Jump to content


Photo
- - - - -

Why So Much Axle Nut Torque


  • Please log in to reply
1 reply to this topic

#1 Pairaminis

Pairaminis

    Mini Mad

  • Members
  • PipPipPipPip
  • 194 posts
  • Location: Hartsville, South Carolina, USA

Posted 30 August 2017 - 01:22 AM

I have axle nuts with one split pin hole each on my 1984 Mini salon and was wondering why I have to use nearly 200 ftlb of torque on their nuts as opposed to the 150 ftlb or so of torque used on the two split pin hole axles?  What happens if you just use 150 ftlb as was used on the single hole axles?

Jack

 



#2 Spider

Spider

    Moved Into The Garage

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 14,889 posts
  • Location: NSW
  • Local Club: South Australian Moke Club

Posted 30 August 2017 - 01:48 AM

The 'torque' on the nut was 'increased' in an attempt to better clamp the wheel bearing assembly together tighter, to stop the bearing parts, as well as the drive flange, from 'rocking' on the shaft of the CV, to increase bearing life.

 

In most other FWD cars, the inner race of the bearing isn't small narrow things like the loose parts that are in a Mini hub, they are all mounted on (basically) a long one piece tube, so they don't rock like the Mini ones do. When cornering, the wheel bearing and drive flange kinda do like Motor Bikes,lean over, only ours lean out of the corner,,,

 

It's really not a brilliant design,,,,,,,

 

In short, the tighter, the better, but the earlier CVs were only 'rated' to take 150 ft/lb and a bit to find the next slot. Since going over to the latest CVs, I've been getting better wheel bearing life.






1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users