New Holland CX720 Repair Manual page 65

DISTRIBUTION SYSTEMS - PRIMARY HYDRAULIC POWER SYSTEM
7. Carefully lift the connecting plate (1) from the header
lift valve (2).
8. Check all O rings for cuts, nicks or deformity. Re-
place as necessary.
9. Check mating surface of valve sections for nicks,
burrs, or other damage. Repair or replace as nec-
essary.
10. Inspect tie rods for straightness. Replace as neces-
sary.
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