Jinma Tractor Introductory User Guide July 2007 Page 27
1. Carry out the maintenance items in the Shift Maintenance schedule.
2. All grease fittings should be wiped clean and greased.
3. Check air filter and clean or replace as needed.
4. Check the fan belt tension. When pressing the middle part of the longer side of the belt, the belt
should drop about 1/2 to 3/4 inch with a light to medium push with your finger. Adjust the belt
tension if necessary.
5. Check the hydraulic fluid level in the transmission box and the front drive axle. Refill with
hydraulic fluid if necessary. Also check to see if the hydraulic fluid is showing signs of being a
milky white color. This implies water getting into the hydraulic system and maintenance of
seals or other water sources should be carried out (and change the hydraulic fluid).
6. Lubricate control cables and pivot points as needed.
7. Check the color and grittiness of the engine oil. Change oil and filter if needed.
250 Hour Maintenance (Every 250 Hours) (If you operate your tractor less than 125 hours per year, you may
want to consider service every year.)
1. Complete all Shift and 50 Hour maintenance items.
2. Changing the hydraulic fluid and hydraulic fluid filter.
3. Replace the fuel filter (cartridge). If the filter is very dirty, inspect the fuel tank to determine if
it need cleaning.
4. Change the engine oil and oil filter. (Note: If the oil is very dirty, you may want to flush the
engine oil sump and clean the oil pump strainer. This requires removing the oil pan and
inserting a new gasket when reassembling.)
5. Check the free travel of clutch pedal and brake pedals. Adjust if necessary. (See Jinma
manual.)
6. Check battery and terminals for corrosion and clean if necessary.
500 Hour Maintenance (Every 500 Hours) (If you operate your tractor less than 125 hours per year, you may
want to consider the 500 Hour Maintenance every 4 years of so.)
1. Complete Shift, 50 Hour and 250 Hour maintenance items.
2. Check and adjust inlet and exhaust valve clearance of the engine.
3. Drain Transmission fluid. Flush transmission box. Replace with new hydraulic fluid.
4. Check and adjust front wheel toe-in (See Jinma manual).
5. Check the free travel of the steering wheel; free travel should be less than 15 degrees. Check
the Hydraulic Fluid in the Steering Gear and fill if necessary.
6. Add fuel injector cleaner to the diesel fuel Every 250 - 500 hours. If the engine is not running
smoothly, you may need to check and adjust fuel injection pressure and injector atomization at
the 500 hour check.
7. If the cooling fluid is more than two years old, it is recommended you replace if with new water
and anti-freeze.
8. If there are problems with the operation of the hydraulic system (slowness in response or less
working capacity), then you may want to clean the filter of hydraulic lifter arms and flush the
50 Hour Maintenance, change the engine oil and filter, change the
hydraulic fluid in the hydraulic system and the hydraulic oil filter, change the fuel filte
and check the air filter and change if needed.
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