17. Slide both the #21 Upper and #21 Lower Power Shafts to the left and engage 5/8"
"stepped" ends of Shafts into their respective 5/8" dia. "bore" of the previously
installed #26 Bearings. Push Shafts fully to the left until Shafts "stepped shoulder"
hits bearing.
18. From outside Right #1AR Body Wall, note the two remaining ends of #21 Upper and
Lower Shafts protruding through their respective 1-3/4" Bearing holes. Take the two
remaining #26 Self-aligning Bearings (assembled in Step #15) and with hub of Bearing
pointing outward, engage the 5/8" dia. bore of Bearings onto "stepped" ends of #21
Shafts and slide Bearings tight against the outside of #1AR Body Wall. Note the gap
between shoulder of #21 Shafts and the "face" of their respective #26 Bearing.
Determine how many 5/8 WI Washers are necessary to "shim" this gap - then remove both
Bearings, add shim Washers (equal number of Washers on ends of each Shaft) and re-
mount Bearings on Shafts. Check for proper shimming (do not "force-in" extra washers)
and then from outside Body, insert four remaining 1/4-20 x 1/2 Carriage Bolts into
Bearing housings and secure inside Body with 1/4-20 Locknuts. Tighten set screws in
both #26 Bearings and also tighten 1/4-20 Locknuts holding Bearings.
19. Lock all #26 Bearing Set Screws and check for smooth rotation of #21 Shafts -
remove some 5/8 WI Washers if you've found they "wedge or bind" Bearings' free rotation.
Insert 3/16 sq. x 1 Keys in each Pulley hub engaging the 3/16 slot in their respective
#21 Upper or Lower Power Shaft.
20. Align the two 5" dia. #30 Pulleys with the previously mounted #27 Idler Pulley so
they all have a common vertical center line and this "center line" is parallel with the
inside of #1AL Body Wall; then tighten set screws in #30 Pulleys. Next align the #31
Pulleys with their mating #29 Pulleys mounted on #20 Shafts. (Note Drawings to check
that #31 Pulleys on Upper #21 Shaft align with mating #29 Pulleys mounted to the outside
on #20 Shafts. Also check that the #31 Pulleys on Lower #21 Shaft align with mating #29
Pulleys mounted to the inside on #20 Shafts.) Tighten all set screws. Slip #34 Belts
around mating Pulleys per above alignment instructions.
21. Assemble #15R and 15L Clutches at this time - check Drawings to note difference
between #15R and #15L.
A. On models MD1200 & MD1207: Using 3/8-16 x 3-1/4 Cap Screw with 3/8 WI Washer over
one end, slide into #16 Belt Guide. Follow with three 3/8 WI Washers, slide into #28
Idler Wheel and follow with four more 3/8 Washers. Now slide into slot in arm of #15R
Right Clutch. On other side, slip on four more 3/8 Washers, #28 Idler Wheel, three 3/8
Washers, #16 Belt Guide, 3/8 WI Washer and secure with 3/8-16 Locknut.
B. On models MD1612 & KD1600: Using 3/8-16 x 5 Cap Screw with 3/8 WI Washer over one
end, slide into #16 Belt Guide. Follow with three 3/8 WI Washers, slide into #28 Idler
Wheel and follow with four more 3/8 Washers. Now, slide into "outside" of slot in arm
of #15R Right Clutch. Or. other side, slip on four more 3/8 WI Washers, #28 Idler Wheel,
eleven more 3/8 WI Washers, and third #28 Idler Wheel. Slip on three more 3/8 WI Wash-
ers, #16 Belt Guide, 3/8 WI Washer and secure with 3/8-16 Locknut. (Check assembly
Drawings at this time to make sure you have the various parts assembled in the proper
order and that the #16 Belt Guides - specifically the "90° hooked ends" - are facing the
proper direction.) Align the #16 Guides so they make approximately a 90° angle with
the slotted arm of the #15R Clutch and then loosely tighten 3/8-16 Locknut.
22. Repeat previous step, but this time assembling #15L Left Clutch. Using 3/8-16 x 1
Cap Screws, attach one end of each #49 Spring to the outside of its respective #15D Arm •
secure with 3/8-16 Locknut but leave sufficiently loose so the Spring may rotate freely
on Cap Screw. (Note: Insert Cap Screw so that Spring's "looped" end can lay "flat
against #15D Arm.)
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