BENDIX TCH-001-029 User's Manual
Contents
1. TechnicalBulletin Bulletin No PRO 01 29 Effective Date 10 30 86 Cancels N A Page 1 of 1 Subject POWERMISER 501 MACK RETROFIT INSTALLATIONS Kit 209926 When using kit 209926 to retrofit the Powermiser 501 compressor clutch on the Mack six cylinder engine it is necessary to replace the engine s existing compressor drive with the drive coupling 297125 provided in the kit The oil pump drive gear must be pressed off the existing drive and onto the kit s replacement drive coupling It has come to our attention that some older Mack engines used a one piece compressor drive and oil pump gear and therefore the gear cannot be pressed off Mack obsoleted the one piece drive however a few can still be found in rebuilt engines When the one piece drive is encountered it is necessary to purchase a separate engine oil pump drive gear from Mack To determine the correct Mack part number count the teeth on the oil pump drive gear of the one piece unit and refer to the chart below MACK ONE PIECE POWERMISER ENGINE OI M COMPRESSOR DRIVE DRIVE COUPLING 297125 DRIVE GEAR P IN KIT 209926 COMPRESSOR DRIVE END ENGINE OIL PUMP DRIVE GEAR PRESSED ON HERE No of Teeth on Mack Part No for Oil Pump Gear of Separate Oil Pump One Piece Drive Drive Gear 13 682 GB 113 15 683 GB 195 17 683 GB 1154
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