Takeuchi TL 240 Died and won't crank

[Down 2 Earth]

Operating yesterday and went to load a piece of concrete in the bucket, backed up a bit and unit died. Turned key to crank and nothing. All instrument lights come on and the warning light at my feet flashes 8 times. Checked all fuses and two large fusable links above battery. All check good. Can anyone share a wire diagram or somewhere to start diagnosing? Or a description of the flash codes from warning light?
Machine is roughly 10 years old and has been well maintained.

 

[skata]

I could give you a service manual for a tl140. Not sure how similar they are . Give me your email.
The starter doesn't turn either?

 

[Down 2 Earth]

brendan@down-earth.com
No crank. Don't even get a click from the starter coil.
I did find something new this evening. Checked all the relays on either side of the ECU at feet. One of the relays is double stacked and I get no resistance from the coil. All other coils were 78-79 ohms. So I'm going to determine which one is the horn relay and swap with bad one. Fingers crossed this works
Please send service manual
Thanks,

 

[Down 2 Earth]

The third relay from top has two relays stacked on top of each other. One has no coil resistance

 

[skata]

Sent manuals. But your setup is a little different than the tl140. But I think you're on the right path. On the tl140, we have I think 3 of those "knight beam" relays that go bad. Solder cracks. Then machine safety is intermittent and won't move. It Can be resoldered.

 

[skata]

Found a parts manual for a tl240 and sent you.
Depending on serial number, there are a couple different relay layouts. But I think this is your setup.

 

[heymccall]

Whether this one is your problem or not, open it up and resolder all the cracked (cold) solder joints.
That one is 3 relays in one, and has had to be resoldered on every one of my TL150 machines.

 

[Down 2 Earth]

Thanks Skata and Heymccall
I swapped the relay with bad coil with tested good relay off my Mustang MTL16 and my TL240 started and ran for about a second. Died and no crank again. Checked relay that I swapped and coil tests good.
I'm going to open the BE31 relay that Heymccall suggests next.
I'll update when I find problem. If anyone has further suggestions, I'm open.
Thanks

 

[Down 2 Earth]

After scouring almost every inch of wire and cleaning all connections, we found the coil / solenoid on the 1-way valve was slightly loose. When trying to remove the harness connector it moved. After moving it, we tried starting and machine started right up. I'm attaching a picture of the valve (it sits somewhat hidden up above the muffler) along with a wire diagram.
I also just ordered a service manual so anyone in future can reach out
Thanks for the help

 

[skata]

That connector near the top? Looks like a solenoid. How does that being loose prevent startup?

 

[Down 2 Earth]

Yes. Based on my quick review of parts breakdown and wire diagram I believe it is called the 1-way valve. I have no idea how that prevented the starter circuit but unless touching it was a fluke (not saying it couldn't be) that appears to be the culprit. I'm still working on double checking everything cause like I said we cleaned every connection and checked all relays, switches etc and tried starting after each one. Touching the 1-way made it crank and run. Going to do a little more investigation. Will update if I find more. I just got the wire diagram this morning so really haven't studied it to understand the start circuit

 

[skata]

Unless the ecm kills the engine if it doesn't sense resistance in that circuit?

 

[Down 2 Earth]

Well the 1-way solenoid was or is not the issue. After we got the machine started the engine ran somewhat rough so we quickly loaded onto a trailer to get it off the jobsite and back to our shop. Now it's backed into our shop on the trailer cause it will start for about 1 second and shut off. Now the warning light flashes 7 times. I've found both 7 & 8 flashes is related to the rack actuator.
After much research and the purchase of a full service manual along with finding some Yanmar engine info online it appears to be an issue with the Rack Actuator. Or at least, I have found that the flash codes coming from the relays and ECU panel located at an operators feet is all tied to the engine or at least primarily engine related. I have wire diagrams of both the machine and engine now.
I'm becoming a Takeuchi and Yanmar specialist despite not wanting to be one ; )
If anyone is familiar with a rack actuator issue please advise?
If anyone wants wire diagrams or yanmar diagnostic info, I'm happy to send
Thanks,

 

[skata]

What is a rack actuator?

 

[heymccall]

Rack actuator replaces stop solenoid and throttle linkage.

 

[heymccall]

Borrowed this from here https://www.google.com/url?sa=t&sou...FjANegQIBxAB&usg=AOvVaw3dfL2yteg-rncvzIBS45nL

 

[Kingman]

I could give you a service manual for a tl140. Not sure how similar they are . Give me your email.
The starter doesn't turn either?

I saw your thread on the tl240 and I am looking for a service manual for a tl140 could you please send me a copy of the service manual. Thanks backhoe55@gmail.com

 

[jav]

sorry brain fart not seeing dates

 

[skata]

I saw your thread on the tl240 and I am looking for a service manual for a tl140 could you please send me a copy of the service manual. Thanks backhoe55@gmail.com

Sent you parts and service manual

 

[Kingman]

skata, thanks for sending me the manuals for my TL140. I am going to clean all the connections and check for any wires that may have been damaged. I appreciate the help that I received from the heavyequipmentforum members with more suggestions on things to check. thanks again.