Bobby

1. #1Mark2502017-01-08 04:51

   what levers do you use that break the shear pins .the proper pins are designed to protect the control box gear train and usually only shear when overloaded. For instance an over tight circle adjustment can be a cause Mark

2. #2bobbyk2017-01-08 07:22

   Thanks for your reply Mark. It shears pins after using the center shift lever. Notice I said after and not during. For instance if I use the center shift today and park grader overnight and crank up next day the center shift starts moving on its on and shears pin when I touch center shift lever to disingage it. I disconnected drive shaft going to center shift and it still shears pins. It seems to me that eliminates anything being in a bind. I would appreciate any other thoughts you might have.

3. #3ovrszd2017-01-08 10:34

   Welcome to HEF. Hopefully someone can help with your problem. Suggestion, when starting a thread pay close attention to the thread title. It should directly focus on the question or problem. With your name as title many readers may not even look at the thread. Where a descriptive title might catch the attention of the member that has your answer.

4. #4Mark2502017-01-08 13:23

   Have you checked the oil level in the control box. the only way that shaft can move is if one of the cantering springs is broken on the control lever or the gears are binding up on the shaft ,you may need to pull the front of the box off and check it out Mark

5. #5bobbyk2017-01-08 14:25

   Motor Grader Thanks Mark. I had considered that something might be wrong on that particular shaft but haven't looked inside yet. Bobby

6. #6bobbyk2017-01-28 08:44

   . Mark, does Cat have a web site for 12F Grader that lists what weight oil to use in control box, transmission, etc?

7. #7Mark2502017-01-28 15:29
8. #8bobbyk2017-01-29 08:30

   Thanks Mark for the fluids list.