Step 06.16 — Extend all four Z idlers¶
Step 16 of 42 with a helper · Chapter 06 — Z axis (and Chapter 06b — Gantry squaring)
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Gather for this segment — steps 06.16–06.21 (~40 min)
Tools and consumables
- zip tie, 3×150 mm ×1
Already on the bench
- one Z belt, first end clamped
- the same Z belt
- the upper belt clip on this corner
- the two M5×16 BHCS on top of this corner
Parts: none.
Do:
- The tensioner is the M3×16 under the blue slider, 2.5 mm key from below.
- Loosen it anticlockwise from below, out to the maximum before it comes undone.
- Tighten back 4 turns. Repeat on all four idlers.
Check
All four idlers extended and backed off by the same 4 turns, counted out loud, with none of the four bolts fallen out.
Helper Counts the turns aloud at each idler and ticks off each corner when it is done.
What you're looking at
The Z idler is the toothed pulley on a sliding bracket at the top of each upright. Its bolt is the tensioner: it moves the pulley, changing how much belt the loop needs. The same four turns back parks all four identically.
Source: Voron manual p.117