tomv
New Member
Many small excavators are equipped with a second (medium pressure) aux circuit which has its own pump. Can this serve as a case drain? I think it depends whether the medium pressure system has its own filter. Can anyone say? I'd be curious to know this for a Cat 312, Doosan DX140, and a Komatsu PC138. (Assume recent versions of each.)
For the curious, here is the backstory: A while ago I floated the idea of leasing an excavator to use with an attachment that required a case drain. All the rental agencies around here were receptive and figured adding the case drain would be in the hundreds of dollars. On closer inspection, that number has gone up to a couple thousand. Seems high, but that's something else.
For the curious, here is the backstory: A while ago I floated the idea of leasing an excavator to use with an attachment that required a case drain. All the rental agencies around here were receptive and figured adding the case drain would be in the hundreds of dollars. On closer inspection, that number has gone up to a couple thousand. Seems high, but that's something else.