John Deere 1600 Blade engagement problem

[Tammy Quail]

Need help on John Deere 1600 series 2 WAM Please. The front Blades just barely move and the wing blades do not move at all. All other hydraulic functions work such as deck lift, and forward/reverse. The lights in the side panel indicate that the deck is engaged. TIA

 

[beenthere]

Welcome to TBN

Thinking you might need to track down some hydraulic line pressures to separate a problem.
Might mean doing some plumbing work to isolate the different parts of the system and building or finding a pressure gauge.

Assume you have already changed out hyd. oil filters that are involved.