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02 F-350 front axle knock

Discussion in 'Ford Trucks' started by basheroffroad, Dec 7, 2013.

  1. basheroffroad

    basheroffroad Junior Member
    Messages: 23

    Been having problems lately with a knocking sound in the front end of my 2002 F-350 SRW 5.4 I have managed to figure out where its coming from just cant figure out how to fix it.:angry: hoping someone on here can help. The passenger side u-joint yokes are knocking on the lower ball joint nut. Both of the u-joints were replaced when this first started happening but the knocking came back within a week. The garage that did the work won't help since it left their shop with no knocking and didn't start for a week.:realmad: So for the last few months i have been driving around with the u-joint zip tied in place so it wont knock but now that winter is upon us it would be helpful to be able to use 4 wheel without having to carry a pack of industrial zip ties around to tie it back in place. also not sure why but with the truck in 2 wheel and the hubs unlocked the axle shafts still rotate while driving down the road. don't know if this is normal or not but makes no sense. thank you in advance for any help!!
     
  2. Tony350

    Tony350 Senior Member
    Messages: 546

    I think there is a bushing or bearing where the axle shaft comes out of the axle housing. Maybe this is worn causing the axle shaft to not rotate true causing it to hit the balljoint nut.
     
  3. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    And why can't you take it back. Whats the warranty on there work? Taillights past the bumper?
     
  4. basheroffroad

    basheroffroad Junior Member
    Messages: 23

    I have tried to find a part number for an outer axle seal or bearing but can't seem to find it anywhere and the guys at the parts store keep telling me i don't know what I'm talking about.


    and yes dieselss they said they would have looked at it again if it had started the day I got the truck back from them but because it was ok for a week they claim that I must have done something to it after they fixed it.
     
  5. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    There is a seal on the axle tube. And then a big seal on the inner hub on the axle. Those are the 2 that you would need.
     
  6. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,691

    There is no seal or bearing on the outer part of the axle tube. There is a seal on the inner part of the axle tube on either side of the pumpkin. My guess you have worn hub bearings or spindle.

    EDIT worn ball joints can cause this also.
     
  7. basheroffroad

    basheroffroad Junior Member
    Messages: 23

    well I refuse to just start replacing parts until I can find out whether or not there actually is a seal or bearing in the end of the axle tube I have heard different things from so many people about it that I don't know who to believe. I know its not the ball joints and it shouldn't be the hub assembly as this was replaced a few months before this problem started and everything was in good condition when the u-joints were replaced
     
  8. Whiffyspark

    Whiffyspark 2000 Club Member
    from SOMD
    Messages: 2,402

    No there is no bearing. Its a hollow tube with a seal on the pumpkin end.

    The only bearing is the actual hub. It sounds to me like someone didn't tighten the hub nuts right. They usually don't just fall off because there's several pieces. There's a locking pin and 2 nuts.

    Jack the front end up and move tire youll be able to see what is moving.

    Personally I would take it back and demand they fix it. That's bullsht to even try to tell you that. Ford hubs aren't the easiest todo and if you had someone inexperienced its a good possibility
     
  9. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,691

    Here is the diagram. I am assuming you have a dana 60 but the dana 50 is the same design if you have a very early 02. The inner seal is part #31. Now there is a company that makes an outer seal to keep dirt and grime out of the axle tube but this in no way supports the axle. Axle is supported by the main carrier, spindle and hub.

    I was not suggesting throwing parts at it. Real easy to check ball joints and bearings. Jack it up and use a large pry bar under the tire. Should be very little, if any, movement up and down in the ball joints. Then while still lifted try to push top of tire in and out to check bearings.

    00002378.gif
     
  10. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    Seal on the end of the axle tube. And just the hub bearing.
     
  11. Whiffyspark

    Whiffyspark 2000 Club Member
    from SOMD
    Messages: 2,402

    Fords don't have a seal on the outside. Its on the inside of the pumpkin and just keeps the fluid in the pumpkin. It is a pia to change.

    There is a seal on the hub but that is just for vacuum basically. Neither seals support axle
     
  12. basheroffroad

    basheroffroad Junior Member
    Messages: 23

    well I'm glad someone was able to find that diagram I've spent the last few hours searching for a decent diagram that would actually show the whole axle. oh and I have had the hub assembly off since the last time anyone else worked on it so I know it went back on right. I guess I'll just keep the zip tie for now and come spring time I'll start throwing time money at it when I have some to spare. I'm sure it'll need a new hub assembly by that time anyway
     
  13. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    Kimber pm......
     
  14. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    On 99-03 solid front axle, the axle seal is on the axle at the end not near the pumpkin.
    The hub seal is a vacuum seal, and protects the inside of the bearing
     
  15. Whiffyspark

    Whiffyspark 2000 Club Member
    from SOMD
    Messages: 2,402

    Did you check the front end? Its not hard to do. All you need is a pry bar and jack
     
  16. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    That's the wrong diag for a 99-03 solid axle. Fyi
     
  17. kimber750

    kimber750 PlowSite Veteran
    Messages: 3,691

  18. 1olddogtwo

    1olddogtwo PlowSite Fanatic
    Messages: 11,551

    Pics are worth 1000 words here.
     
  19. dieselss

    dieselss PlowSite Fanatic
    Messages: 10,991

    you want pics of my rusty hubs and seals?
     
  20. mrv8outboard

    mrv8outboard Senior Member
    Messages: 197

    If the ball joints were just done and the upper ball joint grease fittings are still in them, that is your problem. The upper joints come with a plug you install after they are greased.