Fluid Power Journal

Figure It Out: Relocating HPU Causes Start-up Problem

New Problem Relocating HPU Causes Start-up Problem By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial …

Figure It Out: Cargo Ship’s Cylinders Drifted

New Problem Cargo Ship’s Cylinders Drifted By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial Training. …

Figure It Out: Extractor Motor Reverse Speed Rises to an Unexpected Creep

By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial Training A hydraulic system drives a vertical ball screw …

Figure It Out: Deep Pan Forming Press Loses Operating Pressure

By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial Training A manufacturer of cooking pots and pans had a …

Figure It Out: Hydraulic Motor Slows as Accumulator Discharges

By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial Training A new system was required to run a hydraulic …

Shaft Seal Failed on New Pump

In the basement of a paper mill, a hydraulic power unit supplies all the flow and pressure needed to run one section of the mill. This section applies pressure …

Emergency System Fails to Close Safety Doors

A local repair shop was asked to troubleshoot a problem on the hydraulic system that closes a watertight door on a floating casino. The circuit was designed …

Figure It Out: Drifting Cylinder in a Rolling Mill

By Robert Sheaf, CFPAI/AJPP, CFPE, CFPS, CFPECS, CFPMT, CFPMIP, CFPMMH, CFPMIH, CFPMM, CFC Industrial Training A local repair shop was asked to troubleshoot a …

Valve Flaw Leads to Faulty Pressures

The circuit below was working for several years when the pressure-reducing valve on the clamp cylinder started leaking oil into an assembly bolt cavity. It …

Regenerative Circuit Drops Out

A specialty machine builder was having problems getting a vertical cylinder with a regenerative circuit to lift a hinged member. When the hinged member was …