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Fishfarmer

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    Hello all, I have just bought a Kubota M4500DT. I have browsed this forum and found some answers, thank you all. Special thanks to JohnDB who has helped me with manuals and diagrams. The engine was a nightmare to fire up. White smoke and running very rough until it eventually fired and once it was warm it started straight away. I read these are renowned for hard starting, ( this may help others) so I went through everything, figuring there is bad glow plugs for white smoke unburnt fuel, well they all tested individually for resistance okay, took two out and put them to the battery and they glowed nice and hot. I have a more modern Kubota excavator KX 161-3 and the glow shows on the key switch, wait a few seconds turn key and and fires. Well this is my first tractor and I have been turning the handle left for the glow but not looking for long because i thought the glow wire was an indicator which wasnt working and not part of the actual start circuit.
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    Fishfarmer
    It tries to fire but takes so long to get running, so I read turn the knob for a minute or more. Finally got the wiring circuit diagram and here is to my embarrasment ( I am a last century electrician so I should know better) There is no power to the glow plugs at all. Dumb as, thinking there must be power to some plugs for it to fire. Turns out I have been firing it without any glow plugs with power to them at all. I ripped the dash out and and sure enough the wire was pulled out from the start switch to the glow wire. A quick glow now and bang she starts straight up. I dont think this tractor has ever been serviced I have never seen anything as negelected, with a bit of luck I may be able to save it. ( continued)
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    Fishfarmer
    Which brings me to my questions if anyone can help? Oil was as black as, including transmission so I changed everything. Some metal filings on the hydraulic magnet, grease like grey graphite, I assume is metal on the magnet and also some 5 to 10mm shavings. I will post a picture of these because they worrry me a bit. There is about half a dozen thin and a bit springy like a piece of feeler guage. My main problem is the 3 point linkage was working fine and after I have done the oil change using STOU 15w/40 the 3 point linkage stopped working.
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    Fishfarmer
    Now I took the Oil filter out to clean and also the canister from the hydraulic pump to clean any shavings. To be able to get the canister off I took the hydraulic steering connections off the pump. I am pretty sure I replaced the filter properly and all the orings on the hydraulic connections on the pump. Hydraulic steering is working fine. I hope there are no stupid questions but I read where hydraulics dont need to be bled? I have put about just under 45 litres of tranny oil in and its halfway up the dipstick so although I am not to the top I wouldnt think its low on oil, any ideas anyone?
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