Hi guy's,
Well with the help of that 2 year old thread I stripped the rear side of the tandem pump and found the brass disk to be heavily scored (0.001" deep), took over 3 hours to hone it all out and finished with a dead flat high polished finish. So this morning put everything back together and fired it up and with the wheels off ground it all works nicely. Put it on the ground and the right side tries to start but fails. There is no noise when going forward but when in full reverse there is a noise like fluid escaping internally.
Now when I first started it after putting it back together silly me didn't fully tighten one end cap on the direction servo and oil was leaking. Now if that piston has rings and seals shouldn't that stop oil from entering that void so could that mean the seal and rings are shot and thats where the leakage is.
When I did the original pressure test all I got from right front was 220 psi, now after that brass plate hone I got 350 psi but still not the 4000+psi thats supposed to be there.
So for my thinking it's either that direction spool seals or the drive pump, tomorrow I will route the hoses from the left side and see if the right side will drive to discount or prove the drive motor.
Any ideas or help with this will be appreciate as this proving one hard nut to crack.
Regards Bryan
Well with the help of that 2 year old thread I stripped the rear side of the tandem pump and found the brass disk to be heavily scored (0.001" deep), took over 3 hours to hone it all out and finished with a dead flat high polished finish. So this morning put everything back together and fired it up and with the wheels off ground it all works nicely. Put it on the ground and the right side tries to start but fails. There is no noise when going forward but when in full reverse there is a noise like fluid escaping internally.
Now when I first started it after putting it back together silly me didn't fully tighten one end cap on the direction servo and oil was leaking. Now if that piston has rings and seals shouldn't that stop oil from entering that void so could that mean the seal and rings are shot and thats where the leakage is.
When I did the original pressure test all I got from right front was 220 psi, now after that brass plate hone I got 350 psi but still not the 4000+psi thats supposed to be there.
So for my thinking it's either that direction spool seals or the drive pump, tomorrow I will route the hoses from the left side and see if the right side will drive to discount or prove the drive motor.
Any ideas or help with this will be appreciate as this proving one hard nut to crack.
Regards Bryan
case 1840 right side drive problems
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