Step 04.12 — A idler: check your work¶
Step 12 of 38 with a helper · Chapter 04 — A/B drive units and front idlers
Tap to enlarge
Parts: none.
Do:
- Compare the five circled features on p.68: axle head in the arm's boss; ribbed upper frame; bearing pair flanges out; M3×40 head and washer in the frame's side; foot-flange bolt hole.
- Set it in the A IDLER tray.
Check
All five features match the page. Spin the bearing pair with a fingertip: it runs free with the frames closed.
Helper Points to each circled feature on the page while you find it on the idler.
What you're looking at
Manual p.68: the finished A idler with five features circled. Together they say the axle, the tensioner, the bearing pair and the frame halves are all where they should be.
Good stopping point · ~40 min since the last one
the A (front right) idler is complete and checked against p.68: bearings flange-out, M5×40 axle in from the top and clamped firm into the arm's nut, M3×40 tensioner with its washer snug. An idler is a self-contained unit; never stop with the aid bolt withdrawn and the stack unsupported.
Source: Voron manual p.68