Transmissions, stander, 10-13-15-18 speed eaton

This topic contains 4 replies and was last updated by jason-creed 12 years 6 months ago
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jason-creed
March 28th, 2009 11:08pm
Post
I am currently undergoing my 4th year apprenticeship traning for the HD mechanics, and at the moment I am re&reing a eaton 13speed standerd transmission RTO-9513, and I can't find anywhere in the manual cetern ansers to two questions, if people can help that would be sweet, or even if they point me in the right direction, so I can figure it out myself would be cool as well..lol



1) How do you mark the main transmission shafts to assure they are correctly timed?



2) Why do you need to time the shafts?



Now, for the first one, I think I have it, I think its a paint marker on two mating teeth of the gear, but Im not 100% which is why I am asking, and the second one, I just don't know, and I can't see it in the manual.



thanks to everyone that helps
shawn-rundle
March 29th, 2009 1:24am
YOU ARE RIGHT ON THE FIRST PART THE MAIN DRIVE GEAR IS MARKED WITH A PAINT MARKER ON EXACTLY 180 DEGREES APART COUNT THE NUMBER OF TEETH TO MAKE SURE THEY ARE ON OPPOSITE SIDES.THE REASON FOR THIS IS THE MAIN DRIVEN SHAFT IS BALANCED BETWEEN THE 2 COUNTER SHAFTS LOOK AT THE DESIGN OF THE DRIVEN SHAFT GEARS ALL THE GEARS HAVE NO BEARINGS AND SEEM TO FLOAT BETWEEN THE 2 COUNTER SHAFTS.TO MAKE SURE IT IS TIMED PROPERLY IT SHOULD GO TOGETHER FAIRLY EASY AND WITH THE BEARINGS IN PLACE SHOULD SPIN OVER WELL AND ALL SLIDING CLUTCHES SHOULD SLIDE IN AND OUT OF ALL GEARS EASY.IF THE BEARINGS WONT SEEM TO FIT AND THE MAIN SHAFT BINDS UP WHILE YOU TURN IT THERE IS A TIMING PROBLEM.
alan-demarre
January 4th, 2013 5:15am
I had rebuilt a 13 spd and learned the "fun" of timing the gears. Still dont quite get it . But when I had a problem I called the manufacturer and found out they had a tech support line. Very Helpful. They were able to break it down so i could understand what i was doing. Go to the roadranger website and explore , you will find the number of your areas rep. and they can guide you thru whatever it is you are doing .
jim-owen
January 4th, 2013 5:46am
Used gears running on different surfaces will cause a whining noise, plus they are very likely to create a balance problem. When assembling the transmission you will likely have a problem even rotating the shafts over by hand. They just refuse to turn.
daniel-figueiredo
January 21st, 2013 4:53am
when i was in college, my drivetrains teacher had us overhauling an eaton 10 speed manual transmission. I remember him telling the class when putting the mainshaft, we had to make sure that the timing marks are lined. So that the mainshaft and countershaft rotate freely. If the timing marks are off the main shaft and countershafts do not rotate as if they are seized in place.

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