Mick-the-fitter
It’s what I do!
When hiring in attachments it would be good idea to take off the return line and run it into an empty can for a bit!X 2 on all of this, Mick, especially 3). Basically, anything with an epicyclic reduction, like finals in shovels, tracked machine finals, regular oil changes and good oils are a must. You’ll get an idea of the state of things from the colour, debris and smell of the oils. When phosphor bronze bushes start to wear there’s a real stink.Checking final levels between servicing isn’t a bad insurance policy. They can still wear, but hopefully you can catch them before total failure, which never happens in a convenient place.
Another thing is using hired in attachments is cross contamination from oil in the attachment. I hired in a breaker to go on a 10 tonner and within an hour the hydraulic oil in the sight glass had turned nearly black. Quick oil change probably saved a few problems there.
on our fleet after we’ve done a service we do a quick “pdI” including a full grease up. Soon shows whether the ops have been doing what they tick on the sheets.
Mechanical seals tend to give up when the rings get brittle or broken!