Tractor Break-In - Nortrac XT20 Owner's Manual

2.15 Tractor Break-In

Before using, the tractor should run for a certain period with proper lubrication, at a certain rpm and without a
full load. After the warm up period, the tractor should be checked and adjusted. This period of time is called
running-in.
2.15.1 Preparations prior to break-in
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During break-in, technical maintenance per shift and per 50 hours should be made on the tractor. See
Operation Manual 4 Maintenance.
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Apply emergency brake.
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Check and tighten the bolts, nuts and screws outside the tractor.
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Fill lube grease into the grease fittings of the front wheel hub and front axle. Check the oil levels in the oil
pan, drive train, hydraulics, front drive axle, central drive and final drive. If not adequate, fill them
according to the specification.
•
Fill the diesel fuel and coolant to specifications.
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Check the tire pressure.
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Check the electrical circuits.
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Lubricate all grease fittings.
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Put the operation handles (PTO, transmission, hydraulics) in neutral.
2.15.2 Engine break-in without a load
Perform idle running-in for 15 minutes. Start the engine according to the sequence specified in the "Diesel
Engine Operation & Maintenance Instructions", and run the engine in a sequence at low speed first, then at
mid-speed and finally at high speed (5 minutes each).
During the idle break-in, check the working conditions of engine, and the hydraulic oil pump. Observe if there
is abnormal operations and sounds. Check for any water, oil or fuel leakage. Check the instrumentation. When
any abnormal conditions occur, stop immediately and troubleshoot. Repeat break-in procedure.
The following break-in cannot be started until the engine is working normally.
2.15.3 Power take-off (PTO) shaft break-in without a load
The engine throttle control handle is set at the medium position, and the engine runs at medium speed. Set the
PTO shaft at low speed and high speed for 5 minutes respectively, then checked for any abnormalities. The PTO
shaft should be in the neutral position after break-in.
2.15.4 Hydraulic system break-in
Start the engine and run it with the throttle in the middle power position. Operate the handle of distributor and
lift and lower the suspension mechanism several times. Install implement (a piece of farm machinery or similar)
on the suspension mechanism, run the engine on the throttle position and operate the distribution handle to
make the suspension mechanism lift up and down 20 times. Check that the hydraulic suspension mechanism
can be fixed at the highest position, at the required position and check for the lifting time and leakage.
With the tractor stationary, run the engine at low and high speed, and turn the steering wheel to the left and to
the right smoothly 10 times in each direction. While turning the wheel, listen for any sounds and smooth
operation.
Operation Description
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