New design according to Service Bulletin: SB-1989-002. This design replaces the previous shim adjustable charge relief valve. This improvement changes the design of the charge relief valve poppet and plug.
Danfoss will offer this adjustable charge relief valve kit for sale as a service part. This kit can be used to service any vintage series 90 variable pump. Since the new and old style charge relief valves are interchangeable as an assembly, the old style parts will no longer be available as service parts.
Model affected: All 93-2xxx, 94-2xxx, 95-2xxx, and 96-2xxx pumps
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