CAT 299D. I am replacing the track rollers and one rear idler. When I removed them I noticed some had spacing washers attached through the bolt on the inside of the frame. What is the criteria for using the washers? The manual says something about +- 1, but 1 what?
What the manual is saying is that you should try to use the same amount of washers between the track frame and the roller (or idler) at each end of the shaft when installing. You are aiming for a maximum of 1mm of gap after installing the washers (the "mm" was missed in the text). If you have not taken up all the gap then you are permitted to add one additional washer at one end or at the other to fill it. You are permitted to use up to 3 washers at each end of each roller or idler shaft. Note: Install washers as required to minimize the total gap to less than 1 [mm] between the roller/idler shaft and the roller frame assembly opening. Center the roller/idler in the frame assembly by installing the same number of washers between each end of the roller/idler shaft and the frame assembly +/- 1 of total washer thickness. Maximum of 3 total washer thickness per end. 2 locations (at each of 1 roller and 1 idler).
That makes sense. So the mechanic that installed 3 washers on one side of idler and 0 on the other side didnt know what they were doing?
It would appear not, or that they couldn't read ...............