Just a quick question. I recently started to work on CAT haul trucks and have noticed that every time I check the steering accumulator pressures as part of our servicing procedure they are down from spec. So I top them up to exactly the spec with reference to the ambient temp but when they come back again they are down between 75-100 psi from spec. There is no apparent leak from the schraeder valves and the 7 trucks on site all seem to do this. Is this a common/normal occurrence?
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