Ingersoll Rand — Assemble two balls per hole. Secure balls with Ball Sleeve (91).

A Ingersoll Rand service procedure — check it applies to your exact model before use.

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Procedure

1. 9. Assemble Spring (90) and Guide (89) to Spindle, securing with Retaining Rings (88). Install Clutch Spring (87).
2. 10. Lubricate face of Adjustment Washer (86) and install on Spindle.
3. 11. Thread Adjustment Nut (85) onto Spindle, securing with Snap Ring (84).
4. 12. Lubricate Ball (101) of Bit Holder, using the recommended lubricant.
5. 13. Assemble Springs (82) and (83) into Spindle.

Source: manual:16575284_ed2_b.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.