looking for 4106 4 spd trans

[Red Rider]

My Spicer 4 speed has been named officially worn out. I'd like to find one that has a known history, preferably a "take-out". I'm in Southern Utah so anything in the west would be just wonderful.

I'm well aware that these units are becoming harder to find however this board continually bails folks out when they have special needs. Any help would be appreciated.

[luvrbus]

Ok you GM people will a 4 speed from a 4905A work for Mikey's 4106 ?

[bs4104]

Cliff: I think all 4905 had a wet clutch. Because Mike's input is out??? What type of input shaft bearing was in Jim old engine, Was it replace with a dry bearing for the 06.
Mike: there is two 06 for parts where you just were a week ago!!! Call Robert about them.
Bruce

[TomC]

Time for Allison V730! Good Luck, TomC

[Red Rider]

Hey Tom;

You may not believe it but I enjoy the 4spd.

Clifford;

I can't believe you've forgotten something. When we where doing the engine at your place I had some "time-out" because this current engine had a wet clutch and we had to jump through hoops to change everything over. The tranny that I have had the same abuse that old engine did so you can figure there is not a lot to work with.

Bruce;

I thought of that but how in he word would I get one out of any of his buses?



Thanks everybody.

[luvrbus]

It was a wet clutch Bruce the one I removed from a 4905 was converted over to a dry clutch my understanding is the input was the only change because the wet clutch uses more splines than the dry clutch and he could not find a clutch plate with matching splines  


Don and Cary have 730 listed on the BNO for 900 bucks if Mikey wants to go that direction I didn't forget Mike I was still typing and see that $#!% on my trailer  lol  tell us what you mean by worn out ? while you are here is there a Roy Rammer in the GM club and send me Halls phone # thanks

good luck

[Red Rider]

Dan and I pulled the trans out today because there was a fluid leak coming out of the main drive into the bell housing. When we got it out we find almost 1/2 " of play and pieces of the front carrier bearing fell out in my hand. If the main shaft and bearings are in that condition I figure the rest is about the same. Finding the correct parts and the cost of them seems to me not as practical as a replacement unit --- of course the condition and history is most important.

[luvrbus]

Do a bearing job and run that puppy bearing are not hard to find for that transmission any bearing house will have those or can order if you buy a used one I would replace all the bearing before I installed it anyway those transmissions are not hard to rebuild

[bs4104]

Mike: 15 years ago Don Matthews sold Gary's 4 speed to a friend, He (friend) & I pull it out a Gary's in the dirt, loaded it up haul it to a truck stop in Portland to pull and replace his bad 4 speed and then came home, all in the dirt. Gary came home went to move his bus to find he need to find a tran's for his. Don thought he need a VS2!!!   You should call Robert & see if he might sell you one.  Also you might try Dick Grasso in Golden Valley.
Bruce

[Red Rider]

Thanks again Clifford.

[Len Silva]

If the gears are OK, replacing the bearings should not be too hard.  I doubt that any bearing house can cross to the old GM part numbers but the bearing will have numbers on them that they can use..

[luvrbus]

You don't need numbers all good bearing supply use high tech measuring equipment now when through measuring it puts the bearing number on the computer screen technology at it's best

[twostick]

I'd be surprised if the bearings in that trans didn't all say Timken on them followed by a bearing number. Should be able to get them anywhere unless they were captive to Spicer. The tricky stuff might be hard parts like sliding clutches but if it isn't jumping out of any gear on accel or decel they are likely OK.

If you like the 4 spd go with a re-bearing and input shaft and drive it another million miles. If you buy a used trans then that is all you have, a used trans and you already have one of those. The one that have you at least know/have some history with.

Kevin

[Red Rider]

As usual the board has come through will a lot of good info. I'm reluctant to go into the trans however, the issue of shims, spacers, possible shafts and gaskets make me nervous. Aligning that "v" is another concern I have. A straight box that is not model specific is one thing, but I hate jumping into something that I'm aware I know nothing about.

Thanks again.

[luvrbus]

Before I gave up Mikey I would disassemble the transmission you have that is a simple transmission no sycno gears just sliders and forks if the transmission was not knocking from teeth missing go for it tear it apart you have nothing to lose except 1 day with Dan 

If the bearing surface and seat on the main shaft is ok and if bad they can welded and turned the rest is easy? at our age how much longer do except the bus or us to last