https://easygen.org/download/ page offers you push button

routing you to https://easygen.org/legacy-product-replacement/ 

there you can enter part number or control description to find your obsolete product

as well this page routes you on this data base

https://wss.woodward.com/manuals/Legacy/Forms/AllItems.aspx

where you can download old product specification or Product Support statements PST's

This data base contains obsolete control products from Woodward Industrial controls (EGCP's, DSLC, MSLC, GCP's , SPM-D's,...) , Leonhard-Reglerbau AMGs, MFR's, ASG's and old  SEG Function Line controls like NC, NB, NP, NAC, PCM, PCL controls