EDP case drain filter-housing: Correct installation 737-3/4/500

When replacing the EDP case drain filter is it sometimes easier to remove the complete assembly and installing it after replacement of the filter. However pay attention on how you install the assembly, because there is a check-valve installed on the housing. The arrow on the housing must point from OUTBOARD to INBOARD. If the housing is installed reversed, (and that is possible, the arrow is then no longer visible) than the EDP is not cooled because there is no case drain flow present resulting in a failing hydraulic pump. And that happens only after a while, during the first flight or during taxi out and possible not during the first testrun/dry-motoring which was done during maintenance.


Sjap.nl uses cookies to use the content and ads for functions to analyze website-traffic. Sjap.nl also shares information about your usage on this site with our partners for social media, ads and analysis. By continuing to use this site, you agree to the use of cookies. More information

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

More information about our privacy policy and cookies, see the Privacy Policy & Cookies page.

Click here to read more about how Google uses data when you use our partners' sites or apps.