Step 07.20 — B belt: S-wrap the B drive motor pulley¶
Step 20 of 39 · Chapter 07 — A/B belts and tensioning
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Parts:
- the B belt · already on the bench
Do: At the rear-left B drive unit, take the belt round the first stack, over the toothed motor pulley, and back out round the second, the S-shape on p.137. Seat it on the pulley teeth, not a flange.
Check
Nudge the belt: the B pulley indexes tooth by tooth, no slip. A is untouched on its idler stack. B runs below A.
What you're looking at
The same S-wrap as the A drive, this time on the B motor at the rear-left: bearing stack, toothed motor pulley, bearing stack. The plain stack on this unit that A already turns on sits at another height and is not touched.
Source: Voron manual p.137