Ch 0410 / 38
Step 04.10 — A idler: refit the M5×40 SHCS from the top¶
Step 10 of 38 · Chapter 04 — A/B drive units and front idlers
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Parts:
- the same M5×40 SHCS · already on the bench
Do: Drop the M5×40 SHCS in from the top through the arm's top boss and run it down into the M5 nut in the foot until the head seats and the stack is clamped firm. It threads into steel, not plastic.
Check
Head seated in the arm's top boss, both bearings spin free, and the arm still slides fore-aft in the frame's slots (verify on bench).
What you're looking at
Manual p.66: the M5×40 refitted from the top as the idler's axle. Its head seats in the arm's top boss and its thread runs into the M5 nut in the foot, clamping bolt, spacers, bearings and arm into one sliding unit. Not the tensioner.
Source: Voron manual p.66