Service Bulletin Description:
The current aluminum drive hub seizes onto the spin tube and makes disassembly difficult. By changing the material of the drive hub to glass filled nylon, less effort will be needed to remove the hub and serviceability will be improved.
This Service Bulletin PDF download contains information for the following:
7MMVWC400YW2 7MWTW5500XW2 MVWC400XW4 MVWX700XW2 WTW5610XW3 7MMVWX500YW2 7MWTW5550YW2 MVWC450XW4 WTW4950XW3 WTW5640XW3 7MMVWX510YW1 7MWTW5560YW1 MVWX500XW2 WTW5500XW3 WTW5700XW3 7MMVWX700XL2 7MWTW5700YW2 MVWX550XW2 WTW5550XW3 7MWTW1950YW2 CAW12444XW2 MVWX600XW2 WTW5600XW3
The PDF may also contain information that applies to additional models not listed.