The timing belt found in 1st generation Toyota Tacomas, 3rd generation 4Runners, and T-100 Pickups require periodic replacement. From what I understand, belts on earlier models need to be replaced at 60,000 miles, and newer models at 90,000 miles. The purpose of this article is to point out the many steps that may be omitted in a routine belt change, and to show the use of an aftermarket service tool made by SnapOn and other companies. It follows the format of the Factory Service Manual (FSM), but I can't guarantee it's applicability for your particular vehicle or model year. Even though I haven't performed this service myself, I was fortunate to observe one of our readers performing it on his 1999 supercharged Tacoma.
To do this successfully at home you will need an assortment of hand tools, a 250 foot pound torque wrench, Snap-On tool number YA9730, a special tool to hold the crankshaft pulley, help from a friend, and considerable experience working on vehicles. The factory timing belt is less than $50, but most owners want to replace the water pump, thermostat, and all the drive belts such as the alternator, power steering, and air conditioning (if equipped). These additional parts, along with supplies such as coolant and sealant will put the total cost close to $200, which is typically about fifty bucks less than what a dealer would charge to replace just the belt.
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