28. Install the circular spline so 



that the teeth mesh concentrically 

 (see "ASSEMBLY" below) Check this 

 visually or with a feeler gauge. 



29. Put a few drops of oil (see 27) on 

 the teeth of the circular spline 

 and the flexpline. 



ASSEMBLY 



It is essential that the C/S and F/S toothmesh concentrically engage for 

 proper function as noted below. The unit will function in what is de- 

 fined as the "dedoidal" state, but will be subject to reduced life. 



MINOR AXIS 

 CONCENTRIC DEDOIDAL 



A correct assembly is checked in one of two ways. 



1. When the toothmesh is exposed, a visual or feeler gage check for 

 equal tooth clearance (A) is made as noted above. 



2. In a blind assembly, an access hole adjacent to the C/S provides the 

 means for indicating the motion of a correctly assembled F/S as 

 noted below for one revolution of the W/G. 



.s 



-^?JB:::i 



u PniWTFO 



CONCENTRIC 

 1REV 



^3 



61 



