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Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 4401
Experience:  17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
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I have a komatsu 200-7 serial number A87533 and it has 8500

Customer Question

I have a komatsu 200-7 serial number A87533 and it has 8500 hours on it and over the last few years the hydraulics have been getting jerkier for the first half hour of operation? Once the hydraulic oil is at 100 degrees it's completely gone. It's mainly in the lift and track drive. It's pretty bad when it's below freezing outside but when it's 70 degrees out its barely noticeable. It runs and functions great just jerky. I've changed all the filters and I've changed hydraulic oil and put in a TO-4 10wt CAT oil. I'm looking for any ideas? I haven't hooked up pressure gauges to the system yet but that's my next step.
Submitted: 9 months ago.
Category: Construction and Road Equipment
Expert:  Dan replied 9 months ago.

HiCustomer My name is***** will be glad to help. On most newer hydraulic systems they are recommending an AW46 rather than the prior AW32 always used to meet the higher demands of the more advanced systems today. Check your in tank return filter for signs of fine metal indicating a pump or component problem occurring. If clean then test your pressures and compare to specs. click on this link for this models specs. Let me know the results and if we need to dig deeper into this

http://kunisaki-jyuhan.jp/stocklist/Specifications/Excavators/PC200-7.pdf

Expert:  Dan replied 9 months ago.

Hi, Did you get this resolved?

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