Front axle swivel unis

[Rick Fischer]

Hi guys

Got to disassemble the front swivels down to the Unis. Would look like the axle needs to be pressed from the axle side BIG press and and tooling a la rear axle bearings ??? .........or swivel housing down around axle. ?????

Cheers

RF

[JDNSW]

Hi guys

Got to disassemble the front swivels down to the Unis. Would look like the axle needs to be pressed from the axle side BIG press and and tooling a la rear axle bearings ??? .........or swivel housing down around axle. ?????

Cheers

RF

Same as rear axle, pretty much.

John

[Lotz-A-Landies]

As John says the same as the rears.

Its really hard to get a straight push even with a tall press, so if you have replacement collars, you can crack the old collar using a cold chisel with the axle across an anvil. Then it will press/push off very easily.

BTW: we usually call those "tracta joints" rather than "unis" but I'm being a little pedantic. The tracta joints are supposedly a constant velocity joint as opposed to the cross type uni joints which are not, although on full lock the tractas don't feel constant to me.

[toad]

Rick, I have a book with plans for the tools you need for this. I will scan them in a send to you when I get home next weekend. Currently with Peter M on a club run down the Darling river.

Rick.

[JDNSW]

......
BTW: we usually call those "tracta joints" rather than "unis" but I'm being a little pedantic. The tracta joints are supposedly a constant velocity joint as opposed to the cross type uni joints which are not, although on full lock the tractas don't feel constant to me.

They are, I believe, really CV, topologically the same as a double Cardan joint, but I suspect that what you are feeling is possibly the fact that they are not frictionless bearing surface (would a synthetic gear oil reduce friction?), but probably, what you are feeling is the front wheels slipping simply because they are, due to the difference in travel on full lock, going at quite a different speed to the rear wheels. I know the free wheel is supposed to allow the rear to override this, but I suggest the effect may be exacerbated or even entirely caused by the free wheel releasing and then gripping and releasing again as the difference is taken up.

And strictly speaking, they are all universal joints or "unis", whether you are talking about cross and bearing joints, Weiss joints, Tracta joints, Rzeppa joints, or "double Cardan" joints etc! But certainly, it saves confusion if you restrict the use of the term "unis" to the common cross and bearing type, and be more specific when anything else is being talked about.

John

[Summiitt]

G'day rick, when I put new swivels on my 80 last year I took the old units into my local engineering shop and they pressed the old swivels off and installed the new ones while I waited.. You just need a shop with the right gear and guys who know what they are doing.. Btw this machining and fabrication shop was very impressed with the tracts joints and the quality of the engineering considering how old they were.

[Rick Fischer]

Thank you all. Had to get the rears done too, so all dropped off at "LR Specialist" Mmmmmm! Said had special tools - still waiting! Mmmmmm..........Never mind they kept on quoting their full man-hour rate........Looks like there have been a lot of other LRs go through the shop before my "full man-hour rate" axles. Will need to be discussed when I pick up, when they are done.

Cheers

RF

[Lotz-A-Landies]

They are, I believe, really CV, topologically the same as a double Cardan joint, but I suspect that what you are feeling is possibly the fact that they are not frictionless bearing surface (would a synthetic gear oil reduce friction?), but probably, what you are feeling is the front wheels slipping simply because they are, due to the difference in travel on full lock, going at quite a different speed to the rear wheels. ...
... John

Hi John

I just remember as a kid learning to drive in an 80" by going over to a local swamp and doing circles on full lock and feeling the kick on the steering wheel as the road wheels were rotating. Nowhere as significant as on later cross type joints. (Although it was nearly 50 years ago now, so memory maybe a bit blurred! )