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Topic: output speed sensor, allison (Read 1138 times) previous topic - next topic

output speed sensor, allison

I have seen several recommendations for carrying an extra transmission output speed sensor.  I have looked on the forum and elsewhere, and have not come up with a part number for my 4060R.  Many on the 'net appear to be generic types and specify that they are not compatible with a retarder.

Someone have a part number?
Matt B
1998 u-320

Re: output speed sensor, allison

Reply #3 –
I believe I found that number on the Allison website for my trans with the retarder.  It's been in for a year and a half with no issues.
Keith
2003 U320 38' #6197

Re: output speed sensor, allison

Reply #4 –
Quote from: WS6_Keith –
I believe I found that number on the Allison website for my trans with the retarder.  It's been in for a year and a half with no issues.
Thanks for the update!  I will order one for my "spares" box.
Matt B
1998 u-320

Re: output speed sensor, allison

Reply #5 –
Ted at TKT sales (allisontransmissionpart.com)  confirmed 29544139 is the correct sensor for a 4000 w/retarder.

He also said they only do commercial accounts now, so not a source for the sensor.

Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: output speed sensor, allison

Reply #6 –
Quote from: AC7880 –
Ted at TKT sales (allisontransmissionpart.com)  confirmed 29544139 is the correct sensor for a 4000 w/retarder.

He also said they only do commercial accounts now, so not a source for the sensor.


Thanks for the additional layer of confirmation.  people be aware that MANY of the generic imported parts that answer to that reference number specify "without retarder."  I don't know what the difference would be.
Matt B
1998 u-320

Re: output speed sensor, allison

Reply #7 –
Quote from: AC7880 –
Ted at TKT sales (allisontransmissionpart.com)  confirmed 29544139 is the correct sensor for a 4000 w/retarder.

He also said they only do commercial accounts now, so not a source for the sensor.



We purchased one from a Freightliner dealer. 
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: output speed sensor, allison

Reply #8 –
Quote from: Michelle –
We purchased one from a Freightliner dealer. 

Was that for a on board spare, or to fix a issue?

My spare parts box is buried deep in a bay right now behind heavy tool boxes.
Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: output speed sensor, allison

Reply #9 –
Quote from: AC7880 –
Was that for a on board spare, or to fix a issue?

My spare parts box is buried deep in a bay right now behind heavy tool boxes.

To fix an issue.  It was either that or a tag axle ABS sensor that was causing the torque converter to drop out of lockup.  We replaced both and the problem went away. 

Transmission seems to be hunting, 2003 U320, need help

Art & Polly's post was a clue

Torque converter locking up and then unlocking at highway speeds.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: output speed sensor, allison

Reply #10 –
To follow that rabbit trail, those speed sensors can cause transmission issues. I disabled our abs because of them doing it twice.
Robert and Susan
 1995 36' 280 WTBI 8.3 3060r
 1200 watts on the roof, 720 Ah of lithium's
 Build # 4637. Motorcade # 17599
        FMCA  # 451505
        18  Wrangler JLUR

Re: output speed sensor, allison

Reply #12 –
Quote from: FourTravelers –
Will this sensor work with the 3060R transmission? 
Asking for a friend........... ::)
 
I believe it is different. I had issues with a speed sensor on a prevous coach with the 3060, but no longer have the documents on which  one it was (all maint docs went to buyer of coach)
Dan - Full timing since 2009
2003 U320 40' Tag 2 slide

Re: output speed sensor, allison

Reply #13 –
Regarding the 3060, there are two speed sensors installed, one on the output shaft area, and one is specific for the retarder equipped trans.  They are not interchangeable.  The retarder sensor is easily identifiable, just tell your Allison dealer you want the $400.00 one. 
"Not so  long ago we were a nation of risk takers, riding five million pounds of  thrust straight into space."  Joe Gresh
Chuck Pearson
1996 U295
2018 Can Am X3 TurboRS