Rear remote pressure drops when using attachments

[Alan]

Your JCB's rear remotes work fine until you actually hook up an attachment and try using it under load, then pressure tanks and everything moves like molasses. Front loader still works great though. Could be priority valve issues, flow divider problems, or relief valve stuck.

What's your troubleshooting sequence to find the weak link?

 

[Earthmoverz]

Classic JCB drama. I usually kick things off by checking the relief valves first, then isolate each remote to see if one cylinder is getting starved of flow. It really cuts down on the guesswork before changing any parts.

 

[Hyperion]

Is it moving slowly under load? I’d connect it up, feel the flow, and listen for any hissing or uneven movement. That sluggishness often points to a priority valve or flow divider acting up.

 

[JCBeeGee]

I’ve been there too! My routine is to check the oil level and look for contamination, then test each remote unloaded and again under load. If the front works fine, it's usually a problem with the rear's priority valve or flow divider.