JCB 3CX Loader Curl Cylinders not in synch

Discuss loaders/backhoes here

Topic author
Daver
Posts: 10
Joined: Fri Mar 02, 2018 1:50 pm
Flag: United States of America

JCB 3CX Loader Curl Cylinders not in synch

Post #1 by Daver » Tue Apr 03, 2018 1:56 am

Hello All,
I had a loader pivot pin that would not take grease. It was the right side pin located at the lower end of the vertical link that connects the loader arm to the bucket curl cylinder rod pivot. I removed the pin in order to clear the obstruction in the grease pathway, and when I did the assembly shifted very slightly upward. It was so slight I figured I could just align with a come along when ready. However, I let the machine sit overnight while I cleaned the pin and now the unconstrained right side curl cylinder has extended about 5 inches further than the left (still constrained) curl cylinder. In order to reassemble the pin and link I need to close the only the right side cylinder. Does anyone know how I go about this now that its travel is out of synch with the left. Any help will be appreciated. Thanks.


essexpete
Posts: 2683
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 451 times
Been thanked: 274 times

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #2 by essexpete » Tue Apr 03, 2018 9:05 am

Just operate the crowd spool till it lines up.


Topic author
Daver
Posts: 10
Joined: Fri Mar 02, 2018 1:50 pm
Flag: United States of America

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #3 by Daver » Tue Apr 03, 2018 12:55 pm

Hi essexpete. Thanks for the reply. I don't know what the crowd spool is, but I will look into that. Are you saying that there is a way to single out one hydraulic line, allowing me to activate only right side bucket curl while leaving the left still?
Thanks again.


agrimax
Posts: 400
Joined: Mon Sep 28, 2009 9:49 pm
Real name: R
Location: Co Down
Has thanked: 7 times
Been thanked: 60 times
Flag: Great Britain

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #4 by agrimax » Tue Apr 03, 2018 5:52 pm

The cylinder that isn't connected will move first when you operate the lever as there is no load on it.Just move the lever to pull the bucket back and that unattached cylinder will come in first before the other one moves the bucket.
If,for whatever reason it doesn't,slacken the pipes on the cylinder and push the rod back by hand. You will loose some fluid though.


essexpete
Posts: 2683
Joined: Fri Jul 13, 2007 12:43 am
Real name: essexpete
Has thanked: 451 times
Been thanked: 274 times

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #5 by essexpete » Tue Apr 03, 2018 11:31 pm

Agrimax explained better as usual. Crowd = curl


Topic author
Daver
Posts: 10
Joined: Fri Mar 02, 2018 1:50 pm
Flag: United States of America

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #6 by Daver » Wed Apr 04, 2018 12:22 am

Hi agrimax, thanks for the reply. I assumed that given the power of these cylinders, even the "loaded" left side wouldn't even notice the drag of the empty bucket and they would both move the same amount. Thanks to both you and essexpete I have something to try tomorrow and will report back with the results. Take care.


Mrsmackpaul
Posts: 1007
Joined: Mon May 06, 2013 11:02 am
Real name: Paul Griffiths
Has thanked: 382 times
Been thanked: 252 times
Flag: Australia

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #7 by Mrsmackpaul » Wed Apr 04, 2018 8:27 am

Something to maybe look into
If the ram has creeped over night with no load it means you either have a internal or external leak that might attention


Paul
Your better to die trying than live on your knees begging


Topic author
Daver
Posts: 10
Joined: Fri Mar 02, 2018 1:50 pm
Flag: United States of America

Re: JCB 3CX Loader Curl Cylinders not in synch

Post #8 by Daver » Wed Apr 04, 2018 8:30 pm

Thank you to all. Once the machine was running I just tapped the curl lever inward a few times and walked the link right into alignment. It worked exactly as you said it would. Thanks again.


Return to “Loaders/Backhoes”

Who is online

Users browsing this forum: No registered users and 8 guests