Ch 0420 / 38
Step 04.20 — A drive: upper frame face down, two M5×30 BHCS¶
Step 20 of 38 · Chapter 04 — A/B drive units and front idlers
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Gather for this segment — steps 04.20–04.23 (~25 min)
Motion box
- F695 bearing ×6
Fasteners, Tools & Misc box
- M5×30 BHCS ×2
- M5 precision spacer ×6
Printed parts
a_drive_frame_lower×1 · bin 04-A
Already on the bench
a_drive_frame_upper, inserts fitted · bin 04-A
Parts:
-
a_drive_frame_upper, inserts fitted · already on the bench - M5×30 BHCS ×2 · Fasteners, Tools & Misc box
Do:
- Frame flat face up: drop the two M5×30 BHCS in from that face, into the 5.4 mm holes either side of the motor bore, 37 mm apart.
- Turn it over, holding the heads, so the threads stand up.
Check
An A part: the cutout circled on p.73 and two heat-set inserts. Both bolts stand square, heads underneath and fully home in the plate.
What you're looking at
Manual p.73 and the pair render: a_drive_frame_upper, built upside down, flat insert face on the bench, so the two M5×30 stand up as the axles the bearing stacks thread onto. There is no pillar; the manual's post is the standing bolt.
Source: Voron manual p.73 · Video: Part 3 @1:04:59