1毛病表象及缘由剖析呈现空载大油门时动臂缓慢起升、重载时不动作的毛病表象。该机液压体系为单泵串联回路。我们在修理时从以下三点查找毛病缘由，并对体系进行了改善，现介绍如下。（1）查看动臂油缸的内漏状况。***简单的办法是把动臂升起，看其是不是有显着的自在下降。若下落显着则拆开油缸查看，密封圈如已磨损应予替换。（2）查看操作阀。首要清洁安全阀，查看阀芯是不是磨损，如磨损应替换。安全阀设备后若仍无变化，再查看操作阀阀芯磨损状况，其空隙运用极限通常为0．06mm,磨损严峻应替换。R901067539PGF2-2X/006RA01VP2-A381R901067272ABUKG-07-12/00K008/PGF2-19/90/S0160SO24R901055744ABHAG-0120SSO/PGF3-025+GF1/132M/014B975AR901054759ABPBG-PGF3-025E4/BG160/LR901050288PGF3-3X/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)