5105 Won't Crank

redlevel said:

After $1350 that I could have put to good use somewhere else, the tractor is running again. 481 hours total on the meter. Very discouraging. The injector pump had to be replaced. Rebuilt JD unit with one-year warranty. Probably, there was just a bad switch inside the pump, but the shop manager said they were not allowed to go inside the pumps. Sounds fishy, but there it is.

Makes me want to go back to some 60s technology. I could replace an entire engine for that on an old Ford or MF from the 60s/70s.

I'm a very unhappy camper. I went to a low hour, major brand unit to avoid such crap as this. I sold two S&W revolvers to cover the cost. That hurts.

Click to expand...

That's not a good place to be...

Nonetheless, it's an easier pill to swallow if you can do some of the homework on your own and recognize where/what the mechanic is talking about.

That's where the Technical Repair Manual on CD or book comes in. A good, long-term investment! :thumbsup:

If it were me - I'd be looking at the part's breakdown for the injector pump. I agree; the idea that there's an electronic "switch" internal to the pump - doesn't ring very well with me, either. Especially, with that particular model of JD tractor. JD doesn't make too many "simpler" built tractor's than the 5105!

That's exactly how it's sold - solid, simple - economy model.

AKfish

my 5105 done the same thing yesterday but when i unpluged the heat sensor

at the thermostat it started.can you run the tractor ok till cold weather

without harming anything?also if you use a block heater in the winter,would you

need it then?

Thanks for the info.saved me time and money!!

I would replace it, the sensor is $31.24. Attached URL is how I found the price, if you do not already have the URL.

This is from the tech. manual "When coolant temperature is below 122 F, the solenoid valve is activated and opens the cold advance circuit" for STANADYNE fuel pump.

To me anything that makes it easier for the engine to start, helps protect the engine.

https://jdparts.deere.com/servlet/com.deere.u90.jdparts.view.servlets.partinfocontroller.PartDetails

thanks JD5210 for the reply.better safe than sorry.i sorta needed to use it

tomorrow but i can use my other tractor.i doubt the dealer will be open on

Memorial Day.when you said "below 122 F" that made a big difference i thought

it would be much cooler than that.

JD5210....I have a block he r LV150155 for my 2004 5105 John Deere tractor. Where do you install it...I was told on the left side? Below is a picture of the tractor with Erskine snowblower attached. Ed

Ed, I have attached a picture (from CTM125 manual) of where it goes and a picture of the plug. It is located on left top of the back of the engine. My required a 5/8 allen wrench to get it out, there is not a lot of room back there between the back of the engine and the firewall. Do not know if it helped, but I put penetrating oil on it for a few days prior to getting it out. It came out very easy.

Do you have the instructions the center picture on the back shows where it goes. If you do not have them let me and I will scan them in and e-mail them to you, if you will send me a private message as the scan maybe to big to post.

Do not try installing without the instructions. On the element twist it to the right til it stops, then twist it to left til it stops, then center it between the two stop points.

On the allen wrench, I found a 5/8s at the auto part store, but it was to go on a socket wrench, there was not enough to get it in. Hate to share this, but I had to put a small pipe wrench on the allen socket to get it out.

JD5210....I printed out the file where the plug goes. It apparently goes inside the side panel...See photo. Ed

Ed, yes, you will need to remove the left cowl and raise the hood as far as it goes.

Forgot I had this picture.