our hydraulic excavator resently started to off when it starts trecking or you start using the bucket to work.slow movement
Model: 320 cl
-Could you explain your situation a little more?Which side is not tracking correctly? (Sprockets to the rear and viewed from operator's seat.)Does this happen them same amount in both directions?What is the condition of the tracks and undercarriage?Are you asking about the controls slowing down while walking? This is normal, the machine cannot work and travel at the same time.OR are you saying the machine's engine is stalling or dies when traveling or trying to dig?Have you had any recent repairs or other problems?Please post the machine serial number, US machines do not use 3116 engines in 320's. Also, post the engine serial number. It is hard for me to find information some other markets. Japan machines are almost impossible to find the correct information.
GENERAL SLOW MOVEMENT OF THE HYDRAULIC EXCAVATORNEW UNDERCARRIAGEIT HAS NOT BEEN SLOW LIKE THAT IN THE PASS ANY THE LEVERS AND GENERAL FUNCTION IS SLOWENGINE 3066IF YOU CARRY THE BUCKET UP THE ENGINE WILL OFFIF YOU TRACK THE EXCAVATOR THE ENGINE WILL OFF
That engine is the same as I work on here. The most common issue I see is from plugged fuel lines or filters. A failed or stuck PRV solenoid can cause trouble as well. Place the machine in back-up mode to see if power level will change on the engine. A wiring problem should trip a fault warning on the dash. Light loads will not stall the engine. A heavy load can if PRV solenoid does not work or if fuel flow is restricted.Change fuel filters if you have not done so. If any trash is noticed in the water separator filter, disassemble the base of the separator filter assembly and clean out trapped debris in the bores. Disconnect the line from the fuel tank to the separator at both ends and blow out any possible trash inside the line. Check fuel flow from the tank. You should get a thick stream of fuel when the valve is open fully. If fuel does not flow freely from the tank, remove the tank and have it cleaned. The 3066 has a hidden screen inside the banjo fitting located on the transfer pump attached to the injection pump. It can be accessed from the bottom by removing the engine guard or from the top by removing the main control valve cover and the center firewall access behind the main control valve. The fitting with the screen is in the suction line fitting. The other line goes to the fuel filter. Remove the fitting bolt and then the screen will screw out of the bolt for cleaning. NOTE; if fuel supply hoses are old or soaked with oil, replace all of the hoses to prevent air entering the system. Check fuel flow through the hoses to the water separator filter by allowing fuel to flow from the tank through the water separator. This will make the fuel system easier to prime. Hand pump should pull out freely. If strong suction is noticed, fuel supply is restricted. Check the pinched or plugged hoses. If fuel supply to the engine is good the power should return to your engine. Please let me know what you find and if you need more help.
where is the position of the PRV SOLENOID . CAN HYDRAULIC PUMP CAUSE IT. WHAT ARE OTHER CAUSES OF THIS PROBLEM
ITEM #1 IS THE CONTROL HEAD FOR THE REAR PUMP, THE PRV SOLENOID IS INSTALLED AS SHOWN ABOVE. A HOSE CONNECTS THE REAR PUMP CONTROL HEAD TO THE FRONT PUMP CONTROL HEAD. IF THIS SOLENOID IS NOT WORKING, ENGINE WILL STOP WHEN UNDER LOAD. DISCONNECT IT TO SEE IF IT CHANGES PUMP OPERATION. IF IT DOES CHANGE PUMP OPERATION, IT IS WORKING. IF IT DOES NOT CHANGE OPERATION, CHECK POWER TO THE SOLENOID. IF IT HAS POWER, CHANGE SOLENOID. IF IT DOES NOT HAVE POWER HARNESS NEEDS REPAIR.
PUMP WOULD HAVE A SERIOUS PROBLEM IF IT IS ONLY THE PUMP. MUCH MORE LIKELY TO HAVE OTHER PROBLEMS BEFORE PUMP FAILURE. IF PUMP FAILURE IS A CONCERN, REPLACE ALL FILTERS AND CUT OPEN OLD FILTERS TO INSPECT THEM FOR METAL. IF METAL IS SEEN IN ANY FILTER, MAJOR FAILURE IS PRESENT AND ENTIRE HYDRAULIC SYSTEM MUST BE DISASSEMBLED AND CLEANED.
ENGINE POWER IS THE FIRST POWER PROBLEM, LOW FUEL PRESSURE OR LOW BOOST FROM BAD TURBO IS COMMON. WORN OUT FUEL SYSTEM CAN BE AN ISSUE IF POOR QUALITY OF FUEL IS USED. WORN OUT ENGINE IS POSSIBLE FOR MACHINE WITH HIGH HOURS.
PUMP PRV IS COMMON HYDRAULIC PROBLEM. WORN PUMP CONTROLLER HEADS IS POSSIBLE WITH HIGH HOURS. PUMP SETTINGS CAN BE AN ISSUE IF SOMEONE HAS BEEN TURNING SCREWS FOR NO REASON. THIS CNA ONLY BE CORRECTED BY SETTING FLOWS WITH SPECIAL TOOLING.