Results 1 to 5 of 5

Thread: Driveshaft phasing - Puma 90

  1. #1
    Join Date
    May 2014
    Location
    Tamworth NSW
    Posts
    4,291
    Total Downloaded
    0

    Driveshaft phasing - Puma 90

    Just checking the the defender 90 driveshaft/propshaft phasing.

    I removed my drive shaft to clean an oily handbrake drum, and popped the rubber boot to check the grease on the splined shaft. Also gave it a bit of a degrease after a few cycles of grease have been flung around over the kilometers. Foolishly, I didn't mark it before I removed the short splined shaft from the driveshaft proper.

    Service manual suggests short splined shaft is required to be 'out of phase' by approx 60 degrees (guessing 60 degrees, as there are 6 rows of ball bearings for the 6 splines on this shaft):



    Just checking that given that the overall shaft (large part) is balanced from factory, if it's possible to be out of balance by 180 degrees on the short section at the phasing per FSM recommendations?
    In less technical terms, if I make it look like the picture, do I have to worry which one of the 2 possible options I have to make it so?
    -Mitch
    'El Burro' 2012 Defender 90.

  2. #2
    Join Date
    Mar 2010
    Location
    victoria
    Posts
    272
    Total Downloaded
    0
    bumping an old thread.

    I'm curious what happens if you drive with a prop shaft that is out of phase? - Whether it is equally aligned at each end or offset 180 degrees rather than the 'recommended' 60 degrees? Another question, if it is offset by 60 degrees does it matter if the offset is positive 60 or negative 60 degrees (ie: 60 degrees versus 300 degrees)

  3. #3
    Join Date
    May 2014
    Location
    Tamworth NSW
    Posts
    4,291
    Total Downloaded
    0
    I can't answer that as the noise / problem I was chasing was in the rear diff, which ultimately resulted in a cracked planet gear, snapped cross pin, and a busted centre in the rear, and approx 8 stripped teeth on the front ring gear-n all at the same time.

    I spoke with a local driveshaft place, and they were not able to give much info without taking it in for a look, but I suspect that it would either be a harmonic type rattle locked to engine RPM, ranging down to almost unnoticeable.
    -Mitch
    'El Burro' 2012 Defender 90.

  4. #4
    Join Date
    Jul 2011
    Location
    Yarrawonga, Vic
    Posts
    6,513
    Total Downloaded
    0
    Rear propshaft needs to be in phase because the TC output shaft and Diff pinion are on horizontal planes , Front propshaft is out of phase because the front diff pinion points uphill toward TC (presumably to give the track rod some ground clearance ).

    this will give you some understanding


  5. #5
    Join Date
    Mar 2010
    Location
    victoria
    Posts
    272
    Total Downloaded
    0
    Quote Originally Posted by goingbush View Post
    Rear propshaft needs to be in phase because the TC output shaft and Diff pinion are on horizontal planes , Front propshaft is out of phase because the front diff pinion points uphill toward TC (presumably to give the track rod some ground clearance ).

    this will give you some understanding


    I imagine the driveline vibration would be quite noticeable but is it only driveline vibration? Does that damage only the propshaft or does it flow through to the TC and/or diffs aswell? If so, which components are most susceptible to damage? How quickly would it cause damage?

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!