All stock Harley-Davidson motorcycles come equipped with a chain driven primary. A Harley owner with a desire to spend less time and money maintaining his Harley should consider converting the chain to a belt driven primary. To convert to a belt drive, you must purchase an aftermarket belt drive as Harley-Davidson does not offer a belt drive. Belt drives are reasonably priced and you can install one with simple hand tools.
- Skill level:
- Moderately Challenging
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Things you need
- Drain pan
- Allen wrench
- Standard wrench set
- Standard socket set
- Solid bar
- Torque wrench
Remove the magnetic drain plug with a wrench from underneath the outer primary chain case on the left-hand side of the motorcycle. Drain the fluid into a drain pan.
Remove the 14 bolts that hold the primary chain case, inspection cover and clutch cover in place with an Allen wrench.
Remove the clutch pulley assembly by removing the retaining clip, clutch pulley adjuster and clutch basket. Remove the retaining clip with a pick took and pull the pulley adjuster and basket out by hand. Remove the primary chain adjuster by loosening the bolt holding it in place with a wrench. Remove the compensating sprocket with a wrench and socket. Once you remove these units, the chain is removable by hand.
Install the new support bearing and seal by greasing and inserting it in the inner primary chain case. Press the seal into place with a solid bar slightly smaller in diameter than the seal.
Clean the inner primary chain case with a rag to ensure no foreign material enters the new pulleys or transmission oil.
Apply Loctite to inside splines of the clutch hub.
Install the new belt drive pulleys -- one is the new compensating sprocket pulley and the other is the new clutch pulley -- with the belt wrapped around the pulleys onto the clutch hub. Ensure the pulleys have adequate clearance inside the inner primary chain case.
Rotate the compensating sprocket with a wrench and socket to ensure the belt tracks straight and not in towards the motor.
Install and tighten the hub and compensating sprocket nuts with a torque wrench according to the torque specifications in your Harley-Davidson owner's manual.
Reinstall the outer primary chain case, inspection and clutch covers, gaskets and bolts -- with an Allen wrench. Refill the primary with transmission oil according to the owner's manual.
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