Hi,
I am here looking for some advice on troubleshooting a problem with a Takeuchi TB80FR excavator. I am having an issue where the boom will not raise at all. All other excavator functions/controls are fine. I am able to slew, open and close the bucket, extend, move the swivel knuckle left and right, operate the blade and track no problems. When pulling back on the control to raise the boom I get no feedback or movement. It has been working fine up until now with good power and speed. It has a few very small hydraulic weeps from the lines since I have had it but overall in pretty good condition.
After some research it "seems" to potentially be pointing at an issue with the interference safety system.
So far I have:
1. Replaced the three interference sensors located on top of the boom and have also replaced the operator safety sensor located under the arm rest inside the cabin with new ones.
2. I have also cleaned the muck off the two original interference sensors underneath the offset knuckle swivel.
3. Changed the controls to back hoe pattern (to see if there was an issue with the controller - still no response)
4. Lowered the boom to attempt to reset any interference sensors
5. Checked hydraulic fluid level ok
6. Visual check for any obvious broken wiring
It's currently located on a farm a few good hours from a service center so I am hoping that someone can point me in the right direction for further troubleshooting. Does anyone know if there is an override/reset switch for the interference system or how to test it is functioning properly? Any other places I should check to narrow down the problem? Maybe a stuck/blocked valve?
Also if anyone has a copy of the Service Repair manual that would be a great help!
I hope everyone had a great Easter Holiday.
Thanks in Advance
TB80FR.
I am here looking for some advice on troubleshooting a problem with a Takeuchi TB80FR excavator. I am having an issue where the boom will not raise at all. All other excavator functions/controls are fine. I am able to slew, open and close the bucket, extend, move the swivel knuckle left and right, operate the blade and track no problems. When pulling back on the control to raise the boom I get no feedback or movement. It has been working fine up until now with good power and speed. It has a few very small hydraulic weeps from the lines since I have had it but overall in pretty good condition.
After some research it "seems" to potentially be pointing at an issue with the interference safety system.
So far I have:
1. Replaced the three interference sensors located on top of the boom and have also replaced the operator safety sensor located under the arm rest inside the cabin with new ones.
2. I have also cleaned the muck off the two original interference sensors underneath the offset knuckle swivel.
3. Changed the controls to back hoe pattern (to see if there was an issue with the controller - still no response)
4. Lowered the boom to attempt to reset any interference sensors
5. Checked hydraulic fluid level ok
6. Visual check for any obvious broken wiring
It's currently located on a farm a few good hours from a service center so I am hoping that someone can point me in the right direction for further troubleshooting. Does anyone know if there is an override/reset switch for the interference system or how to test it is functioning properly? Any other places I should check to narrow down the problem? Maybe a stuck/blocked valve?
Also if anyone has a copy of the Service Repair manual that would be a great help!
I hope everyone had a great Easter Holiday.
Thanks in Advance
TB80FR.