TM  10-3930-643-34 STEERING  TROUBLESHOOTING  AND  MAINTENANCE. 9-2. Steering Gear Assembly. (Sheet 5 of CLEANING/INSPECTION   (cont) 15. Inspect 54 balls (20) for flat spots or  wear. Balls (20) should be same size within 0.0001 inch. 16. Inspect all other parts. Refer to paragraph 2-9. ASSEMBLY NOTE All parts must be clean and free of abrasive dirt. All moving parts must be lubricated with multi-purpose  gear  grease. 17. Using a wooden dowel and hammer, install new seals (25 and 24), bearing (23) and ring (22). 18. Position ballnut and worm assembly (21) with return guide holes facing up. 19. Aline grooves in ballnut and worm assembly (21). 20, Using pliers, insert 27 balls (20) into any return guide hole. 21. Slowly rotate worm away from guide holes while inserting balls (20). 22. Continue inserting balls (20) until circuit is filled from the bottom of one hole to the bottom of the other or until stopped by reaching end of worm. (cont) 8) Go to sheet 6 9-10

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