Scantron 888P+ Repair

Fixing an old Scantron 888p+ grading machine.

Parts:
3mm PU belts ~8.5" long
2.5mm 21mm ID 26mm OD orings

Main drive belt is a Gates 120XL025

=== Timestamps ===
00:00 Introduction
02:28 Identifying the problem
03:32 A look at the construction
06:04 Making new PU belts
07:54 How it works
13:29 Function Demo
16:40 Conclusion