'98-'00 AWD Component Parts Listings
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    1. #1

      '98-'00 AWD Component Parts Listings

      Note that the vin break listed, even in the '99 slide is a '98 vin break. These early ones use SKF bearings. The pinion bearings are the same as RWD 1031 rear pinions: 183841 (HM89449) & 183839 (M86647). Bearing cups are HM89410 & M86610. Main shaft bearings are 32010x, same as AWD Diff.





      mid 98-99 style



      longer pinion to diff casing offset, recessed yoke for CV joint (unlike early '98)



      Volvo reman mid 98-99 unit 8602679 (NLA)



      '00 ONLY


      note the shorter pinion to diff casing offset - which indicates that the right side driveshaft will also be different than '99, having a longer shoulder to provide a seat area for the BG (outer casing) inner seal.





      Note 1 : 9183491 shaft = chassis range S70 465739-621367 V70 465339-630091
      9463300 shaft = chassis S70 621368 - on V70 630092

      The production change here was in regard to the center bearing - later shafts have a larger bearing & carrier.
      Note 2 pertains to the fact that the replacement CV ONLY fits original Prop shafts




      Last edited by lookforjoe; 01-12-2016 at 09:37 PM.

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    3. #2
      Driveshafts - mid 98 - 00



      EDIT 3/08/14: Carrier variations - note that the later 99-00 DS with larger (better) carrier bearing CAN BE USED in late '98's - you have to re-drill the carrier mount holes in the support plate to 2.25 on center, inboard of the existing 3" on center holes.



      Driveshaft/Exhaust support bracket: 9474483 (98-99) 9133420 ('00, NLA)



      listed as position 19 in the Front Floor Section.

      Torque Tube/ VC variations





      mid '98-'99 BG length



      '00 BG length



      change in sump design




      BG internal components



      Difference in '98-99 & '00 Pinion - '00 uses Koyo bearings, smaller OD

      SKF pinion bearings: 183839 (M86647) & 183841 (HM89499) - same as used for the RWD 1031/1041 diff pinion. Carrier bearings: 32010x (2)

      Don't have the numbers for the Koyo bearings



      Diff/BG coupler current PN : 31256008



      check for spline wear here:



      Reference thread on V70R regarding Spline Coupler construction analysis

      Inside Viscous Coupler



      Freewheel Mechanism



      Design & Function




      Typical torn front CV boot





      Binding CV due to lack of grease/cooked - typical cause of vibration



      CV components



      Re-assembled, ready for CV grease - note markings to ensure correct reassembly

      Last edited by lookforjoe; 10-10-2015 at 07:35 PM. Reason: added carrier/exhaust support info

    4. #3
      Member Big Will's Avatar
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      Great post Hussein! This should really be stickied. Thanks for taking the time to document all of that.
      98 V70 AWD - M58 Gearbox | Beüst tune | 20T turbo | Green injectors | NA intake & throttle body, EST Intake, Snabb Fresh Air Pipe & Reverse Intercooler Piping | R Manifold, TME Downpipe, TME Exhaust | IPD Swaybars, Volvo Strut Brace, Öhlins Roadholding Suspension | 302mm front rotors, vented R rears, SS Brake lines | E-code C70 jewel headlamps. Engine build thread

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    6. #4
      Right Axle Variants '98-00

      '98-'00 front to back. Arrow indicates seal seat (28mm OD).

      EDIT: Carrier Bearing VO 9181693 (FEBEST 45x75x19)



      So, the '00 (R) axle doesn't work in an M66 AWD because it's too short. Fixed point is the bearing, since that is located on the engine in the same location regardless of transmission. This is from a 5 speed Auto AWD (R, # 8251521 (8601580) (9463921). If there were any 4 speed Auto AWD in '00, I would expect that it would work as is. The '99 axle PN 8251520 (8601576) (9463762) will work, but the outer BG seal seat is not in the correct location. '98 auto AWD axle pn: 8251509

      EDIT: There seem to be 2 '00 AWD 5 speed auto axles. The one pictured, is from an R. I took an axle from an '00 XC today, and it looks like the earlier design; the PN is 8251523 (8601589) (9463351)



      Either a .5mm collar needs to be fabricated for the seal to seat (1mm difference in OD between seal seat & rest of shaft), or a smaller ID (27mm) seal would need to be sourced. Probably easier to look for a seal, IMO

      28mm ID


      38mm OD



      Shaft OD

      27mm

      Last edited by lookforjoe; 01-23-2016 at 11:41 AM.

    7. #5
      The '00 XC 4 speed auto axle (9463351) 8251523 is the correct axle for anyone doing an '00 M66 conversion





      The problem is that the aftermarket sources have the listings all screwed up. If you order a 8251253, it is (incorrectly) superceded to 8251251, which is the Volvo # for the '00 R axle. The correct axle is sold under 8251520, which is the Volvo # for the '99 axle!

      Last edited by lookforjoe; 02-19-2013 at 09:14 PM. Reason: change 5 speed auto to 4 speed auto

    8. #6
      Member matt1122's Avatar
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      Thanks for posting this information, it's come in handy and I've learned a bit from it. I see the section on the lock-up mechanism under the freewheel description is cut off and was wondering if anyone could help me find that information. Would love to know more about how that works.

    9. #7
      Quote Originally Posted by matt1122 View Post
      Thanks for posting this information, it's come in handy and I've learned a bit from it. I see the section on the lock-up mechanism under the freewheel description is cut off and was wondering if anyone could help me find that information. Would love to know more about how that works.
      It's actually shown in the pic - the ramped ball bearings constitute the centrifugal lock-up - they are thrown outwards & lock the inner & outer shafts. When that goes bad, it sounds like a bag of bearings being rattled around in a tin can.

