Reasons for the deterioration of dowty retarder oil and forming dead dowty retarder

How to use the hydraulic oil of the dowty retarder correctly has a great effect on the working efficiency of the dowty retarder and prolonging the service life. It also plays a significant preventive role in avoiding the formation of "dead dowty retarder" and ensuring driving safety.

In practical applications, the oil deterioration of the dowty retarder has the following reasons: ①It is mixed with impurities and moisture. After the oil is purchased, it is placed outdoors in the sun and rain for a long time. It is easy to mix impurities and moisture in the frequent opening of the lid to take the oil; secondly, the piston rod assembly is not completely disassembled and cleaned during indoor maintenance. The impurities mixed in the pressure regulating screw are brought into the new oil, causing the oil to be contaminated and deteriorated; in addition, during the use of the dowty retarder, due to the aging or falling off of the dust ring, it is easy to mix in moisture and impurities. ②The working temperature is too high. Through measurement, the highest temperature can reach 61C, so that it is easy to cause the oil to oxidize and generate precipitates and colloidal substances.

Due to the dowty retarderof the oil, the various performance indicators of the oil will change significantly. When the dowty retarder is serious, the over-flow hole will be blocked, which is equivalent to the speed valve plate is closed. At this time, the sliding cylinder cannot slide freely, and it is Or the operation of the caboose is more harmful.