When it comes to ADPs and Solid Pulleys, looks can be deceiving. While these parts are similar in appearance, they operate quite differently.
We’ve compiled a list of frequently asked ADP questions.
Q: Are OADs, OWCs and Solid Pulleys interchangeable?
A: No. Each pulley is designed for specific vehicle applications.
Q: What is the service life of an ADP?
A: ADPs should be inspected at 50,000 miles along with the belt and tensioner. Service life is dependent on the duty cycle (city vs. highway), driving conditions, and seasonal temperature variations. Always install a new ADP when rebuilding the alternator and ensure the same ADP type pulley is installed on any new replacement alternator.
Q: Is there a special tool required to replace an ADP?
A: Yes. Visit your local parts store or contact your Gates Representative to purchase the toolkit.
Q: Where can I find information on which ADP "socket" goes with which ADP?
A: There are three ADP sockets to choose from: 91024-1(spline), 91024-2 (21mm Hex) and 91024-3 (17mm Hex). By matching the ADP configuration with the tool configuration, it should be easy to tell which socket fits which ADP. A technician should also be able to look at the ADP and figure out which socket will fit.
Q: Why does the tool kit show eight part numbers when there are only seven tools in the kit?
A: Tools 91024-4 (socket) and 91024-5 (driver with hex on one end, flared on the other) are located on the bottom left side of the kit. They are snapped together but if you pull them apart, you have eight tools.
Q: Which driver goes with which application?
A: The configuration of the shaft depends on the brand of the alternator. Once a technician determines which driver works for the application, it is likely that the driver will be the same one next time. However, there is always a chance the driver will not be consistent across all applications, so the driver may not be associated with specific applications.
Q: The Ford Crown Victoria uses a 17mm Hex driver but the Hex driver in that kit is not big enough. What do I do?
A: Part 91024-5 has a 17mm Hex on the end opposite the driver with the flared female end. The Hex end goes through the ADP and mates up with the alternator shaft and an Allen wrench is used in the female end.
Q: My customers are not sure how to use the tools. Where should I direct them for help?
Q: Why Gates?
A: Send them to the informative ADP Removal and Replacement video here. It will clearly explain how each tool is used in various applications.
As one of the world's leading manufacturers in the Automotive Aftermarket industry, Gates offers the most complete line of OE quality products, backed by unmatched field sales support and training program