Pentax 10 Cleaning the Secondary

16. If you have a source of clean dry air, blow the water off the mirror,

including the rear triangles. If you don't have the air source, allow the

mirror to stand until dry.

17.Replace the mirror in the cell in its original orientation (serial number

at the top) and press the strap tape against the mirror edge.

18. Install the top post, orient it with the screw head mark to the outside,

and tighten the nut.

19. Hold the cell near the rear of the mirror box and plug in the fan cord.

20. Align the posts with the holes in the mirror box opening and place the

cell flat against the rear of the box with the screw holes aligned.

21. Install the six screws, leaving them slightly loose until all are started.

22. Tighten the six screws until snug.

23. Check the mirror sling adjustment per page 7.

24. Collimate per the instructions on page 11.

Cleaning the Secondary

1. Loosen the secondary mount center nut a turn with a 9/16"wrench.

2. Hold the secondary mirror assembly with one hand and remove the

nut with the other.

3. Slide the assembly down enough to allow access to the tiny heater wire

connector between the mount and the spider hub and unplug it.

4. Remove the assembly completely from the scope.

5. Hold the assembly so the mirror surface is horizontal, facing up, and

remove the two shroud screws.

6. Slide the shoud off, then lift the mirror away from its mount.

7. The back surface of the mirror will be coated with heat transfer

compound. Scrape it off the mirror and return it to the center opening

of the foam pad.

8. Wipe any remaining compound from the back of the mirror.

9. Clean and dry per the same procedure as the primary.

10. Place the clean, dry mirror onto the heat ransfer compound on the pad.

11. Slide the shroud on so its rim is just snug on the mirror edge, as it was

before removal. Insert and tighten the two shroud screws

12. Slide the mount stem through the spider hub and to plug in the heater

connector. Rotate the assembly carefully to tuck the wire between the

hub and mirror mount and align the three detents in the clutch plate

with the three collimation screws.

13. Install the lock nut and tighten gently with the wrench, about 1/6 turn

beyond finger tight.

14. Collimate the scope per the instructions on page 11.