MU 21573

Frequently Asked Questions

Q: What is the purpose of the MU 21573 screw plug on a Multiton pallet jack?
A: The MU 21573 is an OEM replacement screw plug designed to seal the hydraulic reservoir opening on M and S frame manual pallet jacks. It prevents contamination and hydraulic fluid leakage from the main reservoir tank.

Q: Which Multiton models use the MU 21573 screw plug?
A: The MU 21573 screw plug is compatible with Multiton model S Foot Control manual pallet jacks and M frame configurations. It fits the hydraulic reservoir opening on these models. Verify your pallet jack frame size and model designation before ordering.

Q: Why is it critical to replace a damaged MU 21573 screw plug?
A: A missing or damaged screw plug allows hydraulic fluid to leak from the reservoir, reducing system pressure and lift capacity. Contamination and air infiltration also compromise hydraulic performance and may cause system failure. Replace immediately if the plug is missing, cracked, or corroded.

Q: What material is the MU 21573 screw plug made from?
A: The MU 21573 is constructed to seal the reservoir opening securely. Detailed material composition and thread specifications are not published in the manufacturer documentation. Contact us if you need material data for corrosion or compatibility assessments.

Q: How do I verify the MU 21573 is sealing properly?
A: Inspect the plug regularly for hydraulic fluid weeping or seepage around the reservoir cap area. Check that the plug is hand-tight or wrench-tight according to manufacturer specifications. If fluid leaks persist or the plug spins freely, replacement is required.