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Dads Mechanic
Dads Mechanic, RV Body Repairer
Category: RV
Satisfied Customers: 202
Experience:  I was a rockwood camper dealer for many years from 1970 on many years Servicing motor coachs, rv's and motor homes.
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I am the proud owner of a 1990 Monaco Crown Royal Signature

Resolved Question:

I am the proud owner of a 1990 Monaco Crown Royal Signature Series Motorhome. It has a Cummins L10 and Allison 4 spd auto. I can't get it started because it is stuck in 'R'. (neutral safety switch?). Is there a way to manually shift it back to neutral, so I can start and run it until I can get it fixed. I think the shifter has failed. (Stone Barrett). I can here it click when shifting toward 'R' but silent when trying to shift to the other direction. I have checked wiring from toggle up front by switching wires on the toggle. Any help greatly appreciated.
Thanks, Jeff
Submitted: 1 year ago.
Category: RV
Expert:  Dads Mechanic replied 1 year ago.

Dads Mechanic :

Hi I guess your not having a good day. Are you capable off getting under the coach?

Dads Mechanic :

are you there?

Customer:

I'm back

Customer:

I don't like going under it. I can access through bedroom.

Dads Mechanic :

your transmission cable or electronic controled?

Customer:

electronic

Dads Mechanic :

not cable operated.

Dads Mechanic :

you have a push button control

Customer:

I don't believe so. It shifts from a toggle up front. It's a 40' mh. I can hear it clicking.

Customer:

Single pole double throw momentary toggle

Customer:

If I can locate the shifting mechanism on the transmission, do you know difficulty of removal? Can I shift transmission manually when removed?

Dads Mechanic :

do you know what allison transmission you have in the coach?

Customer:

I don't know the model number offhand. It is a 4 spd auto mated to a cummins L10. Probably the only one used by Monaco in 1990. It is probably a heavy duty rated trans if there are different ones, Monaco did that. It is a 35,000 lb motorhome. Sorry I can't do better, I maybe can identify it but it will take a few minutes.

Customer:

I'll go out and try to identify. Back in a few. Be patient, I will return.

Customer:

mt/mtb 647 or 648 with stone bennent shifter, not barrett

Dads Mechanic :

looks like it may be a MT643

Dads Mechanic :

well all the mt's that i looked at were all manual shifts, s my n

Dads Mechanic :

best guess is that you have an after market type shifter. can you see the rright side of the transmission?

Dads Mechanic :

sorry left side drivers side

Customer:

Stone Bennent LA2-12 electronic shifter. I think maybe air actuated.

Dads Mechanic :

http://www.ebay.com/itm/Allison-Transmission-MT654CR-/121129888557?pt=Other_Vehicle_Parts... this a for sale on ebay if you look at the second photo on the side of the trans you will see the shifter you may be able to move it manually here. Jim!!!

Customer:

10-4 I think the pic shows a manual cable, but the lever should be easy to find. TY

Dads Mechanic :

let me know if this works for you, Time for bed now. Talk to you later. Jim!!! Thanks for coming to Just answers.

Dads Mechanic :

http://www.stonebennett.com/Sb/Distributors.html

Dads Mechanic, RV Body Repairer
Category: RV
Satisfied Customers: 202
Experience: I was a rockwood camper dealer for many years from 1970 on many years Servicing motor coachs, rv's and motor homes.
Dads Mechanic and 5 other RV Specialists are ready to help you
Expert:  Dads Mechanic replied 1 year ago.
Hi Jeff!
I hope I have helped to resolve your problem. I am checking to see if I can assist with any thing else today, or clarify my answer to you.
Thanks for using Just Answers.
Dads Mechanic.
Jim

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