Do I replace all the Transmission lines?

[johns4104s]

My MCI 9 has a Allisson 750 Transmission with very few miles. I purchased the bus 10 months ago. When I picked it up in Elkhart IN, we started it up, backed the coach up and then it stopped and would not go any futher. On checking we found a 2" hydraulic hose had slid of the house clamp. I replaced the whole line. The new line was a 2" vulcanised heavy duty rubber line. The old line was a 2" very thin plastic looking line. As this thin wall plastic line came off at the connection, should I replace all these plastic looking Lines?

Thanks

John

[grantgoold]

If you are concerned, think about the peace of mind that will come from replacing the lines? 500 hundred miles from nowhere and a line goes bad?
I replaced all of mine when one broke. Hoses are cheaper than transmissions
Good luck!

Grant

[johns4104s]

Grant, Thanks

I see large and small did you change all the lines? Who did you have build new ones?

John

[JackConrad]

     We had one of the transmission lines on our MC-8 start leaking near the fitting on the end of it. We removed all the lines and used them as "patterns" to have new lines made. We had a local big truck and heavy equipment place make the new lines using hydraulic hose and fittings (rated for 3000 PSI, transmission main line pressure usually runs about 175 PSI). We replaced 4 lines (2 transmission cooler lines and 2 external filter lines).  Jack

[grantgoold]

I did the exact same thing as Jack! We used the local hydraulic company. Inexpensive and realiable.

Good luck!

Grant

[buswarrior]

Some of the best preventive maintenance you can spend your time and money on is the soft bits, rubber and plastic hoses and lines. tranny, radiator, air,

Typically, the last commercial operator, or two, will have spent as little money on the coach maintenance as possible, and would not change anything until the failure point.

The decision to sell the coach would have been based on the accumulating deterioration of numerous pieces or a major failure, which would be rendering the coach unable to make money any longer in their under priced and under capitalized operation.

We busnuts typically must catch up all this accumulated deterioration in order to have a reliable and trustworthy steed.

happy coaching!
buswarrior