How To Service A Bike Crank
Crank systems have become more complex in recent years.
How to service a bike crank. How to replace a crankset bike cranks are the important components that connect your pedals to the chain and bottom bracket converting your pedalling into the power that drives the rear wheel. If your crank has bolts on both sides of the bike go to the other side of the bike and remove the other crank bolt. Cranks may be removed to replace cranks or chainrings service the bottom bracket bearings or to clean the chainrings. If you have any questions please let me know.
Tips for repairing a bike. I hope this video is helpful for you. Crank adjustment chain line sunday aaron ross ex pro bmx bike repair finale bikemanforu duration. The reasons for wanting to change your crankset could be to fit longer or shorter cranks or maybe even add lighter cranks that are made from aluminium.
To know the service options you will need to know the type of crank and type of bottom bracket bearing system installed in the bicycle. Old school bikes cruisers or cheaper bikes employ a one piece crank with serviceable caged bearings inside the bottom bracket. The majority of entry level road and mountain bikes employ a two piece crank. I show you how to remove and install new bearings as well as how to clean all the parts.
This is how to overhaul the bottom bracket on an older style of bike before they started using sealed bearings. Learn how to remove the crank on a bike with expert tips on bicycle repair in this free video clip. This type of crank uses a sealed cartridge and is changed as a unit. Look in the bike s user manual or on the bike manufacturer s website to find out which size will fit your bike.
Most cranks require a 4mm 8mm allen key. Cranks may be removed to replace cranks or chainrings service the bottom bracket bearings or to clean the chainrings. If you feel a scraping hear a grinding. If your cranks are wobbly or there s a noise coming from between your cranks when you pedal then you may need to overhaul your bottom bracket this instructable a remix of friendofhumanity s.
The bottom bracket is what allows your cranks to turn.
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