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For iOptron Internal Use Only 

 

 

 

 

10. Thread the belt over motor pulley and attached 

the motor to the worm assembly. Tighten the 
screws slightly. 

 

11.  Tension the belt while tighten the motor 

mounting screws. 

 

12. Reconnect the cable and put the cover back. 

CASE (3) Adjustment 

13. The  worm/worm  pulley  lateral  movement  is 

cause  by  a  loose  worm  bearing  end  cap.  It  is 
not  accessible  without  remove  the  worm 
assembly  from  the  mount.  Follow 

Step  2

  to 

Step  4

 

to  remove  motor  cover,  cable,  control 

board and motor. 

14. Set  the  Gear  Switch  to  locking  position. 

Carefully remove the gear switch locking pin. 

 

15. SLOWLY  Pull  the  gear  switch  knob  outwards. 

Put  your  palm  underneath  to  collect  the  little 
spring  and the  ball  bearing. The  ball  bearing  is 
spring loaded and very easy to be sprung off.  

 

 

Locking Pin 

Содержание GEM28

Страница 1: ...nt 1 The DEC unit is connected to the RA axle via 4 socket screws Two is on side the DC unit One is on bottom of the DEC unit The fourth one is inside the mount Remove front polar scope cover and look...

Страница 2: ...and control board to access the top screw 6 Remove mount DEC motor cover 7 Carefully unplug the motor cable from the DEC control board 8 Unscrew the screw post and two screws that hold the plastic ba...

Страница 3: ...xam the worm assembly movement when hold and rotating the ring gear 1 If the whole worm assembly moves up and springs back down this is normal for a spring loaded worm gear system 2 If the whole worm...

Страница 4: ...king screws Make sure they are tightened 7 Release hinge bearing end cap locking screw half turn 8 Turn the brass end cap clockwise all the way in using a pair of strong tweezers or a screw driver Rot...

Страница 5: ...lateral movement is cause by a loose worm bearing end cap It is not accessible without remove the worm assembly from the mount Follow Step 2 to Step 4 to remove motor cover cable control board and mo...

Страница 6: ...ashers as well Pull the worm assembly from top of the ring gear compartment 18 Tap the bearing out of the housing if needed The following is a set of a bearing a washer and a hinge pin The following s...

Страница 7: ...n the shaft and tighten the set screw onto it Make sure that the worm shaft end if aligned flash to the pulley surface 23 Before install the worm assembly insert one hinge bearing into the bearing hou...

Страница 8: ...9 Now install the gear switch back 30 Insert the spring into the gear switch hole Put the ball bearing on top of it Insert gear switch into the worm assembly while align the ball bearing to the slot P...

Страница 9: ...For iOptron Internal Use Only 9 32 Check the play with worm ring gear engaged while rotating the ring gear 33 Follow steps 10 12 to put the motor control board and cover back...

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