Nortrac XT20 Owner's Manual page 51

4.1.2
Maintenance for every 50 hours
(1) Perform all of the technical maintenance after every working shift.
(2) Check the tightness of the fan belt (press down the belt with your hand and measure the sag (15–20mm),
and make adjustments if necessary.
(3) Spread the grease lubricant on the electrode contact of the storage battery to prevent corrosion.
(4) Maintain the diesel engine according to the requirement of level 1 technical maintenance described in the
engine manual.
4.1.3
Maintenance for every 200 hours
(1) Perform all technical maintenance required for every 50 work hours.
(2) Fill lubricating grease according to Maintenance Table 4-1.
(3) Replace lube oil in the diesel engine oil pan and clean the oil pan and filter screen.
(4) Replace the engine oil filter element and replace engine oil.
(5) Replace the air filter element.
(6) Maintain the diesel engine according to the requirements of level 2 technical maintenance specified
in the engine manual.
4.1.4
Maintenance for every 400 hours
(1)
Perform all technical maintenance after 1-hour running.
(2)
Check the oil level of the transmission case and add if necessary.
(3)
Check the oil level of the front drive axle and add if necessary.
(4)
Check and adjust the tightness of the toe-in on the front wheel and the front wheel bearing and conduct
adjustment as necessary. Replace the lubricating oil in the front wheel hub.
(5)
Check the free running angle of the front ires and conduct adjustment if necessary.
(6)
Clean and maintain the hydraulic system filter.
(7)
Maintain the diesel according to the requirement of level 3 technical maintenance described in the engine
manual.
4.1.5
Maintenance for every 800 hours
(1)
Perform all technical maintenance after 1-hour running.
(2)
Change the hydraulic system oil.
(3)
Flush cooling system and radiator. Replace fluids.
(4)
Clean the transmission case and change the lubrication oil when the tractor is warm.
(5) Clean the oil suction filter screen of the hydraulic system, check the cleanliness of the oil, rinse the internal
cavity of the lift housing with solvent and drain, if necessary, and change the engine oil.
(6) Check and adjust the valve clearance of the engine.
Maintenance Instruction
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