Helpful Hints

Below is a short list of operational procedures and helpful hints to ensure your KEITH® WALKING FLOOR® system provides years of good service.

1. The hydraulic pump and PTO system requires hydraulic pressure of 2800 PSI with a minimum of 10 gallons per minute of oil flow for proper operation.
2. The PTO/Pump system requires a pressure relief valve set at 2800 PSI.
3. End-dump truck PTO systems which are set at a maximum 2200 PSI hydraulic pressure will not operate a WALKING FLOOR system properly and could cause serious damage to the system.
4. The WALKING FLOOR system requires a minimum 40 gallon oil reservoir to ensure oil does not overheat during unloading and result in heat damage.
5. Properly installed, smaller oil reservoirs with coolers may be used provided that they supply adequate cooling.
6. A trailer equipped with a standard KEITH WALKING FLOOR drive is capable of unloading approximately 35 tons of material.
7. A trailer equipped with a heavy-duty KEITH WALKING FLOOR drive is capable of unloading up to 55 tons.
8. A trailer equipped with a KEITH WALKING FLOOR drive is capable of unloading most materials in 4 minutes or less, if the PTO/Pump is set up properly.
9. Unloading speed is a function of oil flow. With an oil flow of 30 GPM, the average unloading time is 6 to 7 minutes for a 45 ft/13.5 m trailer with 3.0" cylinders.
10. All WALKING FLOOR systems are designed for two way operation - loading or unloading material. A “Control Valve” controls the forward or reverse floor movement.
11. A partially opened or partially closed ON/OFF ball valve will create heat damage and result in slower unload speeds or complete floor stoppage. Always open or close the ON/OFF ball valve completely.
12. Heat damage will void the warranty on hydraulic components.
13. Always make sure back doors are open before engaging the WALKING FLOOR system.
14. Never walk on or stand in the way of the material while unloading.
15. Make sure quick couplers are fully connected.
16. Be sure the quick couplers are connected correctly (Pressure to Pressure - Return to Return).