By Robert Sheaf • Founder of CFC Industrial Training
In this month’s challenge, we visit a small concrete supplier. Its mixing truck would run fine when loading and mixing concrete for a customer’s job site. However, when the drum rotation was reversed to discharge the concrete at the job site, the hydrostatic system would start to make a lot of noise and the system started to overheat. Additionally, the drum speed (in rpm) was slower than normal, so the operator reversed the drum to keep the concrete mixing until a service technician arrived to troubleshoot the problem.
They found that swapping the cross-port reliefs did not make any difference. As usual, the circuit shows gauges in four places, but two were broken and the two on each motor port were missing.
What would you do next? We welcome responses of all kinds directly to Robert Sheaf at rjsheaf@cfc-solar.com or to mgannon@wtwhmedia.com. The solution to this Troubleshooting Challenge will be provided in conjunction with our August 2024 issue.
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