Maintenance & Specifications, Bearings, Freehub

Maintenance & Specifications

The following information will help you keep your PowerTap SL2.4 running properly. If you are not familiar with hub maintenance please consult a professional

bicycle mechanic before servicing.

During the course of any repair do not remove the torque tube. There are no user serviceable parts inside. Special tools are required for reassembly and calibration. If problems are suspected contact Saris Cycling Group.

BEARINGS

The power measuring components inside the PowerTap SL2.4 are highly complex and should only by serviced by Saris Cycling Group. The bearings are sealed type 6901RS and do not require replacement. Field replacement can cause permanent damage to the power measuring electron- ics and result in compromised sealing and performance. If bearing problems are suspected please contact Saris Cycling Group at 1-800-783-7257 for a return authorization. The PowerTap SL2.4 uses a modern 4 bearing design and does not require any tensioning adjustment.

FREEHUB

The grease in the freehub pawls should be replaced if it becomes contaminated with water. Replace the seal at the same time, contact Saris Cycling Group for replacement parts. Saris Cycling Group recommends the following types of grease to ensure proper functioning: -Kluber Isoflex NB52 o

-Dupont Krytox GPL226

Warning: Failure to use the proper grease on the freehub pawls could result in engagement problems.

FREEHUB REPLACEMENT

-See Figure 28 for illustrations

-Use 5mm hex wrench and 17mm bike wrench and remove both end nuts from the axle. -Remove the axle

-Remove the freehub and spacers.

-Remove all old grease from the freehub ratchet ring.