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435/485/535
2-7
Break-in Periods
The first 50 hours of operation are the most critical for
insuring long and dependable tractor life. Please carry
out the following procedures:
1. Review the tractor Pre-delivery Checklist contained
in the assembly manual with your dealer. Be sure
all applicable items on the sheet have been
checked.
2. Check all fluid levels and be sure all systems are
filled with the correct fluids for your operating
conditions.
3. Check the engine, transmission, and hydraulic oil
levels hourly during the first 10 hours of
operation.
4. Inspect the tractor for leaks hourly during the first
10 hours of operation.
5. Torque the wheel bolts to 715 N
·m (525 ft-lbs)
after the first hour of operation and after every three
hour of operation for the first day. Re-tighten to the
specified torque daily until wheel hardware
maintains the specified torque.
6. Operate the engine at 3/4 load as much as possible
during the first 50 hours (3/4 load is approximately
one gear lower than would be normally used to pull
a matched load).
7. Do not operate the engine at idle speed or maximum
horsepower for more than 5 minutes at a time for
the first 50 hours.
8. Check the frame pivot pin, drag link and steering
cylinder cap screw torques after the first 10 hours
of operation. Torque the frame pivot pin to 1365
N
·m (1000 ft-lbs) and the remaining pins to 175
N
·m (130 ft-lbs).
9. Have your dealer complete the “First 50-Hour
Service” checklist at the end of this manual.
Engine Break-in
The Cummins engine used in Buhler Versatile 4WD
tractors has been run on a dynamometer before
installation but not enough to be considered broken
in.
1. Do not operate the engine at more than 3/4 load
for the first 24 hours of operation. Full load should
only be held for short intervals during the next 24
hours of operation.
2. Check the oil level every 8 to 10 hours for the first
100 hours of operation.
3. Follow the recommendations outlined in the
Cummins manual supplied with your tractor.
Section 2 - General Information
Break-In Period