Hi
I'm assuming you are speaking about the hydraulics, we have completed four hydraulic pump failure analysis over the past 3 months, in all instanced the failure was fine hard particle ingress into the hydraulic system, one pump was repaired and the customer destroyed it again in only 137 hours, he managed to remove 2.5 mm (2500 µm)(100/1000th ") of bronze off the lens plate in 137 hrs., when we carefully investigated it was apparent the pressurised (1 Bar) reservoir breather filter was not good enough for the conditions.
This indicates the system particle count must be kept below an ISO 16/13 at all times, if the particle count exceeds this complete a Wear Debris Analysis to identify the contaminate as once identified you can decide if it should be removed, for example gelled lubricant will increase the particle count but not that important to removed immediately, crystalline silica contamination must be remove as silica type crystals are several times harder than the best metals man can make and will rapidly destroy the pump and other components in the system.
Our web site indicates the system we are speaking on, look for a similar lab in your area
Rob
www.rttech.com.au
