(1) check traces of oil leakage to trace oil spill spots. If the oil leakage part is the valve body, the oil distributor, the stator and the back cover joint, check the tightness of the bolt with the hand first. If the bolts are too loose and no longer leak after tightening, then the trouble of "oil leakage of the excavator steering gear" is here.
(2) if the bolt is not loose, all bolts on the rear cover can be loosened and tightened in the order of crossover. If no oil leakage is observed, the bolt is not tightened in the prescribed order.
(3) if the bolt is tightened in a prescribed order, the oil is still leaking, indicating that there is a dirty or sealed l cutting hardening, aging and damage in the combination surface. At this time, the steering gear is decomposed, such as the dirty material should be cleaned, and the washer at the limit bolt should be checked, such as uneven, or replacement of the washer.
