A new client, a hydraulic repairer, consulted me about the failure of one of their piston pump rebuilds. The pump was not installed by them, but when the failed unit came back for inspection, it was obvious the drive coupling had been hammered onto the pump’s drive shaft.
(For the uninitiated, this is a really dumb thing to do. If … Read more
A very frustrated member sent me this recently:
“I have done all but beg the company I work for to buy a portable oil filtration caddy but I cant seem to get my point across to them. The company is a government contractor and everything is done on a cost basis at the moment. So it’s cheaper to mix oils … Read more
The most important proactive maintenance exercise you can do for a piece of hydraulic equipment is to define its temperature operating window (TOW) and then ensure the equipment always operates within this window.
Operating temperature is inversely related to oil viscosity. So if operating temperature is too high for the grade of oil being used in the hydraulic system, loss … Read more