44. Turn the motor unit in its middle 

 position (from the middle posi- 

 tion, the motor unit can turn at 

 least 120° in either direction 

 without overstretching or over- 

 compressing the coil on the 

 inner housing). Then turn the 

 shaft with a sharpened wooden 

 pencil until you can position 

 the six socket-head screws to 

 fasten the circular spline 



with the outer housing. Make 

 sure that the motor unit stays 

 in its middle position while 

 you are turning the shaft. If 

 the shaft does not turn freely, 

 or you hear a rabbling noise 

 while turning the shaft, a 

 problem exists. The brush 

 springs are probably destroyed 

 because of moving the motor arm- 

 ature out of the motor field 

 during assembly steps 25 to 44. 



45. Slip the spacer over the shaft. 



46. Press the angular contact ball bearing (FAG no B.7000.E) into the housing 

 so that it can take a thrust load sufficient to push the bearing out. 

 Make sure not to transmit pressure or impact through the rolling elements 

 of the bearing while pressing it in. 



47. Put a few drops of 

 high-quality ap- 

 proved oil (see 17) 

 with a viscosity 

 index of 70 into 

 the ball bearing. 



66 



