Air Compressor Failure Analysis
First, oil leakage problem

Daily operations in the air compressor, air compressor often occur leakage of oil spill appearance there.
Air compressor oil leak causes:
1, seal off or seal leakage defects.

2, The spindle loosed cause oil seal leakage.

3, The interface leakage, inlet and outlet oil pipe loosed.

4, belt installed too tight leading to the main bearing wear.

5, casting or machining defects can also cause leakage of air compressor.

Air compressor oil leak in Diagnosis and Removal Method:

1, air compressor oil spills, to observe seal parts, check the seals have cracked, inner lip with or without cracking or flanging. One of the above situations should be replaced; check the seals and spindle combination of surface scratches and defects whether the existence of scratches and defects should be replaced. Check back to oil is smooth, poor oil return to crankcase pressure is too high cause seal leakage or loss, must ensure that the minimum diameter return pipe, and does not distort, does not bend, back to the oil smoothly. Check oil seal, box with the size, does not meet the standard to be replaced.

2, force moving spindle neck to check whether the gap is too large, too large gap should also replace the bearings and oil seals.

3, check the junction gasket seals, repair or replace seals; check into, and the box back to the oil joint bolts and tighten the screw.

4, air compressor leak check and adjust belt tightness, thumb press 10 mm is appropriate.

5, air compressor oil leakage, need to check the box casting or machining defects, repair or replacement of defective parts.

Second, thermal failure analysis

Daily operations in the air compressor, a long time because of overload operation of the air compressor air compressor overheating fault occurs.

Compressor overheating symptoms:

1, air compressor exhaust temperature is too high.

2, the running hot site.

Air compressor overheating cause of the malfunction:

1, loose valve or unloading valves do not work cause compressor overheating fault.

2, air brake system leaks cause severe overheating compressor failure.

3, operation site and the cylinder fuel supply shortage.

Compressor overheating Fault Detection and troubleshooting:

1, intake air pressure unloading loose when the check valve assembly, a card removal or replacement of the cleaning delay failure of parts. Check the exhaust unloading unloading valves are blocked or catching the failure to clean the repair or replacement parts, effectively exclude air compressor overheating failure;

2, check the brake system parts and piping;

3, poor lubrication between the piston and cylinder, the cylinder gap is too small or can lead to overheating, the event should check the situation, failure to repair or replace parts.

Third, abnormal noise failure analysis

In the course of daily use air compressor, air compressor often appear abnormal sound, such as: metal impact sound, even the percussion sound of abnormal sound of friction howling air compressor failure.

Compressor Fault abnormal sound:

1, connecting rod wear serious, connecting rod bolts loose, badly worn connecting rod bushing, spindle wear and tear or damage to produce serious crash;

2, belt too loose, active and passive belt groove produce air compressor skid caused by abnormal sound does not match;

3, air compressor does not run immediately after the fuel supply, air compressor abnormal sound of metal dry friction;

4 fixed bolts loose;

5, fastening nut loose gear, resulting in excessive backlash generated abnormal sound percussion air compressor;

6, piston top of a foreign body.

Compressor Fault Diagnosis and Removal Method abnormal sound:

1, abnormal sound when the air compressor, check the connecting rod, connecting rod bushings, main bearings are worn, torn or burnt, connecting rod bolt is loose, check the air compressor main oil path is smooth; proposed to replace badly worn or strain of the bearings, bushings, main bearings, connecting rod bolts tightened, aligned with the compressed air compressor into the hole; air to clear the main oil duct. Re-assembly, spindle bearings should be noted.

2, abnormal sound when the compressor to check the active and passive pulley groove is consistent, inconsistent, replace, and adjust belt tightness.

3, check the oil into the oil pressure, oil pipelines are damaged, blocked, pressure should be immediate enough to adjust, clean, replace the pipe failure; check the lubricant oil and impurities, compared with the standard, should be replaced immediately exceeded ; check the air compressor is oil, without oil should immediately conduct a comprehensive inspection.

4, check whether the compressor fixed bolts to fasten loose power and to give help to alleviate the abnormal noise compressor.

5, gear drive air compressor should also check whether the loose gear or gear installation with the case, tighten the nut loose nut, should be replaced with the problem.

6, clear the foreign body, help to alleviate the abnormal noise compressor.