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1. Shut down the windrower, and remove the key from
the ignition.
2. Open the endshield. Refer to
.
3. Loosen the two bolts (A) securing the motor assembly
to the header endsheet.
4. Turn the adjuster bolt (B) counterclockwise to loosen
and remove the two V-belts (C).
Figure 5.77: Knife Drive V-Belts
Installing Timed Drive V-Belts
NOTE:
Install new V-belts in matching pairs.
1. Shut down the windrower, and remove the key from
the ignition.
2. Install the V-belts (C) onto the pulleys.
NOTE:
Ensure the drive motor is fully forward, do
NOT
pry the belts over the pulley.
3. Turn the adjuster bolt (B) clockwise to tighten the
V-belts. A properly tensioned V-belt should de
fl
ect
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.
4. Tighten the two bolts (A) on the endsheet.
5. Close the endshield. Refer to
.
6. Check the tension of the new V-belts after a short run-in
period (about
fi
ve hours).
Figure 5.78: Knife Drive V-Belts
Removing Timed Knife Drive Belt
The timed knife drive belt removal procedure is the same for both sides of the header.
WARNING
To avoid bodily injury or death from unexpected startup of machine, always stop engine and remove key
before making adjustments to machine.
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