Questions tagged [repair]
Repairing your bike when something is broken. REPAIR is not the same as MAINTENANCE, a separate tag. Repair is what one does only when something is broken. Maintenance is what one does on a regular basis.
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Replacing worn pads worsens need for bleeding
I am faced with the most peculiar situation.
An old XT brake(BR-M785) in some need of bleeding. I remove the worn out pads, observe no significant gunk accumulation, push the ceramic pistons back ...
- 13.9k
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Gear up lever will not move
I just got a new bike and unfortunately fell off it on the first ride, now the lever to change gear for my derailleur Mezzu Microshift is stuck in the position it would be if you had upped a gear ...
- 121
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Mechanical Disk Brake Pads Too Thick
I decided to replace my front brake pads since they are worn out beyond function. So after removing the old pads, I made sure the piston was fully out, and the adjusting screw was fully tight as well, ...
- 21
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Two ill-repair bikes into one?
I have started a new job, cycling roughly 17 miles (or 27 km) each day into work. Previously, it was a very short ride (less than 2 km) into university.
I have two bikes that are currently falling ...
- 83
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Rear tire gets flat every month for unknown reasons
My rear tire gets flat almost every month without any obvious reasons. Few times it lost the pressure while riding but I do not see or remember puncturing it, and once it was on a good tarmac street ...
- 7,899
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Shimano Ultegra shifters 8020 bottom plastic cover screw. Where to get it?
Does anyone know the specs of the screw of part #7? Or where to get it in US?
It unscrewed and got lost. I think I might find something similar not bike-specific.
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Brake pads keep getting contaminated - how to diagnose?
(see updates at the bottom)
My bike uses Shimano hydraulic disc brakes. I can't find any markings on the calipers or handles, but the manufacturer's website says they're BR-M315.
Over the past few ...
- 563
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My old BB has a little play. Is it normal? Can I still run it? for how long?
My threads from the crankset were gone, had to cut all crankarm with iron cutter in order to be able to extract the crank arm. But before that, I gave some hammer strikes to it trying to get it out.
...
- 33
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Do split frames for belt drive bikes need special screws?
I have a belt drive Cube bike, and the frame is Aluminium.
The rear triangle has a split to accommodate the belt, there's a screw right above the rear sprocket, on the right side of the bike - see ...
- 563
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Brake and chain problems after a muddy ride (ed. note: suspected chainsuck)
Recently I went for a ride, and it was a very muddy one. I blatantly misjudged the depth of a puddle and submerged half of my bike (and myself) in muddy water, including the chain and front/rear disk ...
- 123
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How do I rebuild Shimano XTR hydraulic brake levers?
My right brake lever (Shimano BL-M9020 to be specific) has attracted some dirt around the blade pivot area, and some parts look shiny. I suspect the master piston seals are starting to leak. Replacing ...
- 16.4k
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SRAM GXP crank partially stuck in bottom bracket
I (unfortunately) have a SRAM Apex GXP crankset that I need to replace after less than a year of use because it's garbage. But I can't get the crankset out of the bottom bracket. I've taken the bolt ...
- 141
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What's the point of tyre boots?
The title is a little provocative, but how often are they actually useful?
Only once in 4 tyre failures would a boot have helped, when I nicked the sidewall on a cattle grid with a rough weld, making ...
- 60.8k
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Rear wheel thru axle with no lever
I have a Cube Attain Road, but the rear thru axle puzzles me! I want to remove the rear wheel in order to attach the bike to a Wahoo Kickr 5. How do I get the axle out? When I unscrew the bolt I ...
- 121
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Removing Nexus 8-speed IGH from hub shell
see update at the bottom
I'm trying to remove my Nexus SG-C6001-8D from its hub shell to grease it. Sadly Shimano's documentation doesn't cover the process of extracting the internals from the hub ...
- 563