Trojan 2500 trans problem

[josh rawlings]

Hello

I have a Trojan 2500 series with a 4 speed clark powershift transmission
While using it I suddenly lost reverse gear
The strange thing is now when I shift into forward I have forward, when I shift into where neutral was I have forward also , when I shift into reverse it is in neutral
The shift lever will not move down any farther. The neutral safety switch will allow it start while in the forward position which was neutral position before.
The shift linkage is tight and adjusted right
With the linkage removed and the spool valve moved manually gets the same results as above
Transmission pressure shown on the dash is normal
Any help would be appreciated

Thanks

 

[steve wherley]

trans psi good in gear?

 

[steve wherley]

trans psi good in gear?

 

[josh rawlings]

380 psi at start up after shifting into forward and reverse dropped to 250 psi and would not go up
after that, same pressure in neutral
I replaced the forward / reverse spool valve assy with no change