Cat d6r losing drive and after speed sensor locations

[tctractors]

Sorry which test port are you referring to at the back of the case? I’ve checked all the clutch pressure points and they all seem to be fine and then I have tested the transmission relief Vance at the rear and getting 50psi there and then 0 at L1

You need to read the posts and stop looking at the wrong things, right your picture of the brake control valve shows the valve knee deep in crap, you can hardly see the tops of the 2 pressure test ports, Nige sent you a CAT Test point and pressure chart showing to a degree all the test point locations, the steel feed pipe comes across the the top of the case and fits onto a 90 deg elbow, just below this elbow is the P or as we call it P1 test point, remove the back plate and you will see all the modulating control valves, they run the 5 clutches and they all have a test point, on the brake control you will find more valves hidden in the dirt, you might want to move the Park button on the diff steer control to find a bit of pressure, P is your main pressure, you need to see the correct value here testing at low and high idle, L 1 you need to keep away from as its not going to get you moving so just look in the back with the engine running at oil spraying every place as that is the lube, the drive from the transmission goes into the diff steer unit on the left hand side only, a long shaft takes the drive to the right hub, the steering unit is powered by a motor fed from the implement pump set and nothing to do with the transmission.

 

[Andrewk143]

Found the issue with this machine, ended up being the solenoid below the 2 solenoids I have pictured previously, it was welded to the shaft with all the rust and dirt in it, although when tested it was operational it mustn’t have had full movement, new one fitted and full pressure straight away, cheers for everyone’s help again.

 

[Nige]

Back to Tony’s point 2 weeks ago regarding all the dirt in the area of the solenoids. I hope you took the opportunity and gave the whole area a good cleaning while you were in there.?