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  •  » Rear Axle and bearings questions :-)

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    6/12/2020 2:23 AM  #1

    Mach173
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    From: Sweden
    Registered: 8/08/2018
    Posts: 186

    Rear Axle and bearings questions :-)

    Hi
    Ive changed out the drum brakes for discbrakes(3 weeks ago) and noticed that the axle has the ventilation plugged ? should it not have a breather cap or filter on it ? The hose coming from the axle is plugged just at the fitting. Can I put a piece of hose with a filter on top ?

    The bearings are one piece, small version. How do they get lubricated ? Does the oil in the shaft reach and lubricates the bearings ? When I pulled out the shafts there was oil/fluid  on them but not that much .There were  no grease on the bearings . Should I squeeze in grease ? It just struck me yesterday :-) 
     

     

    6/12/2020 4:45 AM  #2

    Bolted to Floor
    Senior 24-7 FYI Addict

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    From: Houston, Texas
    Registered: 4/01/2013
    Posts: 2,017

    Re: Rear Axle and bearings questions :-)

    The axle should have the vent. Mine has a hose routed up to the body and get stuffed inside a small hole in the cross brace for the upper shock mounts. It’s a void area so no need for a filter. If you want to add a filter, I don’t see how it could hurt.

    The axle shaft bearings should be sealed so they don’t need the oil from the rear end. There should be a seal just inside the tube that prevents most of the gear oil from making it over to the bearing also.

    Last edited by Bolted to Floor (6/12/2020 4:47 AM)

    John  -- 67 Mustang Coupe 390 5 speed
     

    6/12/2020 5:44 AM  #3

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,510

    Re: Rear Axle and bearings questions :-)

    If you look in the area Bolted noted you may find an unused hole, or even the remains of a plastic clip used to secure the breather hose.  The breather is just a one way valve commonly available.  Fox cars just had the breather right on the axle tube with no hose. 

     

    6/12/2020 5:52 AM  #4

    Mach173
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    From: Sweden
    Registered: 8/08/2018
    Posts: 186

    Re: Rear Axle and bearings questions :-)

    Great thanks :-)

       •Thread Starter
     

    6/12/2020 10:30 AM  #5

    Bolted to Floor
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    From: Houston, Texas
    Registered: 4/01/2013
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    Re: Rear Axle and bearings questions :-)

    Had another thought about the bearings...... from your description, I made the presumption of an 8" or 9".Is that correct? If the bearing is pressed on the axle shaft, then all should be good with my comments.  

    John  -- 67 Mustang Coupe 390 5 speed
     

    6/12/2020 12:30 PM  #6

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,510

    Re: Rear Axle and bearings questions :-)

    True, the 8.8 uses an open bearing design with a an axle seal.  Th bearings are lubed by the fluid in the rear unlike the 8"/9" design. 

     

    6/13/2020 8:27 AM  #7

    Mach173
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    From: Sweden
    Registered: 8/08/2018
    Posts: 186

    Re: Rear Axle and bearings questions :-)

    Yes ford 9 inch with 28 splines. The bearing are pressed on, Il change them next week. The hose was cut of and there was a lot of debris in the ventilation tube. I cleaned Everything and put on a bit of hose so Everything is fine :-)

       •Thread Starter
     

     

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