Step 02.42 — Mount the idler, matching the drive below it¶
Step 42 of 44 with a helper · Chapter 02 — Z drives, Z idlers, Z rails, deck panel
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Parts:
- M5×30 BHCS ×2 · Fasteners, Tools & Misc box
- one idler of the drive's hand · already on the bench
Do: Offer the idler to the corner. Its pulley must face the same way as the pulley in the drive below it. Fit two M5×30 BHCS through it into the side-rail T-nuts, press the bracket firmly into the corner, then tighten.
Check
Idler pulley and the drive's 20T below lie in one vertical plane. Bracket hard into the corner, its top flush with the top rails.
Helper Sights down both pulleys and says if the belt line twists.
What you're looking at
Manual p.49: the idler bracket going onto the top corner. Its pulley and the 20T pulley in the drive below it have to lie in one vertical plane. A bracket not pressed hard into the corner leaves a twist in that plane.
Tip
Sight down the two pulleys, or hang a length of 2GT belt between them and look for twist.
Source: Voron manual p.49