Thread: AndyMark shifter Dog Gear screw problem - lower your pressures
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Unread 30-03-2011, 20:11
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Re: AndyMark shifter Dog Gear screw problem - lower your pressures
To allow the shifter to work more smoothly and reliably at lower pressures (and just in general):

What I have always found with the AM shifters is that you need to leave the cylinder somewhat loose/floating in the mounting. In other words, do not completely tighten the nut holding the cylinder to the mounting plate. What this does is allow the cylinder to easily adjust to any slight misaligment of the dog shifting shaft and the cylinder and mounting holes.

Use threadlocking lock-tite to hold the nut in place. Tighten the nut all the way and then back off about a 1/4 turn to allow everything to float and align itself how it wants.

To fix the screw breakage problem more reliably (especially if you do not want to reduce the pressure):

Do not just replace the M2.5 screw with another screw. The threads on the screws inherently act as a stress concentrator. Instead, drill out the one side that is threaded with a 3/32 drill (use Anchor Lube to make this easy) and press in a roll pin.

Hope this helps.
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Warning: this reply is just an approximation of what I meant to convey - engineers cannot possibly use just written words to express what they are thinking.