Magazine for the auto service professional
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Circle 136 on Reader Service Card Long in the tooth... ...and proud of it! AISIN, a leading innovator for over 40 years producing quality, dependable OE products to the aftermarket. www.aisinaftermarket.com/asp ADS#11914 Timing Belt Kit Water Pump Fan Clutch Pulley Tower Hydraulic Tensioner Clutch Kit Clutch Hydraulics Oil Pump Timing Chain Cover Free Wheel Hub Automatic Transmission Fluid Antifreeze/Coolant Form In-Place Gasket Door Lock Actuator 62 | September/October 2014 tools. Caution: you MUST tighten it to the specifed value (usually about 65 ft.-lbs.) using a torque wrench. The second method requires you to remove the alternator from the vehicle and remove the rear housing from the alterna- tor. You then clamp the rotor in a vice. This eliminates the need for special tools, but complicates the job unless you are also rebuilding the alternator at the same time. Be careful not to damage the rotor or fan. The third method requires an impact wrench and torque stick. Place the alterna- tor in a vice and hold the pulley by hand or with a band wrench. With the impact on its highest setting, pull the trigger two or three times. The pulley's shaft will turn, but with a little luck the impact will turn faster. This method is the least desirable. And, it is hard to get the proper torque when installing a new pulley. You also risk dam- aging the rotor or new clutch pulley. However, this is the only method that works with many Mitsubishi Electric alter- nators, since most do not have a typical installation feature on the end. This method also requires you to reset the OAD clutch after installation. To do so, rotate the shaft in the overrun direction at least two times by hand until you can feel the spring force. Finally, install the new cap that comes with every OAD pulley. Many cavities are now grease flled and without the cap, it could get quite messy under the hood. Multi-rib accessory drive belts were com- monly made of neoprene and generally lasted about 50,000 miles, but since the mid-1990s, drive belts have been made of EDPM and can last up to 100,000 miles. The key words here are "up to." Check the belt, tensioner and clutch pulley every 50,000 to 60,000 miles. Since the OAD, belt and tensioner are a system, it is a good idea to replace them together. They likely have the same time and mile- age on them, so do your customer a favor and prevent a future breakdown due to a weak charging system or broken belt. At the very least, inspect these components whenever a belt is replaced. ● Connections