PU B-1-31

Frequently Asked Questions

Q: What is the PU B-1-31 low pressure spring used for?
A: The PU B-1-31 is a low pressure spring assembly component for Pallet Mule model 6600 manual pallet jacks. This spring manages pressure distribution in the hydraulic system during lifting and lowering cycles.

Q: Which Pallet Mule models does the PU B-1-31 fit?
A: The PU B-1-31 is specifically designed to fit Pallet Mule model 6600 manual pallet jacks. Before ordering, verify your equipment model matches the 6600 series to ensure proper fitment.

Q: What symptoms indicate a failed low pressure spring?
A: If your Pallet Mule 6600 exhibits sluggish lifting, inconsistent pressure response, or difficulty maintaining raised loads, the PU B-1-31 low pressure spring may be fatigued or broken. A damaged spring loses its ability to regulate pressure cycling.

Q: How does a low pressure spring differ from a main load spring?
A: A low pressure spring manages system pressure regulation and pilot pressure during normal operation, whereas a main load spring carries the primary load-supporting function. The PU B-1-31 is engineered for controlled pressure response rather than direct load support.