Volvo RWD 900 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 2/2004 900 INDEX

[<<]  [>>]


THREADED THREADED EXPANDED FLAT PRINT ALL
MESSAGES IN THIS THREAD




  REPLY TO THIS MESSAGE    PRINT   SAVE 

AW7x Transmission Interchangeability 900

posted by  chrisbradberry on  Sat Jan 23 19:22 CST 2021
Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
last visit: Tue Dec 8 13:56 CST 2009
[RELATED]

Can a 03-71L be replaced with a 03-70L? The 03-71L is in a 1993 940 non-turbo wagon. The 03-70L is from a 1990 740 non-turbo sedan. From what I've read I think they can be interchanged. Right?








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    AW7x Transmission Interchangeability Tailshaft bnushing v. bearing? 900

    uid 46171's pic
    posted by  kittysgreyvolvo on  Mon Jan 25 06:14 CST 2021
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Sat Oct 18 15:23 CST 2014
    [RELATED]

    If you have an AW7x and want to swap, does the tail shaft bushing AW7x version versus the tail shaft bearing AW7x bearing version have a different length?

    Also, could the AW7x output flange vary in diameter?

    Finally, the 1992-1993+ AW7x, no more tail shaft bearings are made by AW or the bearing company that made them. Sort of an AW7x with tail shaft bearing armageddon eventually?

    Wondering.

    M47 II Boyeeeeeeeeeeeeeeeeeeeeeee
    --
    Beh.








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    AW7x Transmission Interchangeability 900

    posted by  Volvo From Heck on  Sun Jan 24 08:35 CST 2021
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Mon Oct 13 20:56 CST 2014
    [RELATED]

    The 2 transmissions are completely interchangeable. The main difference between a 70 and a 71 is the shift quality. There "cushions" that smooth out the shifts on the 70. On a 71 those "cushions" are deleted resulting in a more snappy shift. Use the torque converter original to each transmission. - Dave








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      AW7x Transmission Interchangeability 900

      posted by  chrisbradberry on  Thu Jan 28 21:58 CST 2021
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Dec 8 13:56 CST 2009
      [RELATED]

      Do you know if there are any problems with replacing a AW71L w/convertor with a AW71 w/convertor? This is in a 1993 940 non-turbo wagon. Thanks








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        AW7x Transmission Interchangeability 900

        posted by  Volvo From Heck on  Thu Jan 28 23:03 CST 2021
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Mon Oct 13 20:56 CST 2014
        [RELATED]

        You will lose the lock-up function but otherwise there would be no problem. - Dave








        •   REPLY TO THIS MESSAGE    PRINT   SAVE 

          AW7x Transmission Interchangeability 900

          posted by  chrisbradberry on  Fri Jan 29 17:47 CST 2021
          Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
          last visit: Tue Dec 8 13:56 CST 2009
          [RELATED]

          What does the lockup function do, and without it should I expect my 940 non-turbo wagon to perform differently? Thanks








          •   REPLY TO THIS MESSAGE    PRINT   SAVE 

            AW7x Transmission Interchangeability 900

            posted by  Volvo From Heck on  Fri Jan 29 18:42 CST 2021
            Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
            last visit: Mon Oct 13 20:56 CST 2014
            [RELATED]

            I had it on my '92 940 Turbo. Once at cruising speed (I guess it's sensitive to throttle pressure-the kick down cable) the transmission makes a very subtle shift from OD and the rpm comes down a few hundred revs lower than normal OD rpm at whatever speed. On a long trip I guess that could amount to 1-2 mpg cost if not in operation. - Dave








    •   REPLY TO THIS MESSAGE    PRINT   SAVE 

      AW7x Transmission Interchangeability 900

      posted by  chrisbradberry on  Sun Jan 24 13:56 CST 2021
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Tue Dec 8 13:56 CST 2009
      [RELATED]

      Thanks for the info. Do you happen to know if that difference in the way the two trans shift is due to differences only in their valve bodies, or are there other differences? Just curious.

      I'm suspicious the problem with mine is within the valve body; something clogging it or something overly worn in it that's keeping it from shifting to 4th gear. My trans has always performed well until now.








      •   REPLY TO THIS MESSAGE    PRINT   SAVE 

        AW7x Transmission Interchangeability 900

        posted by  Volvo From Heck on  Mon Jan 25 08:27 CST 2021
        Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
        last visit: Mon Oct 13 20:56 CST 2014
        [RELATED]

        I do not know if there is actually a difference in the valve bodies themselves. The "cylinders" I wrote of are built into the body of the transmission itself (positioned vertically) and covered by the installed valve body. The "pistons" are rather flat and have an "o" ring around the perimeter. Those "pistons" are deleted on the transmissions (71) meant for turbo cars. Beyond that I do not know. - Dave








  •   REPLY TO THIS MESSAGE    PRINT   SAVE 

    AW7x Transmission Interchangeability 900

    posted by  spook on  Sun Jan 24 07:18 CST 2021
    Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
    last visit: Fri Oct 24 08:06 CST 2014
    [RELATED]

    Dear chrisbradberry,

    Hope you're well. In the Volvo pocket data booklet - Cars (700, 850, 900) 1991-1996, there are several pages with transmissions specifications. For most parameters, the data are presented as "70/71". This suggests that the two transmissions are very similar. This similarity suggests a swap should not be problematic.

    Hope this helps.

    Yours faithfully,

    Spook







<< < > >>



©Jarrod Stenberg 1997-2022. All material except where indicated.


All participants agree to these terms.

Brickboard.com is not affiliated with nor sponsored by AB Volvo, Volvo Car Corporation, Volvo Cars of North America, Inc. or Ford Motor Company. Brickboard.com is a Volvo owner/enthusiast site, similar to a club, and does not intend to pose as an official Volvo site. The official Volvo site can be found here.