Allison Vs2-8

tekebird · April 21, 2007, 07:11:51 PM

problem: Transmission 'slipped out of gear" will not go back in?

Don't know much more than that at present.

will update as info comes in.

Any Ideas from guys familiar with this tranny?

gomer · April 21, 2007, 07:19:27 PM

teke bird<< tell me more if you can and I will look in my books for the answer

tekebird · April 21, 2007, 07:38:53 PM

thanks I will post an update as info comes in....Not my bus

Paso One · April 21, 2007, 07:43:59 PM

When I drove Fishbowl Brians VS2-8 tranny the wires fell off the solenoid at the back tranny door and the same thing would happen. If you shut it down and check the wires on the solenoid first. You can also move the lever manually when shut off.

tekebird · April 21, 2007, 08:11:21 PM

Here is what I got so far.

Earlier today the transmission did not want to go into gear, it eventually did.

Intermitant Clunking noise when toggleing from N to F or N to R.

tekebird · April 21, 2007, 08:11:46 PM

Bus is presently in Amarillo Tx

Utahclaimjumper · April 21, 2007, 08:22:58 PM

Doug, this trans is normaly controled with a pair of skinner valves that are electricly connected to a simple switch (f-n-r) an air ram mounted on the bottom of the trans moves the shift lever for & aft. but on the bottom of the ram is a ball type lock-out that prevents the possibility of being in two gears at the same time. four wires connect to this lock-out switch and can cause your problem if any are broken.>>>Dan

tekebird · April 21, 2007, 08:30:29 PM

thanks I will pass that on

tekebird · April 21, 2007, 08:33:59 PM

tow Truck on scene....so it will be off the side of the road shortly.

tekebird · April 23, 2007, 06:15:12 PM

not selenoid, not wires, not screen

now they are thinking the pump is bad

anyone have a manual for the VS2-8? I had several but sold them a few years ago.

you can email me at tekebird@yahoo.com and I can put you in touch with the party in need

Thanks

NJT 5573 · April 23, 2007, 07:11:27 PM

Teke my friends VS2-8 has an external filter. If the pump is working you can see the lines flex and feel them pulsate by touching them. We had pressure. The shop mechanic he chose in Auburn Wa. told us the VS2-8 is a city transmission and that if it is driven on the freeway in high lock no fluid circulates and it will melt the rubber O rings inside the tranny. We were told that to use this tranny on the freeway to stop and cycle fluid often. $2000 fixed the tranny but we had to pull it.

tekebird · April 23, 2007, 07:28:46 PM

all the early Buffaloes Autos were VS2-8's

NJT 5573 · April 23, 2007, 08:36:18 PM

Teke, the clunk you hear when you go into gear is the pump starting. Pull the pan and I think there will be shiney stuff. It doesn't take much, ( if you see it at all), it will need a clutch. High gear is direct lock up. At idle it should lock high if you short the solenoid and kill the engine.