Based on the info you found on the landing gear motor you have the correct replacement landing gear motor would be the # LC141893. Your design is very common and there are others that would work since it's very common so you could use the part # LC196308 as well. view full answer...
For your 2013 Keystone Montana Hickory 3100RL the best option for a hitch that has a 500 lb tongue weight capacity is the Curt Multi Fit Hitch part # C13704 which fits standard RV frame styles that are between 22 and 66 inches measured from outside to outside. view full answer...
The best option to lift your 2011 Keystone Montana 3100RL is not technically a lift kit, but what is called an over/under conversion kit, which is sometimes referred to as "flipping the axles." This kit going to give you the most clearance, raising your trailer approximately the same amount as your axle's diameter plus the height of the leaf spring pack (please keep in mind this conversion kit is for use with double-eye springs only).
Your 2011 Montana 3100 RL should have tandem 3" round... view full answer...