User manual

Barrett Technology, Inc.

BA4-310 System User Manual Version 1.1

Figure 29 - Elbow Motor Inner Pinion Cable Wraps

[ ] 11.

Place the brass lug at the free end of the remaining shorter cable into the termination

slot on the outer motor pinion. Make sure the lug is fully seated in the termination,

then, keeping the inner pinion stationary, wind the free cable onto the outer pinion with

a right-hand pitch by rotating only the outer pinion. Maintain a slight axial force on the

outer pinion during this step so that the seam between it and the inner pinion does not

open.

[ ] 12.

Lubricate (lightly) the pre-tensioning worm with appropriate grease. Barrett

Technology, Inc. recommends Mobil-1 synthetic grease.

Insert the worm into the outer

motor pinion and turn it with the hex wrench (thereby rotating the tensioner

mechanism) until any slack in the free cable length has been taken up on the motor

pinion. The tensioner screw is best reached through the access hole in the bottom of the

differential.

[ ] 13.

Slowly move the elbow into its hyper-extended position while carefully guiding the

cables between the pulleys and pinions to make certain the cables follow the grooved

paths properly.

CAUTION !!!: Attempting to perform this step too quickly may cause cables to slip off

of their respective pulley surfaces or to become crossed.