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Thread: Drive shafts and u-joints

  1. #61
    Van Addict boogieman's Avatar
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    Re: Drive shafts and u-joints

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    happy to report, on the bumpstops which definitely looks like the shortest distance the driveshaft will see, there is still some play, couple hundred thousands, on a fully compressed previa alltrac rear driveshaft...if using one i would definitely remove the zerk and compress fully before installing, but i see no really issue with this....tc output flange seal replaced....now on to fj80 spring swap...

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    Re: Drive shafts and u-joints

    Hey there--
    I have had an 85 van for a few years now, I have done a few things to her, but never anything with the steering or underbelly. She feels a bit wobbly sometimes on the highway and I am wondering when you know you need to start replacing things? What are the signs or sounds? I am slightly paranoid because I have had a couple of scary moments with her (the country homes pop-top ripping off on a two lane highway far far from home, and the front drive shaft falling out on the highway closer to home).
    Any guidance would be much appreciated

  3. #63
    Van Addict boogieman's Avatar
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    Re: Drive shafts and u-joints

    front driveshaft falling out?!?@? yikes, that sounds extremely dangerous...cars have been known to pole vault when that happens..i suggest taking it to a shop..once up on a lift things can be inspected and advice given...hopefully theres some place close to where you live..

  4. #64
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    Re: Drive shafts and u-joints

    Quote Originally Posted by Lois85 View Post
    Hey there--
    I have had an 85 van for a few years now, I have done a few things to her, but never anything with the steering or underbelly. She feels a bit wobbly sometimes on the highway and I am wondering when you know you need to start replacing things? What are the signs or sounds? I am slightly paranoid because I have had a couple of scary moments with her (the country homes pop-top ripping off on a two lane highway far far from home, and the front drive shaft falling out on the highway closer to home).
    Any guidance would be much appreciated
    Quote Originally Posted by boogieman View Post
    front driveshaft falling out?!?@? yikes, that sounds extremely dangerous...cars have been known to pole vault when that happens..i suggest taking it to a shop..once up on a lift things can be inspected and advice given...hopefully theres some place close to where you live..

    I think I agree. Unless you are conversant with inspecting suspension and Steering, a competent (and Honest) shop can provide invaluable advice.

    These rigs ARE on a recall for the front steering gearbox. You can google it and get informed from Toyota if yours has been corrected. If not, you can schedule a visit to the local Toyota dealership and they will inspect the box, re-lube it and replace the suspect seal - I did this on mine just because. Mine did not need the box replaced.

    The benefit is they invariably do a safety inspection (Do NOT pay for this, or authorize any extra work - If they "volunteer" it and try to charge - contest it - on another recall, on another car, the dealership removed the unauthorized charges...) That safety inspection will tell you - for free - what is in need of fixing, and you DON'T have to use them to fix it.

  5. #65
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    Re: Drive shafts and u-joints

    85 van are 2WD only, as such they do not have a "front driveshaft", perhaps the front joint failed on the rear shaft??
    The only way I could imagine a pop top coming off at speed is if it wasn't locked down, or the locks were broken.
    No matter
    Generally things should be quiet, anything that goes bump, clunk, grind, whirr or crack, needs to be inspected ASAP
    Any vehicle should be inspected when first purchased and at least once a year after that.
    If you are unable to do so yourself you need a qualified garage that you trust.

    All garages need to earn money to survive and an honest shop deserves to thrive.
    Working for free doesn't keep anyone in business and a free inspection is worth exactly what you pay for it.
    The whole purpose of a free inspection is to generate paid work for the shop and there is a slight conflict of interest there.
    Paying for a proper inspection should get you a less biased report and a proper list of needs, in order of necessity,
    rather than a cherry picked list of easy profit generators.

    The only other option is to learn how to do it yourself, the best part of that is you will never have another unexpected failure.
    Because you will have looked at that recently, or heard it or last time you were in there, you noted something and ordered the parts in anticipation of today.....

    85 van should have a steering box, complete with drag link and idler arm.
    86> vans have a bevel gear and steering rack
    There was a recall on the bevel gear only, does not apply to the box and is vin specific.

  6. #66
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    Re: Drive shafts and u-joints

    Spicer 5-3202x u joints also work as a staked in replacement for the 4wd manuals. They are an alternate part option to the rockford 430-10s or Neapco 1-0430s https://www.actionmachineinc.com/pro...28961593294900. I just finished installing a pair of them on my 87 4wd manual on the rear driveshaft and they fit. I completed a short trip of about 150 highway miles and i didnt notice any vibrations. So Spicers can also be used as an option instead of replacing the whole shaft or instead of rockfords. they are also only 25 bucks a piece on summit.

  7. #67
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    Re: Drive shafts and u-joints

    Headhunter, How did you get past the staking?

  8. #68
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    Re: Drive shafts and u-joints

    with a harbor freight press https://www.harborfreight.com/12-ton...ess-33497.html just pressed on the caps until the stakes snapped. worked quite well and went better than i thought it. if you do it like that i would make sure to put a spacer in between the ears to support them while pressing. while i didnt, i would use a spacer if i had to do it again, it could bend your ears if you dont. i would also grind away as much of the stakes witha dremel too if i were to redo/do another driveshaft.

  9. #69
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    Re: Drive shafts and u-joints

    Can anyone tell me the output shaft angle of the motor?

    I have installed an electric motor in place of the ICE and have the new electric motor and trans are sitting a little higher than OEM making my output shaft and driveline parallel. A mismeasurement on my part when fabricating my electric motor mount.

    After some testing I was getting some binding while decelerate and off throttle. The rear axle could be diving down too. I need to match the angle of the outshaft and pinion in the rear diff and make them parallel. Could someone help me? I have a carb referee appointment soon and need it running properly for the inspection.

    Thanks,

    Christopher

  10. #70
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    Re: Drive shafts and u-joints

    If you are getting binding I suspect you are bottoming out the sliding spline, or its getting too "tippy fingers".

    Those angles are not that critical, and not being parallel; well any load will eliminate that in a hurry. (rear squat...) So will a rear only lift.

    Another possibility is too much angle on the U-joint itself? Is this a 4WD with a lift?

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