Knife Drive Belt; Single Knife And Double Knife Untimed - MacDon D65 Operator's Manual

Adjusting Hold-Downs on Headers with Stub Guards
To adjust the clearance between the hold-down and knife
for all stub guards, follow these steps:
1. Torque nuts (A) to 35 ft·lbf (46 N·m).
2. Turn the adjuster bolts (B) as required. Using a feeler
gauge, clearance from hold-down to knife section
should be:
• 0.004–0.016 in. (0.1–0.4 mm) at guide tip (C)
• 0.004–0.040 in. (0.1–1.0 mm) at rear of guide (D)
3. Torque nuts (A) to 53 ft·lbf (72 N·m).
4. After adjusting all hold-downs, run header at a low
engine speed and listen for noise due to insufficient
clearance. Insufficient clearance will also result
in overheating of knife and guards.
as necessary.

6.6.8 Knife Drive Belt

Single Knife and Double Knife Untimed

Removing Knife Drive Belt On Single Knife Headers And Double Knife Headers With Non-Timed Drives
This procedure covers how to remove the knife drive belt on single knife headers and double knife headers with
non-timed drives.
NOTE: Procedure is the same for right-hand side
of the non-timed double knife header.
1. Open endshield. See
2. Loosen the two bolts (A) that secure the motor
assembly to header endsheet.
3. Loosen the tension on the belt by turning the tensioning
bolt (B) counterclockwise. This will loosen the belt
attached to the knife drive box.
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MAINTENANCE AND SERVICING
Re-adjust
Opening Endshields, page
Figure 6.45
A - Nuts
C - Clearance at guide tip
37.
Figure 6.46
149
B - Adjuster bolts
D - Clearance at rear of guide
Rev. C