Symptom: When the engine is running and the air compressor is inflating the air tank, the air pressure gauge indicates that the air pressure does not reach the starting pressure value.
Cause of failure:
1, the barometer failed.
2, Air compressor and the transmission belt between the engine is too loose or slippery or air compressor to the pipeline between the gas storage tank to break or joint leakage gas.
3, oil water separator, pipeline or air filter deposits are too much and blocked.
4, Air compressor Exhaust valve plate is not tightly sealed, spring is too soft or broken, Air compressor cylinder head bolt loose, sand hole and cylinder head lining The pad is broken and leaks.
5, Air compressor The cylinder liner and the piston and piston ring are worn out and even leaking.
Fault diagnosis and elimination method:
1, observe the barometer, if the indicated pressure is insufficient, the engine can be run at medium speed for several minutes, the pressure still does not rise or rise slowly, when the brake pedal is depressed The deflation sound is very strong, indicating that the barometer is damaged. At this time, the barometer should be repaired.
2. If the above test has no deflation or venting sound, check if the air compressor belt is too loose, from air compressor to the storage Whether the gas tank, the intake valve of the control valve, and the joint are loose, broken or leaking.
3. If the air compressor does not inflate the gas storage tank, check if there is too much dirt in the oil water separator and air filter and the pipeline, and if it is blocked, it should be blocked. Remove dirt.
4, after the above inspection, if the cause of the failure is still not found, it should be further checked whether the exhaust valve of the air compressor is leaking, whether the spring is too soft or broken, and the cylinder head has No blisters, liner damage, replacement or repair of damaged parts based on the faults found.
5, check air compressor cylinder sleeve, piston ring is excessive wear.
6, check and adjust whether the installation direction of the unloading valve is consistent with the direction of the labeling.
Label [The cause of insufficient air pressure in air compressor and its solution] [What to do if the air pressure of screw air compressor is insufficient]
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