Good Morning Team Players,
I have a Mitsubishi MX45 excavator - about 5 ton. I purchased it through an importer - grey market machine - about three years ago. All filters were changed at that time and the Hydraulic Oil was meant to be changed as well. When I received the machine I saw the level of hydraulic oil was exactly the same - a little low - but filters had all been changed and motor oil had been changed for sure. So hydraulic oil tank when working in Summer heat - about 35 c - could not be touched by hand - very hot - tested another day with heat gun and had 55c plus. I just used the machine the other day to clear some trees from my bridge and clear a little river gravel - dipper had a hesitancy in it - could be anything. So rather than break down in the middle of the flood pan I took it back to the shed and decided to change the hydraulic filter just in case - starting the process of elimination. When I pulled the filter the oil was very thin - like water and had a smell of burning about it - like auto transmission oil that has a burnt smell about it but usually turns a bit dark when it has that high temperature use about it. This oil although thin is perfectly clean looking - just thin - and I checked it several times over with the smell and new hydraulic oil and it definitely does have a burned smell.
So I have to change out the oil. Do I flush with a flushing agent as reports say burning means varnish and deposits? I am timid about this as it has no leaks of any mention and I don't want to cause more problems than what I have. Equally I don't want to do half a job. What flushing procedure/product would you guys recommend? Cat took over Mitsu but wont supply any details on specs or cant.
I am thinking they did not change the hydraulic oil originally and it maybe the original hydraulic oil that has been in there since mid nineties when machine was made and with roughly 2500hrs on the machine.
Any experiences/advices greatly appreciated,
Regards, MX45.
I have a Mitsubishi MX45 excavator - about 5 ton. I purchased it through an importer - grey market machine - about three years ago. All filters were changed at that time and the Hydraulic Oil was meant to be changed as well. When I received the machine I saw the level of hydraulic oil was exactly the same - a little low - but filters had all been changed and motor oil had been changed for sure. So hydraulic oil tank when working in Summer heat - about 35 c - could not be touched by hand - very hot - tested another day with heat gun and had 55c plus. I just used the machine the other day to clear some trees from my bridge and clear a little river gravel - dipper had a hesitancy in it - could be anything. So rather than break down in the middle of the flood pan I took it back to the shed and decided to change the hydraulic filter just in case - starting the process of elimination. When I pulled the filter the oil was very thin - like water and had a smell of burning about it - like auto transmission oil that has a burnt smell about it but usually turns a bit dark when it has that high temperature use about it. This oil although thin is perfectly clean looking - just thin - and I checked it several times over with the smell and new hydraulic oil and it definitely does have a burned smell.
So I have to change out the oil. Do I flush with a flushing agent as reports say burning means varnish and deposits? I am timid about this as it has no leaks of any mention and I don't want to cause more problems than what I have. Equally I don't want to do half a job. What flushing procedure/product would you guys recommend? Cat took over Mitsu but wont supply any details on specs or cant.
I am thinking they did not change the hydraulic oil originally and it maybe the original hydraulic oil that has been in there since mid nineties when machine was made and with roughly 2500hrs on the machine.
Any experiences/advices greatly appreciated,
Regards, MX45.