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Discussion Starter · #1 ·
Hi all,

This is a newbie question... what is the name(s) of the tools that you would need to remove the XT Hollowtech crankset and bottom bracket? If you have a link to online instructions, that would be awesome! Thanks in advance!
 

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You'll need a 10mm allen wrench (8mm for the older 751 XT) and a Park BBT-2 cartridge bottom bracket adapter (plus an appropriate wrench to turn it with). For reassembly I'd recommend a torque wrench to achieve the proper 50 ft-lbs of BB torque and 35 ft-lbs of crank bolt torque.
 

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Discussion Starter · #3 ·
Speedüb Nate said:
You'll need a 10mm allen wrench (8mm for the older 751 XT) and a Park BBT-2 cartridge bottom bracket adapter (plus an appropriate wrench to turn it with). For reassembly I'd recommend a torque wrench to achieve the proper 50 ft-lbs of BB torque and 35 ft-lbs of crank bolt torque.
Hmmm... thanks for the info but this doesn't sound right. I have the BBT-2 bottom bracket adapter and it doesn't work for the Hollowtech bottom brackets (since the XT integrated cranks with the bottom bracket has a hollow cylinder through it.
 

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Calvin Jones-Park Tool said:
So Calvin, is there no way to accurately apply a torque wrench to the BB cup installation?

In your professional opinion, how critical is torque on these new cranksets and cups as compared to cartridge style setups?
 

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Tension vs torque

Torque is very critical to all threaded fasteners, in that it is needed to achieve tension. It would be great to measure torque. Most of the "creaky drive train" posts here are from loose fasteners. The new external threaded crankset bb's are no different in this regard. This is a good example of when working with torque wrenches will teach, kinetically, the various perceived torque applications.
 

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Calvin Jones-Park Tool said:
Torque is very critical to all threaded fasteners, in that it is needed to achieve tension. It would be great to measure torque. Most of the "creaky drive train" posts here are from loose fasteners. The new external threaded crankset bb's are no different in this regard. This is a good example of when working with torque wrenches will teach, kinetically, the various perceived torque applications.
Will Park be offering a crow's foot style adapter for these cups and cranks so as to accurately apply torque?
 
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