In Reply to: FAN BELT CROSS REFERENCE -GATES posted by Tim Daley(MI) on July 16, 2018 at 15:13:56:
The Gates number on the replacement belt drawing 86520008 for the 9N-8620-B is 8138. The effective belt length is 45.07 inches. Using the New Holland Engineering program to calculate belt length from the drive layout on 9N-8620-B, we came up with 43.81/43.57. The difference has to do with how the belt "rides" in the sheave grooves in actuality compared to theoretical.