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

How to remove rear driveshaft

Discussion in '80-Series Tech' started by NovaFZJ80, Mar 8, 2004.

  1. NovaFZJ80

    NovaFZJ80

    Messages:
    273
    Likes Received:
    0
    Joined:
    Dec 14, 2003
    Location:
    Potomac Falls, VA
    Can i remove just the rear drivershaft by unbolting the bolts and let it drop or the entire driveshaft from the end of transfer case to the rear where it bolts up to the rear differential... gear oil leaking from the metal looking seal that goes over the rear diff.

    Will be marking it so as to preserve original relationship as it may have been balanced in-car at assembly. Removal of pinion flange that the drive shaft bolts to, marking it in relation to pinion so as to preserve its position since it may have more throw.

    How many :banana: would this job be...
     
  2. Photoman

    Photoman SILVER Star

    Messages:
    1,151
    Media:
    41
    Albums:
    3
    Likes Received:
    66
    Joined:
    Mar 28, 2003
    If you are just doing the pinion seal you can just drop the rear part of the driveshaft. There is a 30MM or 1 3/16 nut holding the flange on. It may be a little hard to get off since you will be trying to turn the rear wheels with it as you try to get it off. No big deal. Then just tap the back of the flange toward the driveshaft to get it to come out of the pinion seal. It is just on the splined pinion shaft. Remove old seal - install new seal - put a very light amount of grease on seal - insert flange - torque etc. If your flange has a groove worn in it, you can try to put the new seal in a little farther, a little less far, or buy a new one. Don't worry about the position of the driveshaft etc. - you are not doing u-joints. One :banana: job. Oh, drain some or all of the diff fluid so it doesn't keep running out.

    Bill
     
  3. nakman

    nakman addict. Supporting Vendor

    Messages:
    2,221
    Likes Received:
    285
    Joined:
    Jul 30, 2003
    Location:
    Broomfield, Colorado
    Yes, I believe you can just as you described. Once the bolts are out you just need to compress the driveshaft a little and it will fall down on top of you. So you're going to replace the pinion seal? Pretty easy job, just remember to tighten the heck out of the new stake nut after you get your new seal in..
     
  4. Darwood

    Darwood

    Messages:
    1,957
    Likes Received:
    4
    Joined:
    Oct 8, 2003
    Location:
    Z.O.W.I.E. Headquarters
    So the seal can be replaced without removing the 3rd member? That would make getting the flange nut off easier. If I recall properly (from the manual), it's held on by hella torque.
     
  5. montocr

    montocr

    Messages:
    294
    Likes Received:
    1
    Joined:
    Oct 22, 2003
    Location:
    north of seattle
    Removal of the driveshaft is easy. Setting pinion bearing preload to spec on used bearings is very difficult unless you are going to dissassemble the diff and replace the crush sleeve. You may luck out though. If not you will know when the pinion bearings start to make noise.

    Carl
     
  6. NovaFZJ80

    NovaFZJ80

    Messages:
    273
    Likes Received:
    0
    Joined:
    Dec 14, 2003
    Location:
    Potomac Falls, VA
    So is it safe to say that i also should replace the pinion bearings, get a new nut, oil seal, oil slinger, spacer....did i leave anything out ???
     
  7. RavenTai

    RavenTai

    Messages:
    6,048
    Likes Received:
    29
    Joined:
    Nov 16, 2003
    Location:
    Dixie co. Florida
  8. NovaFZJ80

    NovaFZJ80

    Messages:
    273
    Likes Received:
    0
    Joined:
    Dec 14, 2003
    Location:
    Potomac Falls, VA
    okay, received the FSM from Cdan and got the steps to replace the pinion seal....so many diff SST's for the job.. Going to nearby parts store to rent the tools or Sears to buy the tools to remove the seals, bearings, races.