The cables on a manual water truck stretch some initially after use. If leaking occurs at outlets, you might need to adjust the cables.
Follow these steps to adjust water truck cables:
Remove the clevis pin in the cable connection to the valve. Ensure that the valve is free of debris.
Close the valve completely with a wrench.
Shift in-cab handle to the closed position.
Adjust the cable housing using the two jam nuts on the mounting bracket until the pinhole in the clevis lines up with the hole in the valve lever.
Install the pin.
Check for closure by opening and closing. Fine-tune adjust as needed.