Ch 0415 / 38
Step 04.15 — B idler: cap the stack with the upper frame¶
Step 15 of 38 · Chapter 04 — A/B drive units and front idlers
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Parts:
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front_idler_left_upper×1 · bin 04-B
Do: Lower front_idler_left_upper over the stack until the two frames meet.
Check
Frames flush, no gap, no rock.
What you're looking at
Manual p.69: front_idler_left_upper, the tall one at 21.6 mm where the A idler's upper was short. The uppers are handed the opposite way to the lowers, so two that look alike means two of the same hand.
Source: Voron manual p.69