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Thread: ISRI seat info

  1. #1
    Join Date
    Oct 2019
    Location
    Tucson
    Posts
    141

    Default ISRI seat info

    Hi all,

    So I rebuilt my ISRI drivers seat and I thought I would pass along this info.

    $5.00 bucks and a used air regulator and I had a custom air controlled seat.

    seat001.jpg

    the 4mm ( 1/4" air line " black tube " ) is reduced with a fitting that is not available, I had to build this connector, it's 1/4" X 2.44mm.

    the tubing ( yellow ) is 2.44mm, I found this at my local Parker fitting store.

    here is the receipt so you can see exact part numbers.

    seat002.jpg

    I also installed a air regulator that supplies air to the airbag under the seat, now I can adjust the air pressure for a softer ride, It works really well. I put the regulator behind the drivers seat to the left.

    Hope this helps someone.
    2000 Prevost Liberty H3-45 Hamden Edtion

  2. #2
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    4,652

    Default

    Good info.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  3. #3
    Join Date
    Mar 2013
    Location
    Chicago
    Posts
    3,988

    Default

    The seats if they do not have a ride height valve like isri would use an pneumatic up and down button where u used the regulator. Result would be the same.

    The other added advantage of losing the stupid ride height valve in the seat besides the ability to adjust pressure is when making a hard right turn when u pull yourself up out of the seat to get that wide angle view of the right mirror ....when u go to sit back down the seat still retains its air and u dont end up bottomed out sitting on the floor waiting to come back up.

    20200206_090633.jpg

    If prevo wanted to make a great improvement to their product they would chuck the ISRI for Bostrom.They r a lot less trouble way less doe and give the same ride.
    Last edited by Joe Camper; 02-06-2020 at 09:11 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  4. #4
    Join Date
    Oct 2019
    Location
    Tucson
    Posts
    141

    Default

    Got really tired of that ISRI seat, replaced it today with a seats driving seat, what a difference.

    Electric and air up n down still work, anyone need parts ?

    Rick
    2000 Prevost Liberty H3-45 Hamden Edtion

  5. #5
    Join Date
    Mar 2013
    Location
    Chicago
    Posts
    3,988

    Default

    As of today the deepest i will go into one of these IRSI is identifying any leaks and plugging the air source in the bay below. I avoid all unnecessary agitation and ive plenty of other work. Will not order parts nothing.
    Last edited by Joe Camper; 10-14-2020 at 09:16 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  6. #6
    Join Date
    Nov 2018
    Location
    PIEDMONT
    Posts
    462

    Default

    I was the dummy that actually fixed mine. Removed entire seat with base and set it on the dinette table. Yes it was a PIA. Mine had a broken small diameter air line. After buying 4mm line and connectors from different sources, I could not come up with a combination that would stay together for any length of time. Had a truck shop attempt same thing and after a couple hours they gave up. So I ordered new airbag AND switches/manifold from Prevo thinking (as did the Prevo parts guy) those 2 together should be enough small diameter line. I had already tried ordering just line from Prevo and what I got was too big.

    So.....re-install seat with new parts. All's good until a few inches from max height and airlines on the new components pull apart. Almost, but NOT QUITE long enough.

    Thanks to Jason at Willingham Inc who sent me some "proprietary" ISRI connectors - that are not avail for sale as parts??? I was able to splice in a section of old line to make it work.

    And to add, I had called ISRI in U.S. and was told they were in the process of moving and the "bus and coach" guy that had been there for a few decades they had let go.

    These seats aren't very user friendly parts wise.

    Billy & Lisa Gaines
    1996 Marathon XL40

  7. #7
    Join Date
    Jul 2020
    Location
    Simi Valley
    Posts
    868

    Default

    Ok so i was ready to install my drivers ISRI today and when i went to plug in the airline it crumbled in my hands. Was I surprised? No, not since i have replaced a bunch of other crumbly rubber seals and other tubing. So i dove into the seat, its actually pretty straight forward and simple, i don't have any paperwork or info on mine, best guess is it's a 6000 series frame with a country coach covers and seat pads. Mine is manual with air suspension and has 2 bladders that can be filled via 2 buttons on the side of the seat. I will replace the airlines , test and reassemble. It also gives me a chance to touch up the spots i missed with the leather Dye.




    Attached Images Attached Images
    Mike Giboney
    1992 Prevost Country Coach
    #60187

  8. #8
    Join Date
    Mar 2013
    Location
    Chicago
    Posts
    3,988

    Default

    All of u out there with ISRI getting 15 or 20yr old. If u begin to have any issues. What Mike is doing here is only correct way to fix it right. It's no small task. Mike I might add I see u left the base of the seat in and with good reason. However that line going to the airbag is the same crumbly crap dont leave it.

    Bandaid repairs on these dont last long.

    20201224_094935.jpg

    Their lines r proprietary although one of the sizes is equal to 1/4 the constitution of the line is more rubber than plastic of a 1/4 dot air line. Above is a barbed adapter they have to get u to that other dimension that really dont match up with a standard.

    20201224_095012.jpg

    20201224_095123.jpg

    The small rings r to squeeze and hold the lines to the barb they pull and twist away. The smaller end of those rings towards the splice not the other way around.

    20201224_095142.jpg

    20201224_095158.jpg

    Bam. I see where Midguy has come up with a parker line that crosses however look where it inserted on the back of the lumbar button. The more plastickystiffer replacement risks breaking the plastic barb out the back of the switch pushing it on and I'm not sure if u can even reuse a ring.

    Mike if it hasent already begun u r going to be getting solicited. A guy could probably stay real busy just rebuilding these seats
    Last edited by Joe Camper; 12-24-2020 at 10:13 AM.
    1990 Peterbuilt 377
    3406 B Caterpillar
    13 Speed Roadranger
    No Norgrens


    1 day on paper no machines

  9. #9
    Join Date
    Jul 2020
    Location
    Simi Valley
    Posts
    868

    Default

    See attached, I think it is much easier to work on the seat with the seat cushion and back slip cover removed.



    Attached Images Attached Images
    Mike Giboney
    1992 Prevost Country Coach
    #60187

  10. #10
    Join Date
    Jul 2020
    Location
    Simi Valley
    Posts
    868

    Default

    Hey Joe, I bought a 4" aux air gauge, i am going to mount it where my old Backup camera was.
    Attached Images Attached Images
    Mike Giboney
    1992 Prevost Country Coach
    #60187

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