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Eaton trans issue. 2002 peterbilt 379 eaton 18 speed rtlo
Truck hesitant sometimes to do range changes from high to low. Not the small plitter button. talking about the bigger paddle. Truck does not grind at all when its having issues. Sounds like its the range piston having issues. IF it does not complete the range change while in neutral, it will change the range the instant you touch a gear with the shifter. you can do this with the engine off as well. I was thinking to change out the range piston seals but the manual says you cant do this without removing auzilary section on this model trans for whatever reason. Local transmission shop told me its the synchros going out. I find this hard to believe because I get no grinding during range changes. … read more
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