Problem starting mc8 w/ 8v71

[SeanM]

Where can I find the schematics for the mc8?

[buswarrior]

Schematics are in the Maintenance manual.

For manuals, they come up in the usual places, craigslist, ebay, kijiji, etc.

Also some specific bus oriented sites, can't remember them...

Happy coaching!
Buswarrior

[eagle19952]

That's definitely your shut off. Make absolutely sure that little air piston stays retracted when you are trying to start the coach.

Also, that lever it pushes on sometimes gets stiff so manually make sure it's pushed as close to the retracted air piston as possible.

What he said. ^

[SeanM]

Hello again. So I was able to obtain copies of the maintenance manual. From what I have read from others it's important to find the diagram of your unit number. All the unit numbers in manual at 30*** to say 31***. Now on my ID plate it says unit number is T57-672 and serial #1395. How do I tell what diagram to use.

On another not that leak I discovered is from this devise which appears to be made with the pin hole through it. Has an inner piston that goes up and down I'm assuming with the flow of air. So this might not be my problem after all.
I tried to fill the emergency air brake tank. It filled was able to apply breaks. Then hooked up air to back of bus to fill rest of system but nothing. Could hear air going into the tanks but that's all that happened. Went to the. Recheck the air breaks and it had drained. 😤.  Any thoughts? 🤔