MacDon D65 Operator's Manual page 177

Installing Timed Drive V-Belts
NOTE:
New belts must be installed as a matched pair. Never pry
belt over pulley. Be sure drive motor is fully forward.
1. Install V-belts (C) onto pulleys.
IMPORTANT:
To prolong belt and drive life, do NOT overtighten belt.
2. Turn adjuster bolt (B) to tighten belts. The belts should
deflect 5/32 in. (4 mm) with 12–17 lbf (52–77 N)
of force applied to each belt at mid-span when
properly tensioned.
3. Tighten the two bolts (A).
4. Close endshield. Refer to
38.
5. Check tension of new belts after a short run-in period
(about 5 hours).
Removing Timed Knife Drive Belt
This procedure is applicable to the knife drive on both left and right sides.
1. Open endshield. Refer to
37.
2. Loosen two nuts (A) on belt idler bracket to relieve
tension on belt.
3. Loosen nut (B) on idler pulley and slide idler down to
loosen belt.
169899
MAINTENANCE AND SERVICING
Closing Endshields, page
Opening Endshields, page
165
Figure 6.77: Knife Drive V-Belts
Figure 6.78: Knife Drive
Revision A