Bell and Howell Worm Gear Replacement PART 4 скачать в хорошем качестве

Bell and Howell Worm Gear Replacement PART 4

This fourth part shows how to reinstall the main mechanism, sprocket timing, final checks and test with film. CAUTION: Always unplug the projector when working inside it. This video applies to Bell and Howell 1500 to 2500 Autoload 16mm film projectors (not slot-loaders). While the external covers differ over the model years, the internal main mechanism containing the worm gear is essentially the same. This video also does not apply to still-function machines (e.g. 1552, 1592, 2592 models), as they require a different worm gear (although they may be converted). 0:00 Start 0:09 Reinstalling mechanism in projector 1:11 Top screws in mechanism 2:43 The secret of the left bottom bolt 5:01 Bottom right bolt 5:44 Timing sprockets = good film loops 11:32 How loop restorer works 13:10 Reinstall lower left film guide 14:41 Grease worm and sprocket gears 16:57 Reinstall idler gears in trans 20:12 Reinstall motor 20:40 Reinstall belt & fan 21:29 Reinstall lamp & shield 21:47 Grease transmission gears 23:35 Check operation before reinstalling covers 25:36 Reinstall covers 28:22 Test with film Necessary tools: Bristol spline screwdriver set (Xcelite 99PS-60) (or just get the Xcelite handle and two bits: 99-66, 99-64, 99-62 - check eBay) 1/4 drive ratchet, extension, and at least 3/16, 1/4, 5/16, 1/2 sockets 5/16 box-end wrench (ratcheting box-wrench is best for screw behind flywheel) 2 snap ring pliers, large and small (I use S-K 7634 & 7638) Medium needle nose pliers Misc. smaller screwdrivers 3/32 allen wrench Optional tools: Cheap electric screwdriver 1/4" drive Deep 1/4" sockets ($12.99 at Harbor Freight) Nut driver set Useful links: https://www.ebay.com/itm/236558213964 (my eBay listing for new PA6-GF nylon gear) https://www.urbanskifilm.com/ (large Bell & Howell inventory) https://van-eck.net/en/product/bell_-... https://16mmfilmtalk.com/viewforum.ph... (best 16mm forum) https://www.paulivester.com/films/pro... (models list) https://www.film-tech.com/warehouse/i... (manuals)    • How a Film Projector Works   (how projectors work)