odd problem with JD450j - Heavy Equipment Forums
2014年3月9日 · Make sure to relieve the air pressure in the hydrostatic oil tank and be prepared for oil to flow out of the hole when you pull the sensor. I'm pretty sure if you follow the wires you will find an extra 10" or so of wire bundled up with zipties. It's no fun changing them on a dozer with a ripper or winch.
450J Speed Control Not Working, Dozer won't move
2018年6月19日 · The engine cranks fine but after I try to turn the speed control knob, the engine will not speed up and won't move. The knob solenoid is receiving voltage and the resistance does change when the knob is turned. Does anyone know what's causing this? by TexasFarmer1984 » Tue Aug 07, 2018 6:16 pm.
Deere 450J intermittent throttle problem - Heavy Equipment Forums
2015年4月18日 · If the third digit of the diagnostic trouble code number is (T), it indicates a problem with B4 Transmission Speed In Grip (SIG). If the fourth digit of the diagnostic trouble code number is (0, 2, 3, or 5), a open circuit, shorted circuit, or no feed back is indicated.
John Deere 450J wont move - Heavy Equipment Forums
2024年3月26日 · We have a small bulldozer, s/n T0450JX139324, that we were using to clear fences with and the operator told me he had a problem. The dozer starts fine, but wont idle up, hence it wont move. Blade works fine. Error codes on dash screen: F423 and F9C3. The TCU also has codes flashing on it: RTOS and !APP
Common John Deere 450J Dozer Problems - Q&A | JustAnswer
I have a Deere 450J dozer serial 117776, I have an electrical issue and I can’t exactly find out where the problem is.
450 won't start - JDcrawlers Messageboard
2009年7月14日 · I have a 66 straight JD450 with a CDC Fuel injection pump that will not start. Here's the events. All this started one day when the dozer just stopped running as if it lost fuel. I got it started long enough to get to the house but if it was put under any load, it would stall, so I had to stay in low first gear to limp home.
JD 450 overheating problem - JDcrawlers Messageboard
2007年8月16日 · I can't figure out why this dozer keeps overheating and running up to 220 degrees (190 degrees seems normal). It got soo hot once that i had to replace the rings and head gasket (all else looks good). I replaced the thermostat with a 195 degree open, i cleaned out the radiator fins, flushed it, and added new JD antifreeze...the problem persists!
450 John Deere wont move | Yesterday's Tractors Forums
2023年11月20日 · Everything on the loader works and even the hydraulic remotes work but the dozer will not move. Any ideas of where to start. I checked filter in front of the radiator and the lower filter screen in the belly.
john deere 450j - Heavy Equipment Forums
2014年1月28日 · I have a JD 450J, and when i use it under heavy strain in temperatures over about 24c (75f), it over heats. this only seems to happen when i have the machine under heavy strain such as deep ripping hard ground (i have large single shank ripper attached to it), or pushing dirt at high speed to make fire breaks,
JOHN DEERE 450J DOZER: TROUBLESHOOTING COMMON PROBLEMS and ... - JustAnswer
Check the harness and connector pins for damage in the throttle control circuit. Look for any shorted or chafed wiring that would cause an open circuit or short in the harness. You can also do a continuity check on the harness to confirm this. Wayne.