Step 07.3 — Trace the A belt path¶
Step 3 of 39 · Chapter 07 — A/B belts and tensioning
Tap to enlarge
Parts: none.
Do: Trace on p.126: X carriage → left XY joint → left Y rearward → rear-left idler stack → rear extrusion → A drive S-wrap → right Y forward → front-right idler U-turn → rearward → right XY joint → carriage.
Check
On the right-hand side the A belt gives two parallel runs, on the left one. The A drive is the rear-right unit. survey
What you're looking at
The A belt is the one driven by the rear-right motor, and it is the upper of the two belt planes: its motor pulley and front idler sit 10 mm higher than B's. The diagram traces the same loop top-down.
Source: Voron manual p.126