One of our members described the hydraulic layout of a rear-mounted knuckle crane on a truck, which was giving trouble, as follows:
“The pump is a bent axis Muncie pump 20 GPM, 4300 PSI. The pressure line is 3/4″ hose and steel tube. The pump intake line is a 2″ suction hose from the tank located on the crane base … Read more
The charge pump on a closed-circuit, hydrostatic transmission has a number of important functions. These include:
1. Replenish fluid lost from the transmission circuit due to volumetric inefficiency of the pump and motor.
2. Replace fluid purged from the circuit via the hot-oil flushing valve (where fitted).
3. Supply make-up fluid to compensate for load-induced oil compression and conductor (pipe/hose) … Read more
When designing and constructing a hydraulic tank there are a lot of things to consider. One of them is to ensure an air-sucking vortex, like that you see when water goes down a drain, can not develop at the pump intake line penetration. Doing the following will ensure that it doesn’t:
–Locate the intake penetration at least five times its … Read more