DUST 9U6063 - Caterpillar

If the chuck from the 7S5437 Nitrogen Charging Group is installed directly on the 9T7659 Valve Assembly, the top portion of the valve assembly can be damaged. This could allow high pressure nitrogen in the accumulator to propel some valve components out of the top of the accumulator with great force. This could result in personnel injury. Use the 1U5551 Extension between the chuck and the top of the 9T7659 Valve Assembly to avoid putting a side load on the valve.
Location of 9T7659 Valve Assembly on steering system accumulators.Make a note of this information in the Steering System Testing and Adjusting Modules for the 785 and 789 Trucks.