8/18/2026 10:08 AM
I'm currently working on a Toro reel master 3555-D, model #03820
this machine is having issues with the front left-hand cutting unit(#4) dropping significantly slower than the other 4
i have rebuilt the cylinder twice ( preforming piston bypass tests each time) swapped the left and right cylinders to make sure the problem is isolated to only the left hand side( it is), swapped the hoses to make sure the internals of the hoses were good, installed new cartridge valve for solenoid#1, checked to see if the correct pressures are coming out of the pump(2000psi), confirmed all solenoids were in working condition and ohm out to the speciation in the book, checked the relief valve pressures are correct for the lift manifold assembly.
Any input on this matter would be greatly appreciated, I've posted the link to the hydraulic schematic below that came in the service manual
https://www.manualslib.com/manual/3866692/Toro-Reelmaster-3555-D.html?page=326#manual