Ch 0421 / 38
Step 04.21 — A drive: two-bearing stack on the near post¶
Step 21 of 38 · Chapter 04 — A/B drive units and front idlers
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Parts:
- 2× M5 precision spacer · Fasteners, Tools & Misc box
- 2× F695 bearing · Motion box
Do:
- Work on the near bolt, ~17 mm from the bore centre; the far one is ~34 mm. Measure if the drawing is unclear.
- Bottom to top: M5 precision spacer, F695 flange down, F695 flange up, M5 precision spacer.
Check
One pair, flanges out, one spacer each end: four items, 10 mm of stack. Four bearings here means the wrong bolt.
What you're looking at
Manual p.74: the post nearer the motor bore, taking one bearing pair: spacer, two F695 flange-out, spacer. This post carries only one belt, so it takes half the stack of the other one.
Caution
Rev D+ / LDO: brass M5 precision spacer in place of the manual's "M5 shim". src
Source: Voron manual p.74 · LDO Build Notes (Rev D)