TDER Lesson: How to maintain a forklift

Jun 06,2024

详情图-TDER Lesson: How to maintain a forklift.jpg

Daily maintenance

1.To clean the dirt and soil on the forklift, the key parts are: fork rack and gantry slide, generator and starter, battery electrode column, water tank, air filter.

2.Check the tightening of various parts, focusing on: fork support, lifting chain tightening screws, wheel screws, wheel fixing pins, brakes, steering screws.

3.Check the reliability and flexibility of the steering gear.

4.Check the leakage, focusing on: each pipe joint, diesel tank, oil tank, brake pump, lifting cylinder, tilt, cylinder, water tank, water pump, engine oil pan, torque converter, transmission, transaxle, main reducer, hydraulic steering gear, steering cylinder.

5.Tire pressure check: insufficient should be added to the specified value to confirm that there is no air leakage. Check whether the tire ground and side are damaged, and whether the axle is deformed.

6.Brake fluid, water check: check whether the brake fluid is within the scale range, and check whether the brake pipe is mixed with air.

When adding brake fluid, prevent dust and water from mixing. When adding water to the tank, use clean tap water, if using antifreeze, the same antifreeze should be added. When the water temperature is higher than 70C, do not open the tank cover. When opening the cover, pad a thin cloth and twist the tank cover without gloves.

7.Engine oil, hydraulic oil, electrolyte check: first pull out the oil scale, wipe the ruler head, insert it and then pull out to check whether the oil level is between the two scale lines. The oil level in the working tank should be between two calibration lines; Too little oil will mix air into the pipeline, and too much will overflow from the cover plate. Battery point solution liquid should also be between the upper and lower scale lines, insufficient to add distilled water to the top line.

8.Brake pedal check: step on each pedal to check whether there is abnormal sluggishness or blockage.

9.Belt, horn, light, instrument and other inspection: check whether the tightness of the belt meets the regulations. No adjustment allowance or damage cracks, need to be replaced; Horn, light, instrument should be normal and effective.

10.Remove oil filter sediment.


Level 1 technical maintenance

Follow the "Routine maintenance" project and add the following work.

1.Check the cylinder pressure or vacuum degree.

2.Check and adjust the valve clearance.

3.Check whether the thermostat works normally

4.Check whether the multi-way reversing valve, lifting cylinder, tilt cylinder, steering cylinder and gear pump work normally.

5.Check whether the shift work of the transmission is normal

6.Check and adjust the gap between the brake disc and the brake drum of the foot brake.

7.Replace the oil in the oil pan, check whether the crankcase ventilation nozzle is intact, and clean the oil filter and diesel filter element.

8.Check whether the engine and starter are firmly installed, and whether the connector is clean and firm, check whether the carbon brush and commutator are worn.

9.Check the tightness of fan belt.

10.Check whether the wheel installation is firm, whether the tire pressure meets the requirements, and remove the debris embedded in the table.

11.Due to maintenance work and disassemble parts, when reassembly to carry out forklift road test.

(1) Braking performance under different degrees should be free from deviation and snaking. On steep slopes, when the hand brake is tightened, it can stop reliably.

(2) Listen to the engine in acceleration, deceleration, heavy load or no-load operation, there is no normal sound.

(3) After a road test, check the brake, transmission, front axle housing, gear pump for overheating.

(4) The fork will lift speed is normal, there is no shaking.

12.Check whether the diesel tank oil inlet filter is blocked and damaged, and clean or replace the filter.


Level 2 technical maintenance

In addition to the maintenance of the items according to Level I technology, the following work has been added:

1.Clean the oil tank, filter and pipeline, and check whether there is corrosion, crack, do not use fiber yarn head, cloth wipe after cleaning.

2.Clean the torque converter, gearbox, check the wear of parts, and replace the new oil.

3.Check the drive shaft bearing and change the direction of the universal joint cross shaft if necessary.

4.Check the tightness of all parts of the drive axle and whether there is oil leakage, dredge the porosity. Remove and check the main reducer, adjust the bearing axial clearance, add or replace lubricating oil.

5.Disassemble, adjust and lubricate the front and rear wheels, and carry out half-shaft transposition.

6.Clean the brake and adjust the friction gap.

7.Clean the steering gear and check the free turning momentum of the steering disc.

8.Disassemble and clean the gear oil pump, pay attention to check the wear of the gear, housing and bearing.

9.Disassemble the multi-way valve, check the gap between the valve stem and the valve body, and do not disassemble the safety valve if necessary.

10.Check whether the steering joint is damaged and cracked, the coordination between the steering bridge kingpin and the steering joint, and remove the wear of the longitudinal and horizontal tie rod and the joints of the steering arm.

11.Remove the tires, brush and paint the rims, check the inner and outer tires and cushion belts, change positions and inflate according to regulations.