holding instrument #J-8614-01 to carry the crankshaft pulley. Tighten the crankshaft pulley bolt to 123 foot-kilos of torque. Vacuum the air-con system with the reclaimer, then add Freon.
[taken from ehow.com]
