What type motor are you referring to?
Is it the hydraulic pump motor?
What problem are you having?
The hydraulic pump motors usually last a long time and when they go, the usually flat quit. A new hydraulic pump motor seems to be running around $1,200 - a lot of $$ so you want to be sure it is the problem.
What year and model of Montana do you have?
That information plus a description of the problem(s) you are having will help get you helpful answers.
There us at least one motor rebuild service that members have found. I will try to find that information and post it here.
ON EDIT: Here is the link to the company that rebuilds the motors.
https://www.montanaowners.com/forums...ad.php?t=82928
P.S. Welcome to the MOC! I moved your Post into a new Thread as it is a different problem from the discussion where it was originally located..