1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

80-Series RR Axle Disassembly?

Discussion in '80-Series Tech' started by trailcarnage, Jan 25, 2004.

  1. trailcarnage

    trailcarnage

    Messages:
    251
    Likes Received:
    0
    Joined:
    Jan 25, 2004
    Location:
    Da UP, eh...
    I picked up a 80 axle yesterday and am in the process of disassembly. I pulled the axle shafts out, no problem. I then removed the 4 nuts holding the studs that pass through the axle housing flange. At this point, I figured that a heavy mallet would pop the spindle/brake assembley free. I have thumped the heck out of it with no success. Is the spindle part of the axle housing or can it be removed with the brakes? Do I have to break down the wheel bearing assembley to get it apart? Or am I just not hitting it hard enough? Any info would be greatly appreciated...

    ~Tom
     
  2. bjowett

    bjowett Supporting Vendor

    Messages:
    3,404
    Likes Received:
    977
    Joined:
    Oct 28, 2002
    Location:
    Western Massachusetts
    The spindle is part of the housing, the 4 studs/nuts hold the caliper bracket to the housing. Inside the hub - remove the phillips screws from the outer ring (a trick locking set-up, eh?), this will allow you to unscrew it and remove the hub/bearings. Enjoy.
     
  3. trailcarnage

    trailcarnage

    Messages:
    251
    Likes Received:
    0
    Joined:
    Jan 25, 2004
    Location:
    Da UP, eh...
    [quote author=bjowett link=board=2;threadid=10620;start=msg95318#msg95318 date=1075069530]
    The spindle is part of the housing, the 4 studs/nuts hold the caliper bracket to the housing. Inside the hub - remove the phillips screws from the outer ring (a trick locking set-up, eh?), this will allow you to unscrew it and remove the hub/bearings. Enjoy.
    [/quote]

    Dang! I was afraid that you would say that. :p
     
  4. RavenTai

    RavenTai

    Messages:
    6,048
    Likes Received:
    29
    Joined:
    Nov 16, 2003
    Location:
    Dixie co. Florida
    sounds similar to my full float chevy if you can wait I'll come help out (would like to see it come apart anyway)

    love the avatar :beer:
     
  5. trailcarnage

    trailcarnage

    Messages:
    251
    Likes Received:
    0
    Joined:
    Jan 25, 2004
    Location:
    Da UP, eh...
    [quote author=bjowett link=board=2;threadid=10620;start=msg95318#msg95318 date=1075069530]
    The spindle is part of the housing, the 4 studs/nuts hold the caliper bracket to the housing. Inside the hub - remove the phillips screws from the outer ring (a trick locking set-up, eh?), this will allow you to unscrew it and remove the hub/bearings. Enjoy.
    [/quote]

    OK

    I got the axle disassembled and the brackets stripped. Now I am trying to rebuild the outers. What is the trick to getting the rotor/drumm off of the assembly. I have doused it with PB and it still won't move. I figured that the shoes were frozen but I beginning to think that there is a holding mechanism. Any insight?
     
  6. bjowett

    bjowett Supporting Vendor

    Messages:
    3,404
    Likes Received:
    977
    Joined:
    Oct 28, 2002
    Location:
    Western Massachusetts
    I've always had them pop off rather easily. Does it turn? Make sure the ebrake is properly released.
     
  7. trailcarnage

    trailcarnage

    Messages:
    251
    Likes Received:
    0
    Joined:
    Jan 25, 2004
    Location:
    Da UP, eh...
    [quote author=bjowett link=board=2;threadid=10620;start=msg95781#msg95781 date=1075175068]
    I've always had them pop off rather easily. Does it turn? Make sure the ebrake is properly released.
    [/quote]

    It appears that the e-brake shoes are frozen to the drum. We have gone as far as to drill out the pivot pin for the shoes. We can't even get it to break free of the backing plate. I am ready to take the plasme cutter to them but RAVENTAI says I should find a less destructive route.
     
  8. IdahoDoug

    IdahoDoug

    Messages:
    8,848
    Likes Received:
    244
    Joined:
    Aug 9, 2003
    Carnage,

    Are you saying that the drums cannot even rotate, indicating that the shoes are indeed frozen to the drum, or are you saying they are because you cannot get the drum assembly off? Don't be insulted by this, but "appears" is one thing, but clearly if you cannot rotate the drum then they are frozen. So which is it - actually frozen or you're simply having trouble getting the drum off which often happens with drum brakes. The advice you may get hinges upon this knowledge.

    DougM
     
  9. trailcarnage

    trailcarnage

    Messages:
    251
    Likes Received:
    0
    Joined:
    Jan 25, 2004
    Location:
    Da UP, eh...
    Doug,

    The drums won't turn. The axle has been sitting for years. I think the rust has seized them.
     
  10. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,641
    Likes Received:
    5,035
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    May I ask a silly question?


