Vehicle & Technical > Defender

front UJ

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davidlandy:
Changed yet another UJ on the front prop today

thats the third one in 9 months! all on the diff end of the front prop.

I have been fitting the pukka GKN boxed item but still cant work out why they keep on failing.

any ideas?

turtle:
I have the same issuess on standard props.

Have you lifted yours Dave? is so this would be the cause.

davidlandy:
it is lifted by 2"

but this problem has been occurring since before then

getting bored with changed UJs now, can do em in my sleep!

Budgie:
I had a propshaft where the U/J kept going and it turned out to be a slightly oversized I/D on the propshaft flange, where you push the U/J into. This wasn't holding the U/J bearing securely and causing it to move a ware quicker. I only noticed it on the second U/J I fitted cos it didn't take so much effort to push the bearing home.

The only other thing I can think of is an out of balance propshaft but you would feel that through the steering.  :?

DIL:
I work on farm machinary which is often run by a PTO shaft with UJ's and it is common practice that you always set the Ujs in-line with each other, (when you slide the two parts of the shaft together you make sure both inner yokes are in line) this makes them run smoother at angles.

When i bought my Defender it had a knackered front prop, so i bought a new one which came with the UJ's at 45* to each other the same as the origional one. I set the UJ's in line and have had no problems since.

Dont know if this is any help but might be worth a look as your prop will be running at more of an angle due to the lift.

Cheers,

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