Technical Maintenance During Tractor Run-In; Technical Maintenance After Tractor Run-In - Belarus 922.6 Operator's Manual

ATTENTION: IT IS OBLIGATORY THAT YOU CARRY OUT TRACTOR RUN-IN
FOR 30 HOURS! LOAD THE TRACTOR UP TO 80 % OF ITS RATED POWER BEFORE
THE FIRST TECHNICAL MAINTENANCE (TM-1) (125 HOURS)!
Start the engine. Let the engine run at idle speed for five minutes with gradual in-
crease of the rotation speed up to 1600 rpm, then run in under load for 30 operation hours.
While carrying out a 30-hour run-in, follow the instructions below:
- constantly inspect gage indications, operation of lubrication system, cooling system
and power supply system. Control levels of oil and fluids in refill capacities;
- check outer fastening links for tightness and tighten them regularly;
- do not overload the engine, avoid engine smoking and speed decrease. The fea-
tures of overload are sharp decrease of speed, smoking and absence of engine reaction to
increase of fuel feed. Operation at high gear under load results in excessive wear of friction
parts of the engine;
- tractor operation at lower gear under small load and with increased speed of the
engine will result in fuel overconsumption. The correct selection of gear for each specific
condition of operation ensures fuel economy and reduces engine wear;
- avoid prolonged engine operation without load in a mode of max. or min. speed of
the engine;
- for correct break-in of the clutch friction parts during the run-in process, engage the
clutch more often and more smoothly.
ATTENTION: EXHAUST GASES HAVE OUTPUT TEMPERATURE FROM 500 TO
600 °С, THEREFORE DAMAGE OF PAINT-AND-VARNISH COATING OF EXHAUST MANI-
FOLD AFTER FIRST ENGINE OPERATING HOURS IS NOT A SIGN OF MALFUNCTION IN
ENGINE OPERATING PROCESS.

3.4.4 Technical maintenance during tractor run-in

After the first tractor operation hour check tightening of retaining nuts of rear wheels
to the hub, retaining nuts of front wheels to FDA gear group flanges and retaining nuts of
the front wheel disks to the rim brackets. Then inspect the wheel tightening every eight
hours during the run-in.
During the run-in process regularly carry out operations on shift-time technical
maintenance according to the instructions specified in section 5 "Maintenance" of this man-
ual.

3.4.5 Technical maintenance after tractor run-in

After the tractor run-in, do the following:
- carry out shift-time maintenance operations;
- inspect and wash the tractor, clean the cab;
- make sure visually, that pipelines, aggregates of lubrication, feeding and cooling
and SCR systems are leakless;
- listen to the operation of all tractor components;
- check tightening of retaining nuts of rear wheels to the hub, retaining nuts of front
wheels to FDA gear group flanges and retaining nuts of the front wheel disks to the rim
brackets;
- tighten two lock nuts M27x1,5 (with left and right thread) of the steering link tube
with a torque of 100 to 140 Nm and two crown nuts M20x1,5 of the steering link ball pins. To
tighten the crown nuts, remove the cotter pin first, tighten each crown nut with a torque of
100 to 140 Nm, then turn each crown nut until the nearest notch on the nut coincides with a
hole in the ball pin and then fasten with a cotter pin.
- check and if necessary, tighten outer threaded links;
- drain condensate from the pneumatic system receivers;
- drain sediment from fuel tanks and from the fuel coarse filter;
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922.6-0000010 OM