Siemens UL 1066 Operating Instructions Manual page 207

12.8.2.2 Installing the MOC Baseplate Assembly
The MOC baseplate assembly is secured to the circuit breaker compartment (cradle) by two tabs in the rear and two screws in the front.
With the screws inserted from the inside of the cubicle, and the nuts and lockwashers on the outside, the nuts must be torqued to 
71 lbin (8 Nm).
4
2
3
1
12 – 10