Tolerance for u-joint

AA Ford Discussion Group relating to the repair and restoration of your AA Ford.
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Rob29
Posts: 9
Joined: July 5th, 2017, 2:37 pm
Body Type: 88-A
Model Year: 1930

Tolerance for u-joint

Post by Rob29 » September 1st, 2017, 9:51 am

I have been trying in vain to find a replacement for my 6-10 spline u-joint for a 29 AA. It seems to have a lot of side to side play but now I'm wondering if that may be normal, or close enough. It slides 3/16". Is that perhaps within operating specs? Thanks, Bob

Stakebed
Posts: 1063
Joined: June 14th, 2007, 7:29 pm
Body Type: Grainbox
Model Year: 1929
Location: Illinois

Re: Tolerance for u-joint

Post by Stakebed » September 1st, 2017, 10:35 am

well ideally there should be no detectable play by hand in the rotational direction - if you notice the spider actually has flat spots to allow grease to get into it.

Wait you mean holding one yoke and SLIDING it you have 3/16? But in the rotational direction its tight? If so that's normal on all the ones I have.

Bob C
Posts: 1072
Joined: April 24th, 2003, 11:50 am
Body Type: Mail truck, Stake tr
Model Year: 1931
Location: SO CAL

Re: Tolerance for u-joint

Post by Bob C » September 1st, 2017, 11:08 am

Sliding side to side is OK.

Bob

Rob29
Posts: 9
Joined: July 5th, 2017, 2:37 pm
Body Type: 88-A
Model Year: 1930

Re: Tolerance for u-joint

Post by Rob29 » September 1st, 2017, 11:18 am

Wow, great. Thank you both. I'm glad I asked. One side is perfect then and the other side is only slightly loose. I just need to find a thrust bearing then and I'll be able to put the back end back together with the new torque tube and rods provided by Stakebed (thanks again Tom)

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