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  1. Dave_eng

    White Plug in Cab of L5030

    If one wire is yellow with black stripe and the other solid black, best guess from looking at cabin wiring is a window defroster. Some cabins have rear and both sides with electric wires in the glass. This may be the way a delux cab is set up. Dave
  2. Dave_eng

    Hard starting

    You should provide some weather info with a post like yours. Your could be in Florida or Alaska and the answers you get need the weather info. First, as a caution never use quick start. It just needs to be said to new comers. The engine should always start without much cranking. Do you have a...
  3. Dave_eng

    Starter not engaging

    Ja Jay This may be of help for you. There is no starter relay so any resistance in the safety switch is going to affect the current reaching the starter solenoid pull in coil. Dave
  4. Dave_eng

    cracked transmission housing

    When faced with a crack in a casting it is worth considering Lock-N-Stitch Lock N Stitch Here is a youtube video: Video Dave
  5. Dave_eng

    2021 3310 Error code P3001?

    Here is the P3001 page from the code manual. Note how the tractor, once this condition is detected, goes into Limp Home mode which then makes you think all sorts of other issues are happening. Dave
  6. Dave_eng

    Kubota Boneyard

    Forum member 007kubotaguy parts out older series L's. Use the envelope symbol at the top right corner of most forum pages to send him a private message. Dave
  7. Dave_eng

    M7040 injection pump return check valve

    In my area a major storm is coming and because my wife is very ill, I was readying the M7040 and blower so I could keep our lane open for medical supplies or an ambulance. I backed the tractor out of its storage location and was getting ready to drive it into my heated work shop. When I got out...
  8. Dave_eng

    Kubota Tractor with a cab heater problem

    There are many variations of the M9000. I found an illustration of one unit where the heater valve is in the ceiling and controlled by a cable. Heater systems with the core in the roof space will be very sensitive to low coolant levels. Try and find the supply and return heater hoses and feel...
  9. Dave_eng

    M7060 error-12

    Operators' manual has this statement: I would be checking more closely for pulled off or damaged wires. I provide the following page from the WSM not to get you checking hydraulic pressures but rather to know where to look for pulled apart or damaged wires. Dave
  10. Dave_eng

    M5030 running on 2 cylinders

    Check for strong fuel delivery to injection pump. Plugged fuel tank outlet, plugged filter fittings. Study attached pages. Note return line from injectors to tank. This is a good way to assess if adequate fuel is being supplied to injection pump. Rarely necessary to mess with injection pump and...
  11. Dave_eng

    FEL Hydraulic Issue

    Open and reset any quick couplers in the FEL system. Because hydraulic cylinders can push harder than they can pull, a coupler not allowing full flow can produce weird symptoms. The front hydraulic block which feeds the FEL has a screw which must be in the correct orientation. Just double check...
  12. Dave_eng

    Loud Thumping Noise when Trying to Start

    You make no mention of the operation of the glow plugs. Safety switches do not make noise. Check that glow plugs are all heating. Then check as per above from wsm. Dave
  13. Dave_eng

    What damage can repeated Jump Starting cause?

    The other system which is likely not being operated as designed with this dedicated switch is the glow plug's circuit. The key switch logic diagram shows the GP's powered during engine cranking. Not powering GP's during cranking will make starting much more prolonged during cold weather. Dave
  14. Dave_eng

    Drainage on trail

    I have had excellent success using a geo grid. Below the geo grid install high quality geo textile on level grade and then expand 4" thick geo grid on top. Fill geogrid cells with granulars. Geo grid Lots of youtube videos on the engineering and do it yourself installation. youtube Water moves...
  15. Dave_eng

    B3200 starting problem

    Here is the starting circuit wiring schematic There is a lot of material to study. As you go thru it ask questions. Dave
  16. Dave_eng

    Work Shop Manuals (WSM)

    As a starting point tell me which is the most important section of the wsm to you. I will then send you a couple of pages of that section and you can decide if the quality of the material I have is good enough. Even Kubota's main library does not have great manuals for older models. Dave
  17. Dave_eng

    What damage can repeated Jump Starting cause?

    A few years ago a friend of my son in his late 30's, races Formula Fords so no dummy, had his daily driver car in my shop. He had bypasses the clutch safety switch on his VW thinking he did not need it. I was standing in front of his car and he reached in to turn the engine over. Car was in...
  18. Dave_eng

    L4701

    You need to ensure solid delivery of fuel thru the filter and into the injection pump. Remove whatever connection you can open between the filter and the injection pump, turn on the key and hope to see a steady stream of fuel. If the stream is weak or sporadic, you need to work you way back to...
  19. Dave_eng

    Grand L5030 will not start using the key

    The dash panel, aka :Intellipanel has brains. If the engine is not cranking for a reason the intellipanel can sense it should be providing a message on the display. Here is a snapshot of part of a page of the WSM. I have attached the wiring diagram page for the HST starting system. Here is...
  20. Dave_eng

    B7200 flashers not working

    See parts illustration for flasher location. Dave