MacDon D65 SP DHOM - Manual (Page 177)

MAINTENANCE AND SERVICING
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 Closing Endshields, page
38 .
5. Check tension of new belts after a short run-in period
(about 5 hours).
Figure 6.77: Knife Drive V-Belts
Removing Timed Knife Drive Belt
This procedure is applicable to the knife drive on both left and right sides.
1. Open endshield. Refer to Opening Endshields, page
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.
Figure 6.78: Knife Drive
169899 165 Revision A