    Is this a disc brake rear axle?
     
  11. bjowett

    bjowett Supporting Vendor

    Messages:
    3,404
    Likes Received:
    977
    Joined:
    Oct 28, 2002
    Location:
    Western Massachusetts
    Hey Dan, read the first line carefully, as I was also contemplating the same thing........

    "I picked up a 80 axle yesterday and am in the process of disassembly. I pulled the axle shafts out, no problem"

    You can't pull the shafts on a semi floater w/o first removing the drums.
    Since the shafts are out, and the drums are on, mustabeafullfloater. yes/no ???
     
  12. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,641
    Likes Received:
    5,035
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    It is a full floating axle. It may not be an 80 series FF axle. The 80 series FF axle is a disc brake axle. FJ45,60,62 models had FF axles available. They were drum brake axles.
     
  13. RavenTai

    RavenTai

    Messages:
    6,048
    Likes Received:
    29
    Joined:
    Nov 16, 2003
    Location:
    Dixie co. Florida
    yes it is a full floater w/disk service brakes and drum parking brake. the shoes appear to be seized to the rotor/drum. we released the tension on the E-brake bell crank stop, is there another adjuster inside? there is no removable plug on the backing plate like you would see on a domestic with drum brakes to adjust the "star wheel" there is a small round rubber plug on the front of the drum but there is nothing under it and we cannot rotate the rotor/drum to another position, it is an axle that has been sitting loose outside in a junkyard for quite a wile,
     
  14. cruiserdan

    cruiserdan SupportingVendor Emeritus Moderator

    Messages:
    21,641
    Likes Received:
    5,035
    Joined:
    Mar 27, 2003
    Location:
    Surrounded by Cruisers from all over the world
    Thank you for the clarification.

    The hole in the rotor face is used to back off the shoes. Since you can't rotate the rotor to get the hole to the bottom to access the adjuster you do have a problem. Have you tried attaching a long bar to the pinion flange to try and rotate the axles in that manner? You will of course need to put the shafts back in. You may get enough of a mechanical advantage to break the rotors loose from the e-brake shoes using that method. In addition, there are two 8mm holes in the face of the rotor that are used to run bolts into the rotor to push it off of the hub. They are located opposite each other in between the lug studs.
     
  15. RavenTai

    RavenTai

    Messages:
    6,048
    Likes Received:
    29
    Joined:
    Nov 16, 2003
    Location:
    Dixie co. Florida
    Thank you C-dan, the internal adjuster sounds like our culprit, reassembling would be a pain at this point the 3rd member is removed and the brake-backing-plate/hub/rotor-drum assy is already off the axle but reassembly may be the only way we can break it free
     
  16. RavenTai

    RavenTai

    Messages:
    6,048
    Likes Received:
    29
    Joined:
    Nov 16, 2003
    Location:
    Dixie co. Florida
    BTW we noticed that the bolt/stud pattern for the axle flange is the same as toyota manual front hubs and that the spline is also the same, is there an oem axle shaft that is splined on both ends that could be used so that you could have manual rear hubs? or would you have to have custom shafts made?
     
  17. theferg

    theferg

    Messages:
    2,322
    Media:
    2
    Likes Received:
    139
    Joined:
    Dec 22, 2002
    Location:
    Southern Utah
    [quote author=raventai link=board=2;threadid=10620;start=msg96022#msg96022 date=1075230340]
    BTW we noticed that the bolt/stud pattern for the axle flange is the same as toyota manual front hubs and that the spline is also the same, is there an oem axle shaft that is splined on both ends that could be used so that you could have manual rear hubs? or would you have to have custom shafts made?
    [/quote]

    Nope, no EOM spilned-on-both-ends shafts. You would have to go custom. There is quite a bit of talk on this subject on another BB. People are talkin' of gettin' custom shafts made and then runnin' the flanges from the fronts of the 80's. Though not for 80 series rears specifically, the same could work. The only real advantage of custom shafts would be if you are wantin' some custom stronger material shafts made...

    -Ferg-
     
  18. thelal

    thelal

    Messages:
    612
    Media:
    9
    Likes Received:
    42
    Joined:
    Apr 15, 2003
    Location:
    Ireland; USA (WA,CO, CA, CT), Scotland, London
    If u can't turn the drum so u line up the hole (often has a rubber stopper in it) so u can poke a screwdriver in to move the 'star' and loosen the brake shoes (not sure how successful if fully rusted) what u can do is:
    drill a new hole where the 'star wheel' is and poke your screwdriver thru that (will have to measure existing hole to get right diameter setting).
    Could also try and soak whole end of housing (yah I know its heavy and not easy to do) into a large bucket (or hole in the ground) filled with some 'cleaner'/deruster for a day or two and see if that helps.

    (I'd get my sledgehammer to it after that :)