（3）丈量液压泵的压力。若压力偏低，则进行调整，加压力仍调不上去，则阐明液压泵严峻磨损。经查看丈量液压泵的压力仅为5－7MPa，显着低于液压体系的额外压力。拆开液压泵后发现轴套已磨损，低压区泵壳内壁被齿轮严峻“扫模”，侧壁也稍有磨损。由此可见，形成动臂带载不能进步的主要缘由为：a.液压泵严峻磨损。在低速作业时泵内走漏严峻；高速作业时，泵压力稍有进步，但因为泵的磨损及内泄，容积功率明显下降，很难达到额外压力。液压泵长时间作业又加重了磨损，油温升高，由此形成液压元件磨损及密封件的老化、损坏，丢失密封才能，液压油蜕变，***终导致毛病发作。R901050288PGF3-3X/032RN07VM-A447R901036894ABSKG-20AL9/PGF1-2,2/90L/L/1/S02J011AR901029605PGF2-2X/013LN01VM-A279R901021469PGF1-2X/1,7LA01VP1-A340BR901018829PGF2-2X/016RJ01VU2R900HA5596ABHAG-0100RS/PGF2-006/112M/002F433AR900984300PGF2-2X/019LJ20VU2R900984277PGF2-2X/013LL20VMK-A385R900984264PGF3-3X/025LN20VM-A262R900984249PGF3-3X/032RS07VMR900984240PGF2-2X/016LL01VMR900984214PGF2-2X/006RL01VMK-A385R900984213PGF3-3X/032LJ07VU2R900984209PGF3-3X/025RE07VE4-A384R900984206PGF2-2X/016RA01VP2PGH4-2X/032RE11VU2力士乐REXROTH齿轮泵德国PGH齿轮泵rexroth齿轮泵力士乐***9510290331AZPF-12-025RPC12MB-SO5489510290332AZPF-12-028RPC12MB-SO5489510290333AZ-P-FF-12-019/014-RRR12MB-S0040)