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Maintenance procedures of air compressor for vehicle
Author: 黄色电影      Release Date:2013/9/25      View Count:2689
 

Maintenance vehicle air compressor, maintenance personnel familiar with the equipment to technical documents and relevant technical data, to understand theequipment structure, performance and assembly data, then the following nine steps:

The first step: machine for cleaning and inspection.

Step second: remove the cylinder head screw plug, check whether the oil flow, withcompressed air blowing through the airway and joint.

Step third: check valve and valve seat sealing sheet, when necessary, grinding or replacement.

Step fourth: check the tightness of the piston ring. Speed of 900~1 000 R / min, 35 L of storage tank volume within 8 min pressure not up to 0.7 MPa. into the reservoir oilis more than 3 mL / h, said piston ring sealing ability is too low, should be overhauled.

The fifth step: measuring the clearance between the piston and cylinder wall, such as more than O.2 mm, cylindricity deviation exceeds 0.1 mm, roundness deviation is more than 0.05 mm. should be boring cylinder and piston, oversize piston ring. If the wear is not serious, only new piston ring. Fit the piston ring when the slope should beupward, ring split staggered, two adjacent ring opening position not corresponding, to avoid leakage.

The sixth step: check and scraping with the connecting rod bearings, oil in placeshould be flexible rotation, no shake gap.

The seventh step: maintenance of piston pin. Fit the piston pin and the connecting rod bushing, not add oil, with the thumb can easily push; with the piston pin and therequirements, with a wooden stick gently knocks.

Step eighth: check the cylinder cover is warping or groove, when necessary, on theplatform with the sand valve grinding. Joint plane of the cylinder block and cylinder head, with a ruler measuring roughness deviation shall not exceed 0.05 mm. Cylinder head bolt tightening torque is 12. The 17 N.m. fastening should cross the two or threeevenly tightened.

Step ninth: remove the dirt on the surface of the exhaust valve, the valve should bereplaced parts excessive wear and tear.

 
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