pto will not engage ls xr4145hc 26 hours

[deer assassin]

I got 26 hours on her 15 bush hogging to day 3 hours in very light grassy field 24 inches maybe the pto just dies



blown fuse

put one in pto kick on s 3 sec later blown fuse

instead of 15 put a 20 and 30 in same thing pto cuts on runs for a few seconds and dies



all wiring looks good i suspect bad coil

dont care to take it 150 miles one way for warranty ( may have to )

I may get them to send me coil and i can put it on

i reckon the coil is dead shorting ? but i am no electrician

any one know the ohms specs for the coil


thanks for any and all help

 

[Spanner]

I'm not familiar with this LS brand of tractor but:

With any electrical problem, Putting increasingly larger fuses into a faulty circuit is pure folly. The blown fuse is a warning to tell you something is wrong. Fix the problem. :irked:

If you can get to the PTO Solenoid you should be able to disconnect it at the connector itself.

Now if you engage the PTO switch (with no solenoid connected) observe the 15A fuse (because you have now refitted a correctly rated fuse - Yes?) and if the fuse doesn't blow your fault is beyond the connector.
IF the fuse does blow with the solenoid disconnected your fault is in the power side of the circuit (No current is going back up the ground wire) in the loom.

That would be my start in the fault diagnosis anyway. It may save you having to buy a coil...

Again, I know nothing about LS Tractors. Maybe just get even bigger fuses until one works? :banghead:

 

[deer assassin]

i am not going to use bigger fuses and burn the thing up there is an issue i just tried that in the field to finish a job

 

[deer assassin]

i will try that in the am


who ever design it ought to be whipped the coil comes off easy except metal hyd line in the way

 

[Spanner]

Well I've given you a clue on how to, at least, isolate the fault. No need to remove the coil at this stage, Just disconnect it. Good Luck.

 

[deer assassin]

thanks for the help from the land down under

you are correct

i could take it so i walked out to shop disconnected the harness at solenoid

15 amp fuse in fired up ole blue

turned pto switch on pop

i heard fuse go

so solenoid is not bad

now what i guess it will have to go for warranty or could the switch be bad ?

 

[deer assassin]

i really need to finish this cutting job tomorrow cause it is gonna rain for like 4 days

i wonder what harm would it do to run 2 wires with spade terminals to plug on coil to a 12v source with a toggle switch to finish up heck throw an inline fuse in there too

 

[Danger18]

PTO solenoid/valve assembly is hanging up. Pretty easy fix.

 

[Spanner]

That would get the job done and give you time for the dealer to do what they are paid for (By Kubota).

Use Alligator Clips on the Battery terminals for your temporary power supply. Of course, be aware the PTO is now out of the Safety interlock circuit. (!)


The loud 'Pop' indicates a dead short-circuit. Most likely a pinched/chaffed wire touching a metal mounting somewhere - rather than the PTO Switch. Have a poke around, you might find it...

Someone here ("Beenthere" ?) posted a good trick to wire a lightbulb into the fuse socket so it glows when the circuit short-circuits. Saves fuses in diagnostics.

With the bulb in place and the PTO 'ON' - Grasp the loom where you can see it passing an edge and move it around and observe the bulb. When you relieve the short-circuit the bulb goes out. Your fault will be in the area of the loom you're holding.

 

[deer assassin]

i think i will use the cig lighter for the power source

i will get this job done then kinda inspect the wiring then off to dealer let them sweat it

 

[Spanner]

:horseshoe: Good Luck.

 

[deer assassin]

Well that did not work. I ran wires from battery to solenoid it kicked on for a second and died I will call dealer monday

 

[Spanner]

Did any fuse blow?

 

[Danger18]

Here are photos of the pto valve that I replaced. Apparently the loose fit of the solenoid on the shaft allows dirt or other debris in and this is the result. Does anyone know how snug the retaining bolt should be behind the solenoid.

Only evidence of a short in the solenoid was a small bump on the plastic cover.

The replacement valve shank is smooth and shinny.

FYI, when you order the new solenoid, it comes with a new valve. $140ish as I recall.

 

[Oldpath05]

Is this a common way now to engage tractor pto's, wires, solenoids and fuses, dont sound like a good way to me, I prefer levers with direct engagement. If I blew a fuse engaging the pto, I'd probably blow a fuse to, good luck with the problem.

 

[Spanner]

Common? Yes. and generally reliable - at least on your main brand colours - Red, Orange, Yellow, Green, Blue. Not sure about Purple...

 

[deer assassin]

Did any fuse blow?

No there was none in. I sent power straight to solenoid it engaged then stoped

 

[Spanner]

Here are photos of the pto valve that I replaced. Apparently the loose fit of the solenoid on the shaft allows dirt or other debris in and this is the result. Does anyone know how snug the retaining bolt should be behind the solenoid. It should be a nut, not a bolt - Finger tight plus 1/6th of a turn. Not very tight at all really.

Only evidence of a short in the solenoid was a small bump on the plastic cover. That's evidence of 'melting' on the inside.

The replacement valve shank is smooth and shinny.

FYI, when you order the new solenoid, it comes with a new valve. $140ish as I recall. Seems reasonably inexpensive for both as a combo.

Some thoughts above in red.

 

[Spanner]

No there was none in. I sent power straight to solenoid it engaged then stoped

The implication is that you have two faults.

1.A fuse blows in the loom when the solenoid isn't even connected.

And

2.The solenoid won't maintain the 'pull' when it's fed direct power anyway. (Or the valve is not actuating).

Even if you replace the solenoid/valve combo as Danger did, you will still have a short-circuit in the loom to find.

 

[deer assassin]

27 hours. The dealer can deal with it