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4. Replace the sprocket if teeth are cracked or worn. See 5.7 TRANSMISSION SPROCKET, Cleaning and Inspec- for more information. 5. Inspect the needle bearings on the inside of the main drive NOTE If the main drive gear needle bearings and/or seal need to be 6.8 TRANSMISSION CASE, Assembly . Needle Bearing Replacement Wear safety glasses or goggles when removing or NOTES • . When replacing needle bearings, discard original retaining rings (1) and install replacement retaining • To install the inner main drive gear needle bearings and 1. See . Remove mainshaft seal (6). Remove retaining rings (1), needle bearings (2) and spacer (5) from 2. Remove and discard o-ring (4). 1 2 3 4 2 1 6 5 sm03036 1. Retaining ring (2) 2. Needle bearing (2) 3. Main drive gear 4. O-ring 5. Spacer 6. Mainshaft seal Figure 6-37. Main Drive Gear Assembly 1 2 sm03038 1. Original retaining ring 2. Replacement retaining ring Figure 6-38. Main Drive Gear Retaining Rings 3. See . Install clutch side needle bearing using an arbor press and the 0.400 in. step end of tool as shown. sm03040 Figure 6-39. Installing Clutch Side Needle Bearing in Main Drive Gear NOTE An alternative method is provided which allows the mainshaft 6.7 MAIN DRIVE GEAR AND BEARING, Removal 4. . Turn over tool and press in mainshaft seal using the 0.090 in. step with garter spring side down. 5. Install spacer. 6. See . Turn over the main drive gear in the arbor press. With the tool at the 0.188 in. step, press inner 6-22 2009 Dyna Service: Transmission |