ENGINE SECTION RED PART NUMBERS INDICATE NEW PARTS 6-87 1 2 3 4 5 6 7 8 9 10 11 CONTENTS ELECTRICAL FRAME FRONT END CONTROL WHEEL ENGINE DRIVE TRAIN FUEL EXHAUST GENERAL REFERENCE • Offering engine builders the most common sizes needed when installing performance cams or rebuilding motors. • Cam and pinion gears must be matched for pitch diameter to provide correct gear lash. Lf the gear lash is too tight, the motor will whine, if the gear lash is too loose, the motor will knock. • Most aftermarket cams come with red color coded gears. • A cam of a certain color code usually should be used with a pinion gear of the same color code, but machining tolerance variations in the crankcase and the cam cover may require the use of a larger or smaller pinion gear. • Gears are measured over two .105” gauge pins. • Made for Big Twin models with a tapered shaft. 1954/Early 1977 Late 1977/1989 PINION GEARS FOR BIG TWIN Model & Year Code .105” Pins Rpls. HD Part # Big Twin 1954/Early 1977 Red 1.4475/1.4480 24010-54 66050 Big Twin Late 1977/1989 White 1.4745/1.4751 24041-78 66069 Red 1.4729/1.4737 24043-78 66053 Black 1.4710/1.4715 24046-78 66070 Cam Side Parts & Crank Sensor OIL PUMP DRIVE GEARS FOR BIG TWIN Part 66079 Part 66080 Drive Shaft Drive Gear, 24 teeth fits Big Twin 1936/Later engines (except Twin Cam). Must be used with 6 teeth pinion shaft drive gear. (Rpls. HD 26345-73) Pinion Shaft Drive Gear, 6 teeth fits Big Twin 1954/1989 engines. Must be used with gear 66079 or HD 26345-73 (24 teeth) drive shaft drive gear. (Rpls. HD 26349-73A) Contains the following: 2 - bushing pins (Rpls. HD 271) 1 - pinion bushing (Rpls. HD 25582-73) 1 - needle bearing (case) (Rpls. HD 9058) 1 - cam bushing (cover) (Rpls. HD 25581-70) 1 - lock washer (Rpls. HD 25550-57) CAM/GEAR CASE NOSE CONE REBUILD KIT FOR BIG TWIN Save time, money and effort when you need to replace all the normal wear components in your cam/gear cover (nose cone) with this complete Rebuild Kit. Part 64605 Fits Big Twin Late 1973/1992 Model & Year Rpls HD Part # Touring Models 2001/2017, 32707-01C 66003 Softail Models 2001/2018, Dyna Models 2001/2017 & Sportster 2006/Later • Top quality crank position sensor. • Often overlooked electrical wear item. CRANK POSITION SENSOR
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