Weird Vibration

[trbig]

OK... Clips are the simple slide on C clamp that clips on the inside of the yoke. I couldn't find my digital caliper, but my english one with my conversion said:

End cap to end cap installed = 2.308" (58.6232mm)

Cap diameter = 0.787" (19.9898mm)

Yoke width minus the caps = 2.085" (52.959mm)

All four sides are equal.


Tod

[XS1100 Newbie]

Thanks Tod. I'll get to work on it.

[DiverRay]

I remember something about an early Datsun, 1200 or 510, using the same U-joints.....

[Steptoe]

uni joints

STOP,,, DON,T DO IT,

A universal joint out of a toyota forklift will fit straight in,,
will more than likely be in stock on a shelf in a bearing shop..

take your old one in for measurement and might cost you $20 or $ 30

[randy]

Sounds like you've done it. What model forklift? Got a part # for the joint?

[Steptoe]

your right

g,day Randy, yep was a while ago now, can,t remember, I took mine in with me, they measured it and the rest is history.


20 mm caps / 40 mm across, [inside the yoke ] clips on the inside

[XS1100 Newbie]

Good news. Forklift sounds good. I am continuing my search. One from the auto parts store may be less expensive. Was the one from the forklift greasable? I think i may have found one, but i am going down to Napa, and going to measure it myself. It is off an early Datsu, and Toyota.

[Steptoe]

uni joint

hey fella's,, the joint I bought was NOT greasable, [it been a while since I've seen an auto joint that is, most of them now are sealed, " SELF GREASING" ]
I purchased mine from CBC bearings, we also have SKF shops,[ industrial heavy machinery type stockists ] our local auto stores don't stock this type of thing.

hope this helps

[b.walker5]

Possible replacement

Based on Tod's measurements, this looks fairly close.

http://www.driveshaftparts.com/index...&productId=270

Slightly shorter across the caps but the cap size is right.

[b.walker5]

neapco.com also have a listing thats pretty damm close to Tod's dimensions. Part number is 1-1011 and lists as being fitted to all Toyota 1200's from 68 to 79. Toyota part number is 04371-10010. Size is .788" x 2.260"

Koyo part number is T2957.

[Steptoe]

Very very wrong

# 1 THERE ARE NO CLIP SLOTS
# 2 THAT UNIVERSAL IS FOR BOLT ON YOKE CAPS

go back to my post with 20 40 measurements, you won't go wrong

[b.walker5]

Ok, where do you get the 40mm from. Tod's measurements would tend to suggest around 58mm cap to cap and 53mm without caps, which is pretty much spot on with the details given on the supplier websites. I'm not doubting you about the clips as i've never had one out and dont know with any certainty but I have dealt with plenty of Holden U joints over the years and the clips on them are at the ends of the caps, so I assumed these would be similair.

and you must be looking at the wrong joint on the sites as the ones I identified are not for bolt on yokes, theyre designed to be held in place by clips at the ends. Check the Neapco site, it shows the joint and clips in the application pictures.

[trbig]

There aren't any slots in the yoke to have the clips at the end. The caps are held by slots in the caps themselves and a c-clip holding them on the inside of the yoke.

I didn't understand the 40mm length either that steptoe showed... BUT... is the width really that critical? If it was longer from cap to cap and the caps stuck out a bit from the yoke, but you could still clip the inside.. why would that matter? There's room in the driveshaft housing so space isn't critical. And in that aspect, if it was shorter cap to cap and the caps were actually tucked down into the yoke.. as long as you could get that clip on them, would it matter?

The only thing critical I see... would be to where the caps were all the way down (Or really close to being that way) on the U-joint body when the clips were installed. If the shaft of the U-joint doesn't go into the end of the cap and hits the roller bearings somewhere in the middle, it's too much leverage against the roller bearings and it will cause premature wearing of the ends of the U-joint body and your needle bearings.

That being said... I'm not sure how you could go clear down to a 40mm width? Not saying it can't, but that's a pretty big difference.


Tod

[79XS11F]

As long lived as those U joints are, I neven could figure out why they were a sealed unit. I will guess that Yamaha figured that they would be too much trouble to get access to for regular greasing.
Rob

[trbig]

If the shaft of the U-joint doesn't go into the end of the cap and hits the roller bearings somewhere in the middle, it's too much leverage against the roller bearings and it will cause premature wearing of the ends of the U-joint body and your needle bearings.

And the shaft would wobble side to side in the caps and would cause the driveline to be off center and wobble/vibrate.

Tod