PowerTap SL 2.4 - Manual (Page 33)

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 SL 2.4 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 SL
2.4 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.
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