How do you adjust the timing belt on 1992 Honda Accord LX?

Answer 1

Before starting on setting up the timing marks, the crankshaft and camshaft must be positioned on the number one cylinder. This is an interference engine, so rotation of the crank and cam are limited. Making the assumption that you are not on the number one cylinder then some addition work will need to be done. Remove the rocker arm assemble. This will allow all valves to be closed all the time. Rotate the crankshaft to top dead center (White mark on the flywheel). Rotate the cam shaft so that the rib of the timing belt pulley with the word up, which is stamped on the Pulley is vertical. That is the word up is on the highest point in the rotation of the cam shaft. Reinstall the rocker arm assemble. The camshaft pulley has two marks stamped in the teeth 90 degrees right and left of the word "Up". Align these marks with the top of the head. Check that the crankshaft is still on the white mark. Loosen the nut for the idler pulleys. You can now move the idler pulley up and down. There is a slot on the bracket of the idler pulley for the cam timing belt where a setup bold can be installed. Install this bolt but do not tighten it yet. Press down on the idler against the spring tension and tighten the setup bolt. This will keep you from fighting the spring when you are putting the timing belt on. Install the timing belt, remove the setup bolt, tighten the nut for the idler pulleys and rotate the crankshaft counter clockwise two turns until the word up on the camshaft pulley is at the top and the crankshaft is at top dead center. Do not turn the crank clockwise at all. If you miss the TDC go around counter clockwise another two turns. Turning the engine allows the belt to track. Loosen the idler nut and retighten it. This allows belt tension to set after the belt has found it tracking point. Recheck that the cam marks are aligning with the head and that the crank is at top dead center. The second belt drives the counter balance shafts. To set this belt up, make sure that the crank is TDC on number one (word up at the top). The front pulley has a mark stamped in the teeth and is set to a raised mark on the front of the engine casting. There is a bolt on the back of the engine about three inches from the back pulley. This bolt is a plug for a setup hole. Remove the bolt. Use a quarter inch drill bit and insert it in the hole. Turn the back pulley while feeling for a hole in the counter shaft with the drill bit. It feels a little strange but you'll know when you hit the hole. Once the drill bit is in the hole of the shaft, just center the bit in the setup hole. Loosen the idler nut and install the belt. Tighten the idler nut and go through the drill of rotating the engine two turn. Loosen the idler nut and retighten. Recheck that all mark lineup at TDC.