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Ch 0422 / 38

Step 04.22 — A drive: four-bearing stack on the far post

Step 22 of 38 with a helper · Chapter 04 — A/B drive units and front idlers

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Parts:

  • 4× M5 precision spacer · Fasteners, Tools & Misc box
  • 4× F695 bearing · Motion box

Do:

  1. Work on the far bolt, ~34 mm from the bore centre. Measure if in doubt.
  2. Load two pairs bottom to top: spacer, F695 flange down, F695 flange up, spacer, spacer, F695 flange down, F695 flange up, spacer.

check Check

Eight items, 20 mm of stack, exactly two spacers touching in the middle, and no flange facing another flange.

helperHelper Reads the eight-item stack order aloud and hands you each part in turn.

What you're looking at

Manual p.74: the post farther from the motor bore, taking two pairs. Both belt planes pass through this drive, so it needs two channels stacked, separated by the two spacers that meet in the middle. It is the most mis-stacked assembly in the build.

Caution

Rev D+ / LDO: all four "M5 shims" here are brass M5 precision spacers. src

Source: Voron manual p.74 · LDO Build Notes (Rev D)

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