The characteristic of breakdown of system of project machine hydraulic pressure, system of hydraulic machinery transmission is main by hydraulic pump, control a powerful person, change quadrature implement, the composition such as transmission and a powerful person of gearshift of dynamical shift gears, its breakdown is behaved normally to walk faint or joint of hydraulic pressure clutch is undesirable. System of equipment hydraulic pressure is main by hydraulic pump, control motor of a powerful person, hydraulic pressure and hydraulic pressure crock are comprised, main show is its breakdown to walk motorly or circumgyrate of piston of crock of faint, hydraulic pressure extend and retractile and logy. The common characteristic of breakdown of these two kinds of systems is: Systematic pressure is insufficient.

The spot of breakdown detects with diagnose


(1) the preliminary check-out of the spot and diagnose

Make a thorough investigation of according to breakdown phenomenon concerned circumstance, contrast the place of breakdown of generation of analysis of chart of hydraulic pressure system and initial account, cannot ignore the reason that looks very simple, cannot tear open blindly in disorder more, lest cause needless loss. The following measure should be swept to undertake in particular check out procedure.

① understands a situation to the driver, to the condition of the machine when breakdown arises, sound should become detailed knowledge, avoided fussily, change easy embarrassed. Be like fork-lift truck of a 966D, in the discovery after changing oil to transmission the machine walks faint. Change quadrature implement oil is lukewarm exorbitant. Via checking discovery, what add mistake of transmission oily date, in made clear after the cause that causes trouble, breakdown is able to eliminate quickly.

② has necessary particular operation. Sometimes, the driver is not clear to the causal allegation of machine error, cause breakdown to diagnose difficulty, undertake necessary field work nots benefit at this moment shallow.

The examination that oleaginous, oil measures ③ . This content looks be like simple, the company is applied rise to often be ignored however. Fork-lift truck of consistent stage 966D (its walk the orgnaization is system of transmission of hydraulic pressure force) , when the driver has a holiday, already put transmission oil. When the assistant after waiting for building site to remove will drive, discover the machine cannot walk, thinking formerly was to give big trouble, but maintenance technician is made only in the spot by listened to dipstick of sound, examination to solve a problem, avoided the happening of important matter reason. Be like again, a day establishs EX220-2 grab, discover after repairing hydraulic pressure crock hydraulic pressure oil is insufficient, and the second birth that the hydraulic pressure oil that the spot purchases abstracts for indigenous method is oily, oleaginous pollution was caused after add adds gasoline tank. Degenerative and bubbly, cause machine start faint, change the breakdown after hydraulic pressure is oily is able to eliminate. Accordingly, right oleaginous, the examination of oily quantity must cause enough attention; Will burn out otherwise hydraulic pump, attaint transmission system.
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