Rear end noise plus "what is that rubber line from…"?!

Discussion in 'General Ranchero Help' started by Johnnycoast, Mar 14, 2017.

  1. Johnnycoast

    Johnnycoast In Second Gear

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    Hi Folks,
    Haven't posted here in a while. But always read what people are up to…
    Rear end, maybe central or drivers side, slowly started making a wog wog wog sound at higher speeds…It is not a consistent sound. nor is it a sharp bang or clack. slow oscillating grind or "wog". Slip it into neutral and it persists. Dosent seem to change when I depress the brakes or decelerate. Tho I know the rear brakes need to have the shoes changed… Also, I noticed that there is gear oil leaking from the 3rd member where the drive shaft connects. and at the top of the pumpkin in the rear there is a rubber hose that has rotted off and become disconnected.
    I got some gear oil and went to put it in assuming that some had leaked out of the diff. but when I opened the filler nut some oil spilled out, it was seemingly full?!?
    Axle bearings? u joints? worse?
    Help!
    1970 ford rancheo
     
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  2. andrewok1

    andrewok1 In Maximum Overdrive GOLD MEMBER SILVER MEMBER

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    sounds like it may be time to pull it apart before its to late if leaking at rear yoke even more reason
     
  3. Johnnycoast

    Johnnycoast In Second Gear

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    Well pull it apart then what?
    Is it the third member? is it axel bearing noise? is it a bearing inside the rear diff? Im supposing that the leak is a seal at the third member. Can I break this down myself and replace it? Who does rebuilds anymore?
    SOL Johnny
     
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  4. andrewok1

    andrewok1 In Maximum Overdrive GOLD MEMBER SILVER MEMBER

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    when I did mine I took the axles to a machine shop to get the bearings changed and third member was sent to a specialist to set the rear up with bearings and seals ,other than pulling it apart and putting togeather needs to be sent out unless you a have a press for axle bearings 4x4 shops do bearing rears speedshops
     
  5. andrewok1

    andrewok1 In Maximum Overdrive GOLD MEMBER SILVER MEMBER

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    heres a artical on 9 in rears this might help you /
    http://www.fordmuscle.com/archives/2002/02/nineinch/
     
  6. Johnnycoast

    Johnnycoast In Second Gear

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    Wow thats a great ton of info. thanks andrewok1. If I wanted to replace that 8" with a 9" rear end, could I just swap it out or will I need to change the drive shaft length? We have a speed shop Ill call tomorrow in brooklyn.
     
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  7. andrewok1

    andrewok1 In Maximum Overdrive GOLD MEMBER SILVER MEMBER

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    If your in the northeast other than snow you can find SPEEDSHOPS & Machine shops,all over,good luck, Andy
     
  8. Jeff B

    Jeff B In Maximum Overdrive BRONZE MEMBER

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    Johnny,
    To help make a full diagnosis, you might try rotating your tires and see if that changes anything. If you can't do it safely, don't do it. If you can and it does make a difference, you might
    look for a tire that has a tread separation or out of round due to age or sitting. It might show nothing, but it could be a hint as to what is up. Good luck.
     
  9. Jeff B

    Jeff B In Maximum Overdrive BRONZE MEMBER

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    Also, the hose that rotted off sounds like a vent hose. My vent hose is at the brake line tee on the axle tube and mine is gone too. If that hose is gone, it might leak oil from there. If the vent is
    clogged, it my cause a leak at a seal.
     
  10. handy_andy_cv64

    handy_andy_cv64 In Maximum Overdrive SILVER MEMBER

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    Yeah, the bolt that holds the splitter block is hollow, and the hose attaches to it. If you wire brush everywhere on the block then remove the bolt to verify nothing's plugging it, and pull the hose down to replace it, that part will be taken care of.
     

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