Multiquip 21856 Sauer Danfoss OMTW400 Hydraulic Motor - OEM Replacement Part

This hydraulic motor drives the rotor system on Multiquip ride-on power trowels, converting hydraulic pressure into the rotational motion that spins the blade rotors at speeds up to 160 RPM. The Sauer Danfoss OMTW400 is a critical component in the trowel's hydraulic drive system, which operates on 8 gallons of Parker DuraClean ISO 46 hydraulic oil.

When this motor fails, symptoms include loss of rotor speed control, inability to achieve proper blade tip speeds (normally 2,010 ft./min. on the HTX6H), or complete loss of rotor rotation. The hydraulic system requires regular maintenance including daily lubrication of spiders (1 to 1½ shots) and thrust collars (1 shot), plus scheduled hydraulic oil filter changes to protect motor longevity.

Compatible with the following Multiquip ride-on power trowel models:

• HTX6H
• STX55J6
• STXD6i

Always disconnect battery cables before performing hydraulic system service or maintenance. Ensure hydraulic oil is at proper level and filters are clean before installing a replacement motor.

Genuine Multiquip OEM part, sold by an authorized dealer.