Eaton Powerware Série Guide D'installation page 36

INSTALLATION
20 ®
Eaton 9140 (9910-E82/E83) UPS Installation Guide for IBM
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6. Repeat Steps 3 through 5 for the other rail.
7. To tighten the rail adjustment, assemble four M4 machine screws
and four M4 locknuts to the middle of the rail assembly. Tighten
using a 7 mm (9/32") nut driver. See Figure 17.
Repeat for the other rail.
M4 Screws
Figure 17. Tightening the Rail Adjustment (Right Rail Assembly Shown)
S
®
Applications 164201715 Rev 2
M4 Locknuts