Replacing the Driver's Seat
 

Replacing the Driver's Seat

Started by ktmossman, August 22, 2021, 01:24:15 PM

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ktmossman

I had planned to replace the driver's seat on my J4500 eventually, but now it looks like I need to do it sooner rather than later.  This leads to a couple questions:

1. What seats have you found that you like?
2. What is the best place to buy new seats?
3. Are there sources of reliable used seats?
Kevin Mossman
2006 MCI J4500
Dallas, TX

RJ

Kevin -

What's wrong with the factory seat?

Bostrom is the big player in the 18-wheeler market.

American, Isringhausen, National, Recaro and USSC are the major players in the bus world.

All of the above have websites, you can source a local supplier via their "locator" options.

An 18-wheeler wrecking yard can be a source of used Bostroms.

National used to be the OEM supplier to GMC and MCI (at least thru the MC-9s.) Don't know who they're using for the Js.

Isri's are very common in Prevost motorhome shells.

Recaros have extremely comfortable backrests, with excellent lumbar support. However, some of the cushions in their older models tend to be thinner than others, thus leading to one becoming "saddle sore."

High-backs are more comfortable "for the long haul" compared to low-back models.

FWIW & HTH. . .  ;)
1992 Prevost XL Vantaré Conversion M1001907 8V92T/HT-755 (DDEC/ATEC)
2003 VW Jetta TDI Sportwagon "Towed"
Cheney WA (when home)

dtcerrato

Our 4104's oem National driver's seat is still in it 42 years later. It's nothing special to look at but the extreme comfort on extended drives tells the whole story...
Dan & Sandy
North Central Florida
PD4104-129 since 1979
Toads: 2009 Jeep GC Limited 4X4 5.7L Hemi
             2008 GMC Envoy SLT 4x4 4.2L IL Vortec

luvrbus

Call Sam Caylor if it is like the one I replaced for the school the driver caught fire while smoking that was a $4500.00 seat not many truck seats if any will work with the dash design in a J4500
Life is short drink the good wine first

ktmossman

QuoteWhat's wrong with the factory seat?

First, the air line cracked.  So, we pulled the seat cushion off to get to the air line and everything we touched inside the mechanicals (trying to get to the air line) just fell apart.  Knob mounts broke, clips cracked, cables broke, the entire air line is brittle (Every time we tried to clamp it, it cracked again.). I already knew none of the controls worked and the cushions were bad (which is why I had planned to replace it later in the process.) But now, I'm not even sure I can get the cushion to stay attached because the mounting clips broke.  So, I think the safe thing for driving in the short term is just to go ahead and replace it now.
Kevin Mossman
2006 MCI J4500
Dallas, TX

Jim Blackwood

Maybe you could rebuild it with all new soft parts?

Jim
I saw it on the Internet. It MUST be true...

Dave5Cs

So Mrs. Lincoln other than that how was the play? LOL :^
"Perfect Frequency"1979 MCI MC5Cs 6V-71,644MT Allison.
2001 Jeep Cherokee Sport 60th Anniversary edition.
1998 Jeep TJ ,(Gone)
Somewhere in the USA fulltiming.

sledhead

you could redo all the guts with all new stuff for a fraction of the price of a new one , air line is cheap . this way you know everything will fit . ask a upholstery place if they can redo the bits and you re-install them .

I had to do this on the coach even though I bought the seats brand new at a rv surplus outlet .
they were to soft for my liking

dave 
dave , karen
1990 mci 102c  6v92 ta ht740  kit,living room slide .... sold
2000 featherlite vogue vantare 550 hp 3406e  cat
1875 lbs torque  home base huntsville ontario canada

ktmossman

I looked into getting the parts to rebuild.  I think I can get them all, but while they may have anticipated someone replacing a part or two, they didn't intend for an untrained person to rebuild the entire seat.  The parts diagram is an absurdity which could only have been dreamed up by Rube Goldberg himself.  By the time I buy all the parts and find/pay someone who could actually do it, I'm probably not going to save much.

I have also discovered that, if you want to spend enough money, you can get a seat that will do just about everything but cook you breakfast...
Kevin Mossman
2006 MCI J4500
Dallas, TX

Runcutter

Kevin, I don't know what part of Dallas you're in.  You might talk with Brunner Trim and Glass on Garland Road, not far from White Rock Lake.  I took my car to Butch on the recommendation of my car dealer.  Straight forward and old school.  They could certainly do any upholstery, and might be able to take care of the seat mechanics too -- I don't know that for sure though.

Another option might be Darby Diesel in Hutchins.  Mike Darby, a former DART mechanic owns it.  I know he's scrapped some MCI's over the years, he might have one in progress. 

Arthur
Arthur Gaudet    Carrollton (Dallas area) Texas 
Former owner of a 1968 PD-4107

Working in the bus industry provides us a great opportunity - to be of service to others

chessie4905

I bought a used Bostrom air ride seat from truck salvage yard. Bostrom sells a FRED kit. New upholstery, New foam and armrests ( extra cost) I bought a piece of steel to adapt it to my floor holes. 3 line up perfectly. The 4 hole on Bostrom seat requires a hole where angle framing is, so stud attached to plate for 4th hole. Air line through un- used factory hole to air supply in under driver's  compartment.
Bostrom kit is available in 4 or 5 colors.
GMC h8h 649#028 (4905)
Pennsylvania-central

Utahclaimjumper


There are also a lot of Flexsteel RV units that are 8 way electric to choose from..>>>Dan
Utclmjmpr  (rufcmpn)
EX 4106 (presently SOB)
Cedar City, Ut.
72 VW Baja towed

buswarrior

Is there a step, hard up against the rear of the seat mount?

Can't remember...

In all of the earlier models, that step can render some lovely air ride seats useless, it conflicts with the seat, or the mount ends up too far forward.

Primary reason an mci seat won't go any lower.

In the Dallas market, find out where the bus companies are having their seats re-built. Someone is doing it by the dozens.

Happy coaching!
Buswarrior
Frozen North, Greater Toronto Area
new project: 1995 MCI 102D3, Cat 3176b, Eaton Autoshift

luvrbus

LOL I may be dreaming but I recall  the seat was off set on the frame not the pedestal   
Life is short drink the good wine first

ktmossman

Thanks for all the ideas...

Yes, there is a step-up behind the seat, but it is shallow (2.5" w/ the subfloor).  The base is up against it, but the seat goes back past it. (I kept that step in place when I raised the front floor level.). Worst case scenario is that I can build a steel base that notches up over the step to set the seat base back a little farther.

Another question:  For our purposes (not driving all day, every day,) is the "air ride" that big of a deal?  I can get a power adjustable seat with all the adjustable lumbar support, etc. without using the air.  It seem that moving to an "air ride" seat boosts the price a good bit. 
Kevin Mossman
2006 MCI J4500
Dallas, TX