[1] – Remove snap rings (A) securing lift arms to rockshaft.
[2] – Remove locking pin (B) and flat washer securing position feedback rod (if so equipped).
[3] – Remove lift arms from rockshaft.
[4] – Ensure that right side rockshaft is clean. Hold internal arm (C) and tap rockshaft from housing.
[5] – Remove arm and attached pushrod from housing.
[6] –
Remove pressure relief valve from housing port (D). Loosely seal air nozzle to relief port, and inject low-pressure air to remove piston (E) from housing.
[7] – Inspect piston and cylinder surfaces for damage.
[8] – Inspect rockshaft bushings (F) for wear or damage. Remove bushings if replacement is needed.
[9] – Remove nut (G) and rate of drop/stop valve control shaft.
[10] – Thread a M4 screw (H) with washer into rate of drop/stop valve. Remove valve from bore.
[11] – Inspect valve seals. Replace O-ring (I) and seals (J) and (K).
[12] – Remove relief valves (L and M).
[13] – Inspect relief valves for damaged components.
