Bedroom slide breaking shear pins

dougrainer wrote:
This is what I posted to you on a private message. Doug
There are 2 types. A Shear PIN and a Shear BOLT. BOTH have to be hardened steel. The Bolt has to have a non threaded shaft that engages the motor shaft and gear. The Shear PIN, must be steel with the strength to handle the force of the drive. If they use standard Pins, they will shear off. The design is, when the room is fully extended or retracted, the Shear Pin will handle the stress. But, yes, it is best to monitor your operation and STOP the second the room is fully extended or retracted. Does your motor/trans assbly make the Ratchet noise when fully extended or retracted?
Now, I don't understand why some seem to insist that the controller has some type of limit. Some do and some DON'T. The ones that do usually have an adjustment POT on the board with an access hole to adjust it. MOST slide rooms have either a Mechanical STOP or a Rachet clutch in the Motor/Transmission to keep from over torqueing the system and shearing off pins and bolts. Another thing that shears bolts and pins is, if you have ANY slop when installing the bolt or shear pin, that will cause a Shear action to cut the pin/bolt. Can you post a pic of the Motor/drive where the shear pin is located? Doug

I have tried two types of pins from the dealer. Roll style and solid. I had a piece of the one that came out and they matched them. The original was a roll type. Both types have failed.
There is no ratchet sound. My dads 5th wheel does that when he puts the slide out.
My MH slides have always just stopped when fully in or out. I have never had to baby them in or out. As soon as I hear them seal I let go of the switches.
So far we have found no mechanical stop. The MH is level when we have installed the pins.
The pin that shears is to the right of the motor. There is a black steel shield covering the gear. I have to unbolt the motor and cover from the rail and slide it out of the gear to see the pin. There is a second pin on the far left shaft, that shears as well. There is another pin right at the gear that has never sheared. I can get a picture of the motor placement but would have to unbolt everything to get one of the actual pin.
I will try and find a picture of it in my documentation.
It really seemed that prior to this the motor stops on its own as soon as the slide seal seat. My other 2 slides seem to do the same thing.
Thanks Doug.