New Holland CX720 Repair Manual page 147

4. Connect the hydraulic line fittings (1) to the stack
valve. Tighten the fittings securely.
5. Remove the caps and plugs from coupler fittings.
Connect the hydraulic quick couplers (1) (2) and (3),
to the feeder stack valve.
Start the engine and cycle the appropriate features
controlled by the feeder stack valve.
Check for proper operation of all functions of the
feeder stack valve.
Check all connections for leaks.
DISTRIBUTION SYSTEMS - HYDRAULIC COMMAND SYSTEM
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