I am currently working on a Lull 644D-34 machine and have recently replaced around 8 hydraulic hoses that connect the master control to the boom. However, I seem to have mixed up the hose order, resulting in the controls being switched up. I have tried referring to the manual for guidance on the correct hose setup, but have not found any relevant information. Can anyone provide insight on where I can find the correct hose configuration or offer troubleshooting tips to resolve this issue and ensure the controls are operating correctly? Thank you.
To troubleshoot, try operating each control to see how it affects the equipment. If, for example, the boom lift control is now operating the tilt cylinder, you have found the problematic hose. Go through each hose individually, labeling them as you go. Reconnect them in the appropriate order. It may be time-consuming to figure out, but if you can't visually trace the hoses, it's definitely worth a shot.
One way to troubleshoot hydraulic system issues is to first identify which controls are functioning properly, and then assess which pairs may have been inadvertently switched causing malfunction. You can also determine which hoses are pressurized by observing how they tense up when the controls are operated by a helper. Both the hose on the pressurized side of a cylinder and the opposite side will remain pressurized until the return side is opened. Once the cylinder completes its stroke, only one side will remain pressurized. It may take some time to differentiate between the hoses, but it is a feasible task to determine the minimum number of hoses that need to be adjusted for correct operation.
Just dropped you a private message
Answer: The correct hydraulic hose configuration for the Lull 644D-34 machine may not be specified in the manual. You may need to consult with a Lull dealership or service center for the accurate hose setup.
Answer: To troubleshoot switched controls on your Lull 644D-34, you may need to identify the correct order of the hydraulic hoses by consulting with a professional technician or contacting Lull support for guidance.
Answer: Some troubleshooting tips include checking for any misconnections or reversed hoses, verifying the hydraulic system pressure and flow, and consulting with experts to ensure the correct hose configuration for optimal control operation.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.