Maintenance Nov. 12, 2018 Maintenance When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation.When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation. When using concrete pump truck, it is advisable to ... Jun. 09, 2018 Concrete pump truck. concrete delivery pipe maintenance When using concrete pump truck, it is advisable to check regularly on concrete delivery pipe as follows:(a) Check whether the concrete delivery pipe is worn and whether the clamp is loose or damaged before each operation.