Multiquip 44085 Sheave Mast Base - OEM Replacement Part for Light Towers

The sheave mast base is a critical component in the light tower's winch and hoist system, guiding the wire rope that raises and lowers the mast assembly. Located at the base of the main mast, this sheave ensures smooth cable operation during the extension and retraction cycles as the tower moves through its full range of motion—exceeding 25 feet when fully deployed.

In the LT6KV light tower configuration, the hoist assembly uses a motor-driven rotating drum with wire rope and reduction gears to extend the mast sections. The sheave at the mast base provides proper cable alignment and reduces friction during operation. Multiquip specifies that the electric hoist system is tested for an operational life span of 1,000 cycles (3,000 movements up and down), or three years when cycled three times per day. Regular inspection of the sheave for wear, proper alignment, and smooth rotation is essential to prevent cable damage and ensure reliable mast operation.

This part is essential for maintaining safe tower deployment and retraction, working in conjunction with the magnetic proximity switches that signal when the mast has fully extended or retracted.

Compatible models:

• LT6KV Light Tower

Genuine Multiquip OEM part, sold by an authorized dealer.