    10. #8
      BG seal part numbers:

      Carrier seals (2) 9143879 (position 3 in the '00 diagram, same part for 97-)
      Driveshaft seals (2) 9143885 (where shaft passes inside BG, and into differential)

      Crown nut O-ring (1) 925258

      Fill plug seal (1) 11998

      Pinion seal (1) 9183891 (I would NEVER replace this unless it's obviously leaking! Just like the rear diff, there is a compression collar that sets the pinion backlash - if you don not torque to spec, you WILL damage the BG!)

      Diff sleeve outer seal (automatic trans AW50-42) (1) 9496129
      Diff sleeve outer seal (automatic trans AW50/51 AW55-50) (1) 8636194
      Diff sleeve outer seal (M66) (1) 9143911

      Chromed Diff/BG Sleeve (1) 31256008 (9181408)
      Oring (1) 976041



      Last edited by lookforjoe; 03-19-2013 at 11:17 AM. Reason: PN change, add illustrations

    11. #9
      Diff/BG collar: What to look for. Typically the splines will wear on the BG side of the collar. What you need to look for in terms of wear is that the splines still have a 'flat' between each valley:



      Look at this pic, you can see the splines are worn to a sharp edge, next step would be stripping of the collar, and subsequent damage to BG


    12. #10
      Junior Member
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      Wow (H/LookforJoe),
      detailed, time consuming, and yet extremely valuable.
      As a new member, I will speak for the "future members of the community" to say
      "Thank You" for generously putting in the time and effort to document your experience and share it with us.

      Kudos also to all those that keep this opportunity open to us (via the forums/site).

    13. #11
      Update. IPD now sells an AWD right side axle that will work on both '99 and '00 4spd auto models - which means you can replace your dead '00 BG with the more readily available (late)'98-99 BG's, you just have to buy the custom axle from IPD - it has seal seats in two spots, to accommodate both versions.

      EDIT: NOTE - The '00 Down Pipe will require modification also if the earlier Bevel Gear is used - the change in offset of the pinion will negatively impact fitment of the stock '00 DP.

      IF you are planning a manual AWD swap on your '00 R, you will need BOTH left and right axles (either '99 or '00 4spd) - the 5spd auto axles DO NOT fit the M66/or M58 trans. You will also need the '98-99 trans mount (9161101) instead of the '00 version.

      The left axle lacks this shoulder:

      this pic courtesy of BlackT5 on VS



      needs to look like this:





      which the illustrated seal will seal against

      Last edited by lookforjoe; 05-29-2014 at 09:05 PM. Reason: correction

    14. #12
      If installing a Quaife 14J (AWD) differential, you need to order 32008 and 32010 bearings



      housing and axle seals

      Last edited by lookforjoe; 04-26-2015 at 08:04 AM.

    15. #13
      awesome!

      thanks for providing such a bunch of useful information on awd parts!

      i have a question tho..
      how can i test the freewheel unti on a vc-unit?

      mine doesnt work - since it doesnt disengage when i hit the brakes..
      so it transfers power to my bg and therefore will kill my coupler or even more parts

      i have a spare vcu lying around tho - but was wondering how to check for function before i put it in the car?

      further i have another vcu here (newer, shorter version) and was wondering which parts differ to match the changed lenght?
      the prop shafts are all the same length as i understood.. so the flange of the bg is longer? and is the mounting plate on the newer version different?

      thx alot in advance already!

      greetz!aziz

    16. #14
      This is an information only thread - Start a new thread & post what you have here.

      Quote Originally Posted by aziz View Post
      awesome!
      greetz!aziz
      Last edited by lookforjoe; 06-27-2014 at 08:58 PM.

    17. #15

      Im looking for a right axle for my V70r 2.4 awd aut from 2000

      Quote Originally Posted by lookforjoe View Post
      Right Axle Variants '98-00

      '98-'00 front to back. Arrow indicates seal seat (28mm OD).

      EDIT: Carrier Bearing VO 9181693 (FEBEST 45x75x19)



      So, the '00 (R) axle doesn't work in an M66 AWD because it's too short. Fixed point is the bearing, since that is located on the engine in the same location regardless of transmission. This is from a 5 speed Auto AWD (R, # 8251521 (8601580) (9463921). If there were any 4 speed Auto AWD in '00, I would expect that it would work as is. The '99 axle PN 8251520 (8601576) (9463762) will work, but the outer BG seal seat is not in the correct location. '98 auto AWD axle pn: 8251509

      EDIT: There seem to be 2 '00 AWD 5 speed auto axles. The one pictured, is from an R. I took an axle from an '00 XC today, and it looks like the earlier design; the PN is 8251523 (8601589) (9463351)



      Either a .5mm collar needs to be fabricated for the seal to seat (1mm difference in OD between seal seat & rest of shaft), or a smaller ID (27mm) seal would need to be sourced. Probably easier to look for a seal, IMO

      28mm ID


      38mm OD



      Shaft OD

      27mm


      Dear lookingforjoe,

      Can you help me?
      I need right axle for my V70r 2.4 awd aut from 2000 and cant find it anywere.
      Thank you very much

      Greets Laser Blue

    18. #16
      Quote Originally Posted by lookforjoe View Post
      Driveshafts - mid 98 - 00

      I don't know if it's the camera angle, but is the '00 driveshaft longer than the '98-99?
      Also, if I wanted to use a shaft from a '99 XC in my '00 XC, would it work? I have an upper end VIN as far as the VIN split goes and I don't know the VIN of the '99
      Last edited by Cabbagefumes; 01-23-2017 at 10:51 AM.

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