| Author |
 Topic  |
|
|
dsalinas1939
Top Member
USA
1323 Posts |
 Posted - 02/20/2015 : 05:55:27 AM
|
| i have a 2010 vision when its cold and first started in the am thrans fluid leaks from the pressure vavle on top of trans or relief valve once it warmsup it stops but nmot completely still drips a little any ideas i dont have gauges to check pressures in trans maybe something is clogged in trans or is it possible that valve is stuck open or bad????? |
|
|
valleybusman
Top Member
USA
802 Posts |
Posted - 02/20/2015 : 07:52:37 AM
|
| I think your valve is the problem . I would take it out and clean it real good . try not screwing the stick into the tube so tight . Does it screw down type ? |
 |
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/20/2015 : 08:02:31 AM
|
i was gonna take the valva out and clean it but i cant tell how or if it comes out there is a cap on top that s
just spins i dont see a spot for a wrench the stick pushs on then u flip over the tap to lock it
|
|
|
|
krmvcs
Advanced Member
362 Posts |
Posted - 02/20/2015 : 09:28:12 AM
|
| i think the little "cap on top that just spins" that youre talking about is just the breather for the trans. its supposed to do that though you shouldnt have trans fluid leaking from there unless its been overfilled or you have some other internal trans issue. |
-Ken- |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/20/2015 : 10:27:56 AM
|
| yes i do believe its the breather when its cold at first start up ut pushes about half quART OUT i have had it running outside for bout an hour and its not pushing any out now gonna see what tomarrow morning the stick still shows its full so maybe it was over filled but will see tomarrow what else would make the fluid pump out the breather when its cold only |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/24/2015 : 05:30:50 AM
|
| does anyone have any ideas what could be causing the trans fluid to come out the breather only on cold start up it pushes a quart or so out once its warm its ok the leave was fine when i started it |
|
|
|
slippert
Top Member
USA
630 Posts |
Posted - 02/24/2015 : 06:19:01 AM
|
Allison has a TSI paper about this, if I can find it laying around, I may be able to post a link .... I will look for it... I know it was a tsi back in 06-07, but may help you...?
Basically Allison says to check your dipstick tube for proper venting, and if for some reason a 2012 was built with a non vented dipstick tube or dipstick vent hole is plugged or blocked off ,,What you are describing could happen on cold startup... first thing to ck is tube for proper venting, if that doesn't fix, then trans could have internal issues
My older busses with rubber locking dipsticks had an (approx)3/32 or less inch hole close to top of tube for vent,,, newer twist lock I am not sure where they vent thru ? I am looking at a tube for a 2009 IC an can't find a hole anywhere in it... but paper says you can add one if needed..
|
Edited by - slippert on 02/24/2015 08:45:10 AM |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/24/2015 : 07:58:57 AM
|
| so if i take out dipstick on cold start up and it does not leak then its probably a venting problem? |
|
|
|
slippert
Top Member
USA
630 Posts |
Posted - 02/24/2015 : 08:40:49 AM
|
quote:
Originally posted by dsalinas1939
so if i take out dipstick on cold start up and it does not leak then its probably a venting problem?
Yes sir! |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/25/2015 : 04:16:02 AM
|
| this morning i left the dipstick out and started bus let it run for a while and the leaks is much better but still left a dime size puddle where as before it was at least 4 in diameter |
|
|
|
slippert
Top Member
USA
630 Posts |
Posted - 02/25/2015 : 04:26:09 AM
|
Just a thought but maybe try it with dipstick pulled for a couple more days, see if quits? I am not sure if vent passage could hold residual oil and it might be just cleaning itself out today? sounds like it leaked a little less than before..
I am still looking for my TSI papers....
|
Edited by - slippert on 02/25/2015 04:34:44 AM |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/25/2015 : 04:38:21 AM
|
| ok sounds like a plan will run it a couple days and see what happens thanks |
|
|
|
slippert
Top Member
USA
630 Posts |
Posted - 02/25/2015 : 04:47:45 AM
|
quote:
Originally posted by dsalinas1939
ok sounds like a plan will run it a couple days and see what happens thanks
I found TSI my on computer, for some reason I can't seem to attach to forum?? (probably my lack of computer skills,lol) send your email addy to mine listed on my profile ... I know I can forward them to you that way if you would like to have it.. or if you have a good Allison dealer , I am sure they can set you up with info on tube venting issues.. |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/25/2015 : 1:56:19 PM
|
| thanks for the tsi letter it help greatly I am gonna start bus up in am with dipstick out to sea if it leaks if it doesn't I will drill hole in dipstick |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/26/2015 : 07:18:05 AM
|
| i started bus this morning with dipstick out and it did not leak at all so i am assuming that the vent hole is the problem i took dipstick tube out and its one piece the TSI letter shows it as two pieces and to drill hole where the two pieces met so not sure where to put hole does it matter other then when u service trans and add fluid it will come out the hole i drill |
|
|
|
slippert
Top Member
USA
630 Posts |
Posted - 02/27/2015 : 04:43:56 AM
|
| The diagram should be a one piece tube just has a break in picture for clarity... shows drilling hole at bottom approx 1"1/4 below rubber seal(so would be inside of trans housing) where tube installs in trans.... and one at other end of tube where diipstick plugs in... just follow directions and you should be good.. |
|
|
|
dsalinas1939
Top Member
USA
1323 Posts |
Posted - 02/27/2015 : 04:48:53 AM
|
| got drilled the holes and started up this morning and no leaks thanks but now its giving me another problem |
|
|
| |
Topic |
|
2010 vision trans leak
