Kalkhoff Kalkhoff User Manual

Contents

Kalkhoff Kalkhoff User Manual Manual pdf 22 page image

I General User Manual 2114 Bottom bracket and cranksChainrings are wear parts. Their service life depends onvarious factors, e.g.• maintenance and care,• type of use and• distance travelled.15 Checking the bottom bracketThe cranks must be securely fastened as this couldotherwise damage the crankset.› The cranks can come loose which is why you shouldregularly check whether they are securely fastenedby attempting to rock them to and fro.› If there is play in the cranks, have the bike checkedand the cranks fastened securely by a professionalbike workshop .If your bike has a carbon frame and a bottom brackethousing for a BB30 bottom bracket please note thefollowing:In this case you can fit an adapter so that a bottombracket with conventional BSA thread can be used.However, bear in mind• You can only install the adapter if the frame iscompletely undamaged. Repairing a defectiveBB30 housing serves no purpose. If it is notinstalled correctly, the bottom bracket housingmay be damaged which would render the war-ranty void. This kind of adapter should only befitted by a specialist cycle shop.• Once the adapter has been fitted in the carbonframe it cannot be removed.16 Wheels16.1 Checking the wheelsThe wheels connect the bike with the surface you are rid-ing on. The wheels are subject to a particularly high levelof stress due to unevenness of the riding surface and theweight of the rider.The wheels are carefully checked and trued prior to de-livery. However, the spokes may settle when you ride thefirst kilometres on your bike.› Have the wheels checked again and trued if neces-sary after the first 100 kilometres by a specialistcycle shop.› You should subsequently regularly check the ten-sion in the spokes and have loose or damagedspokes replaced, and/or have the wheel trued, by aspecialist cycle shop.The wheel can be attached to the frame and fork in a num-ber of different ways. In addition to the standard systemsin which the wheel is held on by axle nuts or quick-releasedevices, different types of floating axles exist. These canbe held in place by a screw connection or different typesof quick-release devices. If your bike has a floating axle,please also refer to the enclosed manufacturer's user man-ual or visit the web pages of the relevant manufacturer inthe Internet.Tighten all screws to the prescribed torque as other-wise screws could shear off and components couldcome loose or detach altogether (see ➠ Chapter 30"Technical data").16.2 Checking the hubsTo check the hub bearings, proceed as follows:› Lift the wheel and spin it.› Check whether the wheel continues to turn throughseveral revolutions before it stops moving. If itstops suddenly, the bearing is damaged. This doesnot apply for front wheels with hub dynamos.› To determine whether there is play in the hub bear-ing, try rocking the wheel in the bike fork or rear