MacDon D65 Operator's Manual page 189

1. Shut down the engine, and remove the key from the
ignition.
2. +
Route knife drive belt (A) around pulley (B) and knife drive
box pulley (C).
NOTE:
Ensure the drive motor is fully forward, do NOT pry the belt
over the pulley.
3. Install V-belt (C) onto the pulleys.
4. Turn adjuster bolt (B) clockwise to tighten the V-belts. A
properly tensioned V-belt should deflect 4 mm (5/32 in.)
when 52–77 N (12–17 lbf) is applied at the midspan.
IMPORTANT:
To prolong the life of V-belts and drives, do NOT
overtighten the V-belts.
5. Tighten two bolts (A) on the endsheet.
6. Ensure the knives are timed before tightening the belt. For
instructions, refer to Adjusting Double-Knife Timing, page
172.
7. Slide idler pulley (A) into the slot on support bracket (B) to
take-up the slack in the timing belt.
NOTE:
Ensure lower nut (C) is as high as possible in the support
bracket (B) slot.
8. Tighten nut (D) to 212–234 Nm (157–173 lbf·ft).
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MAINTENANCE AND SERVICING
Figure 5.85: Left Side Shown – Right Side Similar
Figure 5.86: Knife Drive V-Belts
Figure 5.87: Knife Drive
169
C
A
C
B
C
D
B
B
A
A
Revision B