Multiquip 21428 W/A Assembly - OEM Replacement Part for Ride-On Power Trowels

This W/A assembly is a critical OEM replacement component for Multiquip STX-Series ride-on power trowels, ensuring proper hydraulic drive motor operation and balanced trowel speed control. The STX-Series features dual independent hydraulic drive motors that control each spider assembly, and when these components wear or fail, operators experience difficult steering control or noticeably uneven spider rotation speeds between the left and right sides.

According to Multiquip maintenance procedures, trowel speed should be checked at least once annually to maintain optimal performance. Unbalanced operation between the two hydraulic systems can compromise finishing quality and operator control. This assembly addresses issues related to the hydraulic drive system that affects blade speed control via the foot pedal, which ranges from slow speed with light depression to maximum speed when fully depressed.

This part is compatible with the following Multiquip models:

• STX55J6
• STXD6i

Genuine Multiquip OEM part, sold by an authorized dealer.