I General User Manual 5927.10 Handlebar tapes and handle gripsHandlebar tapes and handle grips are subject to function-related wear and therefore may need to be replaced.› Check regularly that the handles are securelyseated.27.11 Hydraulic oils and lubricantsThe effectiveness of hydraulic oils and lubricants decreas-es over time. If lubricants are not replaced, this increasesthe wear of the relevant components and bearings.› Clean and relubricate all relevant components andbearings regularly.› Have the brake fluid for disc brakes checked regu-larly, and replaced if necessary.27.12 Gear-shift and brake cables› Carry out regular maintenance on all Bowdencables.› Have defective parts replaced at a professionalbike workshop. This may be necessary especially ifthe bike is often left outdoors and is exposed to theeffects of the weather.27.13 Paint finishesPaint finishes require regular care, this also ensures thatyour bike looks good.› Check all painted surfaces regularly for damageand touch up immediately if required.› Consult your specialist cycle shop for advice onhow to care for your bike's surface finishes.27.14 BearingsAll bearings on the bike, such as the headset, wheel hubs,pedals and bottom brackets, are subject to function-relat-ed wear which depends on the intensity and duration ofuse and how well the bike is looked after.› Check these parts regularly.› Clean and lubricate them regularly.27.15 Sliding bearings and bearings forfull-suspension frames, suspensionforks or other suspension elementsThe suspension components on the bike, particularly thesliding bearings, bearings and suspension elements, mustcope with very high stresses compared to the other bear-ings. They are therefore subject to a high degree of wear.› Check these parts regularly and thoroughly.› Observe the enclosed user manual from themanufacturer.› Your specialist cycle shop can advise on how tolook after these sensitive components, and also onhow to replace them if necessary.To find out more important information on maintenance ofwear parts, visit the Internet pages of the relevant compo-nent manufacturer. The link list in ➠ Chapter 29 providesan overview with links.