17/06/2026
π PTO Fault Diagnosis & Repair
We were called out to a truck that wouldn't lift the tipper tray.
After discussing the issue with the customer, we carried out our own inspection to confirm the fault. Diagnostics then began, including pressure testing the hydraulic pump and checking the electrical and pneumatic activation systems of the PTO drive unit.
During testing, we discovered the PTO drive unit was producing an abnormal noise and was not engaging correctly.
After stripping down the PTO assembly, we found the root cause: a component had broken off internally and become lodged inside the unit. This restricted the selector arm's movement, preventing full engagement of the PTO and stopping the hydraulic pump from being driven.
Fault found. Diagnosis confirmed. Repair underway. π§
β οΈ If your tipper, PTO, hydraulics, or auxiliary equipment isn't operating correctly, don't wait for a complete failure. Early diagnosis can save significant downtime and costly repairs.
π Contact WCM today for expert diagnostics, repairs, and field service support.