Farm Pro 2420 starting issue

[parksfamilyranch]

So reading through these forums I was able to diagnose a fuel issue last week and replaced sediment bowl etc. Tractor started up just fine this morning and have been working it for a couple hours.

Well again the tractor died like it was choking for fuel so I went through and checked for bugs and cleaned out sediment bowl.

Now I try to start and sounds like the starter is just spinning. I'm attaching a video and I'm sorry I'm no mechanic but can I get guidance on what may be happening please.

 

[parksfamilyranch]

Well I was going to attach a video but cant figure out how lol.

 

[parksfamilyranch]

 

[TimP82]

I would start by pulling the starter from the tractor, clamping it in a vise and then bench testing it with a power source. While activating the starter, you will want to see the starter drive coming our of the solenoid and then spinning the starter gear. Of course the whole time be looking for stripped teeth on the starter and the flywheel. Best of luck!

 

[RonMar]

Yep, pull the starter... sounds like the starter gear is not sliding forward and engaging the ring gear. The solenoid pulls on a lever that slides the gear to engage the flywheel. If this lever has been disconnected or the pivot bolt has shifted the gear might not move far enough...

 

[parksfamilyranch]

Alright got the starter off finally, Chinese assemblers dont make it easy.

Looked at the flywheel and doesnt look to bad.

Bench tested starter and gear come on out but don't spin. Hit it with some PB to see if it was gunked up waited a few and tested again same result. I'll attach what photos I can and video ....

 

[parksfamilyranch]

Ok fixed my ignorance of not testing correctly. Retested starter the gear comes out and spins.

 

[parksfamilyranch]

Starter turns as it should I believe, I took a pry bar and fly wheel turns. None of the teeth look tore up.

 

[parksfamilyranch]

Well here we are working on a Sunday, so I tested the starter correctly and the gears popped out and spun.

After talking to some old farmers and a diesel mechanic that does a lot of tractor work for the farmers out here. He said the starter could have been gunked up and just needed a good blast of PB or the solenoid might not be working and spinning properly when the starter is under strain, like when it engages the flywheel.

Now I checked the teeth on the flywheel and they don’t look bad and I also turned the flywheel. There was good compression and I could feel it turning the pistons. So thankfully its probably not something worse but something wrong in the starter itself.

I am going to go ahead and order a new starter and see what that does, so I can get back to the fuel choking out issue.

I have uploaded some videos and pictures. Hopefully it will help someone else in the future.

 

[RonMar]

While you have it off, Take the end off of the starter(opposite the gear end) and clean the carbon out of the brushes and off of the commutator where the brushes transfer current to the rotor. Shorted/messed up brushes, and or a weak connection to the starter could also cause stuttering/chattering. Voltage is good, you turn key to start, solenoid tries to engage, short or bad connection causes voltage drop, solenoid disengages, voltge surges, solenoid re-engages, repeat...

 

[parksfamilyranch]

 

[parksfamilyranch]

This was shared on another forum so I am going to try it out.

"watching your video shows the solenoid is working ok, the bendix drive is extending and the armature is spinning as it should, now there is one more test you can do before you spend your money on a new starter and that is to lock the starter in a good vice and hook up the power cables and spin the starter, -- and with a piece of hardwood about 2x2 size, load up the bendix drive teeth with the wood, there is a one way clutch in the bendix that allows the armature to not over spin when the engine fires up, by loading the bendix, this tests the one way clutch to see if the clutch is holding, after time, they do slip.

If the bendix clutch is slipping, then the bendix can be replaced instead of the whole starter motor."

 

[parksfamilyranch]

While you have it off, Take the end off of the starter(opposite the gear end) and clean the carbon out of the brushes and off of the commutator where the brushes transfer current to the rotor. Shorted/messed up brushes, and or a weak connection to the starter could also cause stuttering/chattering. Voltage is good, you turn key to start, solenoid tries to engage, short or bad connection causes voltage drop, solenoid disengages, voltge surges, solenoid re-engages, repeat...

I will try that too thank you for the idea

 

[parksfamilyranch]

So I took it apart as advised cleaned every connection I could find, used a dang dremel wire wheel and shined all connections up. And here is new starter test.

Haven't tried testing with block of wood yet

 

[parksfamilyranch]

So before i forgot i wanted to share a few videos so future people can look and maybe it'll help them out with the starter. Take them with a grain of salt, tractor is in the field and I don't have a pretty shop lol.

Video 1 of 5

 

[parksfamilyranch]

Video 2 of 5

 

[parksfamilyranch]

Video 3 of 5

 

[parksfamilyranch]

Video 4 of 5

 

[parksfamilyranch]

Video 5 of 5

 

[jacques54]

On the video of the starter free spinning, the bendix clutch should extend all the way out and almost contact the end collar. You have an issue there, bad solenoid, bend or reversed fork solenoid.
To make this try spin, jump the small connection to the big nut where the battery cable go. This make the solenoid extend. If it is what you are already do, you are ok.
The starter motor itself sound good.