Blue Loctite (McMaster P/N 1004A12) is recommended on all bolts that thread into a tapped hole.
Use the 1-1/8" Bearing Adapter to install the 1/2" ID x 1-1/8" OD Flanged Bearing into the Motor Plate.
Use the 1-1/8" Bearing Adapter to install the 1/2" Rounded Hex ID x 1-1/8" OD Flanged Bearing into the Front Plate.
Install the WCP Output Shaft, 1/2" Acetal Spacer, and Driven Gear in the way shown below.
Bolt the two halves of the Gearbox together using the #10-32 x 1-1/2"L bolts and 1-1/8"L spacers.
The Kraken X60 Motor is installed using two #10-32 x 1/2"L bolts.
Repeat this step for both motors.
If you are using a pinion that is 12T or smaller, the pinion can be installed on the motor output shaft before the motor is installed in the gearbox. Any bigger than 12T, and the pinion will have to be installed after the motor is bolted to the Motor Plate.