ETS-Lindgren 2171B Boresight Antenna Tower - Manual (Page 37)

Assembly Instructions | 37
View of motor base pulley with cam followers removed.
With teeth facing inward, continue routing the belt down,
around the motor base pulley, and back up.
Replace the four cam followers and tighten with an Allen wrench.
View of motor base pulley with threaded belt
and re-installed cam followers.