Rtlo 18913a. Sometimes I have a problem switching gears from high to low (not the side red button splitter, the black high/low one). Already changed the valve on the side and little filter in the back. Changed the shifter knob also.
I assume something is not right inside the transmission. What exactly can be broken in there? Should I even bother trying to find the problem, or would it be just better to get a new reman?
13 speed splitter, trouble switching gears from high to low.
Discussion in 'Trucks [ Eighteen Wheelers ]' started by DUNE-T, Sep 16, 2021.
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What KIND of problem? I had a delay in the black switch made it hard going into low and slow going into high, that was oil in the valve on the rear, changing filter wont neccessarily fix the valve not working smoothly if its gummed up
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Oddly enough I have a issue when I first start out and transmission is cold . Unless I bring rpm up higher to switch from low to high it grinds. After 5 minutes it never does it again all day. I’m curious about that filter idea
Brettj3876 Thanks this. -
Sounds like the range shift piston is hanging up. The o-rings dry up and deteriorate and cause them to be slow. You can get a kit (eaton fuller pn K-2809) for 90 bucks on ebay
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Magoo1968 Thanks this.
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jamespmack and Magoo1968 Thank this.
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Life was good for about a month. Then it would leave in the morning and run a few hours to unload and not shift back to low range. Could find nothing wrong. Tried to order the proper shuttle piston and seals for the cover behind the range piston. Found that was discontinued and had to buy a different, superseded, rear cover - valve assembly. Problem solved.
Do not know if that is your deal but look into that before you spend a lot of money.DUNE-T Thanks this. -
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