hi,my bucket movement is really slow when i try to dig but its ok when i load a truck.So i have a problem with the delay of closing the bucket.My machine is a Caterpillar 325B LN ME.I tried to replace the valve of the hydraulic controller but no use.Does anybody think that i must change a seal kit at the bucket cylinder?
Hydraulic problems are tough to figure out sometimes, but I believe you're right. It sounds like you have internal leaking in the cylinder. Because it shows up under load. Right now it looks like your only option is to tear down the bucket cylinder. If the piston looks good then you could probably get away with repacking it. But if you see scoring on the piston, then have it repaired before repacking. If not than the same problem will show up again real soon. Hope this helps.
The hydraulic pump supplies the pressurised oil to the control valves, which have solenoids on them that enable oil drift by way of them when vigor is applied, which depending on utility makes a hyd cylinder or hyd power motor operate. The handles on either facet of the operaters chair have micro switches inside them that energy the solenoids on the valves. The valve physique assemblys, or sandwich valves they're known as, are equipped to be pressure ajusted independently to make more or less movement to anything it operates. On the bottom of the valve theres a cover for the valve spool, the allen wrench becoming in the base is the pressure ajuster. However don't attempt to AJUST strain ON ANY a part of THE HYDRAULIC procedure with no TRIPLE pressure REG GAUGE. PRESSURES IN method EXCEED 3000 PSI AND IF INCORRECTLY AJUSTED would motive A strain factor TO FAIL AND damage OR KILL YOUR SELF OR any one ELSE
