MacDon 922 - Manual (Page 20)

Form # 46620 Issue 01/06 18
OPERATION
BREAK-IN PERIOD
1. After attaching header to windrower tractor for
the first time, operate the machine slowly for 5
minutes, watching and listening FROM THE
OPERATOR'S SEAT for binding or interfering
parts.
CAUTION: Before investigating an
unusual sound or attempting to
correct a problem; shut off engine,
engage park brake and remove key.
2. Check all belts after 5 hours operation for initial
stretch. Tighten as necessary. (See
Maintenance/Service section.
Continue to check the belts periodically for the
first 50 hours.
3. Tighten any loose hardware after 5 hours
operation. See Specifications section for
recommended torque’s.
4. Tighten the bottom and side wobble box
mounting bolts (C) after 10 hours operation
and every 100 hours thereafter. Torque to 200
ft.lbs. (270 N
⋅m), starting with the side
mounting bolts.
5. Change wobble box lubricant after 50 hours
operation and every 1000 hours (or 3 years)
thereafter. See Maintenance/Service section.
6. Until you become familiar with the sound and
feel of your new header, be extra alert and
attentive.
TIGHTEN WOBBLE BOX MOUNTING BOLTS