PowerTap Pro - Manual (Page 28)

28
MAINTENANCE & SPECIFICATIONS
The Powertap uses a high quality hub designed to
withstand the rigors of training and racing. With
a little regular maintenance, you will enjoy years of
trouble free use from your Powertap. If not familiar
with working on hubs, you should take your
Powertap to a bike shop with qualified mechanics
for service.
Serviceable and Non-Serviceable Parts
The power measuring components inside the
Powertap hub are highly complex, and should only
be serviced by a Powertap Service Center. The rest
of the hub is very serviceable and similar to other
popular high quality hubs in design. The axle, ball
Cleaning
To clean the hub and components, use soapy water
and soft bristled brush. If needed, mild
biodegradable degreasers can be used sparingly.
Do not use harsh degreasers on any of the plastic
parts, rubber seals, or bearings. Do not use a power
sprayer.
Care For Electronics
The Powertap is water resistant. However, should
moisture enter the hub, remove the battery cover
and let dry overnight. Short term exposure to
moisture should not damage the Powertap if it is
thoroughly dried.
Batteries / O-rings
Batteries should be replaced when the battery indi-
cators denote low computer or hub batteries
(see page 8). To replace computer batteries,
remove the computer from the mount. Remove the
battery cover on the back of the computer,
exchange the battery, and replace cover as in figure
11. To replace hub batteries, remove the battery
cover on the non-drive side with the two 2.5mm hex
bearings, cones and freehub body may be removed
without further disassembly of the hub or removing
the battery cover. The sealed axle bearings on the
drive and non-drive side are replaceable by
Powertap ONLY. Do not attempt to remove sealed
bearings on the drive or non-drive side.
Bearing Adjustment
Hubs should be checked occasionally for cone
adjustment and bearing play. Should an inspection
find excessive play in the bearings, tighten the
cones and locknuts accordingly. If gritty or rough
bearings are found, the hub should be disassem-
bled, cleaned and overhauled. Repack or replace
any bearings as necessary. If a problem exists in the
sealed bearings please contact Powertap. Re -
assemble as shown in figure 10.
Figure 10: Hub assembly