Blowing tranny fluid all over.

[eagle19952]

Other hose is fine for now. Hose wore through at a retaining clamp. Silly design. I removed the clamp.

New hose is pretty:




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WOW...$50.00 a foot, that's thievery in the nth degreee..for low pressure 2wire    ...
OMg

[chessie4905]

We'll cross our fingers for you.

[windtrader]

Well, that is a hell of a hose. Reminds one a bus is NOT a car. lol

Glad you got going again Scott. Hope losing the 4 gals of transmission fluid did not damage the tranny.  It does make you wonder though if the seals or other internal parts got roughed up.

[chessie4905]

That may be an expensive hose, but it looks nice. Larger diameter fittings start to get costly. Big money in that business. Plus, imagine the inventory costs carrying all the different fittings, hoses in different pressure ratings in different sizes.......Good that he was able to get it right away.

[David Anderson]

Scott,

I had the same thing happen to me in 2010.  I was able to fix mine on the road and scoot home. 

http://www.busconversions.com/bbs/index.php?topic=17011.0


Glad you got it fixed

David

[luvrbus]

That may be an expensive hose, but it looks nice. Larger diameter fittings start to get costly. Big money in that business. Plus, imagine the inventory costs carrying all the different fittings, hoses in different pressure ratings in different sizes.......Good that he was able to get it right away.

Parker hose are expensive but good hoses not the cheap made in China stuff, my local hose shop offers me 3 different grades and Parker is always around 30% higher than the others and I go with Parker 

[chessie4905]

If it's a critical application, go with the best.

[Iceni John]

Scott,

I had the same thing happen to me in 2010.  I was able to fix mine on the road and scoot home.  

http://www.busconversions.com/bbs/index.php?topic=17011.0


Glad you got it fixed

David

And coincidentally last night, while I was under the bus staring up at nothing much in particular (I spend a lot of my life doing that), I saw a few hoses that crossed others which weren't secured to prevent movement.   So, a few zipties later I felt that I had done something useful with my life  -  zipties are cheaper than replacing worn-through and chafed hoses.   At this rate my bus will soon be more ziptie than bus.   Better safe than sorry.

Yup, good hose ain't cheap.   It's mostly Parker or Aeroquip for me, but I've also used some of Eaton's Seltex R4 hose made by SEL in Turkey that seems OK.   No Chinese hose for me.

John

[Iceni John]

Scott,

I had the same thing happen to me in 2010.  I was able to fix mine on the road and scoot home. 

http://www.busconversions.com/bbs/index.php?topic=17011.0


Glad you got it fixed

David

David, you mentioned in your original thread about adding a pressure warning switch to the tranny, to alert you to problems such as the leak you had.   Did you ever do this?   If so, where did you put it?   Don't HT740s have some spare ports that could, maybe, be used for this?   I like the idea of adding a low-pressure switch, but I don't know where would be best.

John

[luvrbus]

Low level in the pan is better the 740's will have pressure to the very end

[Scott & Heather]

No more leaks. Topped off fluid. Will drive coach 200 miles on Sunday....will report back.


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[chessie4905]

The Allison brochure mentions low fluid level sensors available for either a light or buzzer.

[buswarrior]

Transmission is going to tell you there has been a catastrophic leak, as Scott had, by reduced functionality. It either has juice and goes, or it doesn't.

The driver will find a seeping leak by circle check, dipstick check, puddle, mess in engine room and wearing tranny oil on the rear of the coach and toad.

If a warning device was critical to transmission destruction,  you'd have one already...

And, zip ties cut hoses. Use the proper rubber lined hose clamping hardware if there is motion present!!!

Happy coaching!
Buswarrior

[luvrbus]

Transmission is going to tell you there has been a catastrophic leak, as Scott had, by reduced functionality. It either has juice and goes, or it doesn't.

The driver will find a seeping leak by circle check, dipstick check, puddle, mess in engine room and wearing tranny oil on the rear of the coach and toad.

If a warning device was critical to transmission destruction,  you'd have one already...

And, zip ties cut hoses. Use the proper rubber lined hose clamping hardware if there is motion present!!!

Happy coaching!
Buswarrior

A temperature gauge on the transmission will tell you,when a Allison get out of it's safety zone from being low of fluid the gauge will climb

[buswarrior]

Yes, tranny temp is a worthy busnut item.

Some coaches have poor tranny cooling, degraded heat exchangers, previous owners obstructive parts changing, etc.

Cool tranny lives a long life,hot tranny lives a shorter life.

Again, I would hope a busnut discovers and manages a seeping transmission via engaged visual inspection, long before any mechanical measuring device indicates a problem.

A burst leak, to the side of the road you will go, lack of forward motion happening concurrent with any accessory warning devices alerting the driver.

Happy coaching!
Buswarrior