[Tf175]

I'm not sure how your coach is set up, does the generator slide out by air?  If so, Steve is spot on, remove the bolt holding the ram.

I have found the best method for removing front mounted generators is to use a pallet jack and cribbing.  I find it unusual that the limiting stop cannot be defeated by a bolt on bracket somewhere.  At the time of coach build, the set would have to have been inserted in the track and then the stop welded on, not consistent with Newell thinking i've seen.  nevertheless, you'll have to disconnect fuel, AC lines, battery cables, & control umbilical.  

It is also unusual for the set to start back up after 45 min unless it overheated during it's laboring period and your gauge isn't displaying correctly.  I'm also wondering how you know when to change oil without a running time meter?

If you're not comfortable with sliding the whole set out, the  brushes and slip ring can be accessed by removing the cooling fan.  It's difficult for an old fat guy like me but a limber young dude shouldn't have any problem.  Search the generator threads for more information on this subject.

I  went in via cooling fan hole and got to the brushes , etc . One of the slip rings looks good,  the other is black . Brushes are not damaged , short length is about 3/8 . I still need to remove brush holder . The springs fell out and look different to any I have seen before . Almost think they are broken . I have the Kohler manual but it doesn't have brush specs or any pictures.  I'm probably going to pull the generator out to get better access .
Thanks for the input .
Chris