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We found that we had a broken Shear Pin in our Thrust Nut. When we tried to replace it, we find that there is about a 1 inch difference between the hole on the whiffletree and the hole on the Thrust Nut. What would have caused this and how do we adjust the whiffletree so the holes match?

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  • mj2181 Nov 15, 2010

    I have read over the instructions, but I don't see where it gives me direction in lining the whiffletree hole with the thrust pin hole.

    It appears that the whiffle tree has been shifted to the rear of the casing by about an inch. When you put the thrust pin through the bearing plate, you can see the hole in the whiffletree. Can you adjust the whiffletree toward the thrust pin without pulling it loose? I don't want a bigger problem that we already have.


  • mj2181 Nov 17, 2010

    My husband had tried everything to move the whiffletree forward. He has broken down and taken it to a RV repairman. I just hope it will be finished before I need to leave to go camping next week.



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Why don't you put something in the hole to substitute for the shear pin and try to pull the shaft in the direction you need to line it up? It sounds like it could use the thrust nut to maintain the spacing to some degree.

Depending on the size of the shearpin hole you may be able to use rope or wire to form a loop and pull on the loop.

Posted on Nov 16, 2010

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Hello. I believe the step-by-step instructions at this link will answer your questions about what caused your problem and how to adjust the whiffletree so that it's hole lines up with the thrust nut to receive a new shear pin.


Posted on Nov 15, 2010

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