[1] – Insert new rockshaft bushing(s) (A) if removed. Press bushings to a depth (B) of 6.4 mm (0.25 in.) below outer edge of rockshaft bores.
[2] – Install new O-ring (C) and seal (D) to piston .
[3] –
โNOTE:
Fully open the rate of drop/stop valve or remove the pressure relief valve to allow air trapped behind the piston to escape.
Lubricate piston assembly (E) and rockshaft housing bore. Install piston to bore, pushing piston below bottom of bore.
[4] – Lubricate end of cylinder rod (F). Place rod and arm inside rockshaft housing, with rod inserted into piston.
[5] – Lubricate rockshaft and housing bushings.
[6] – Partially install rockshaft through left side of housing and into internal arm.
[7] – Match alignment marks (G) to index arm and rockshaft. Install shaft through arm and opposite shaft bushing.
[8] – Reinstall relief valve if removed for piston installation.
[9] – Install O-ring (H) to left and right sides of shaft. Press O-rings into housing bores.
[10] – Install flat washers (I) to left and right side of rockshaft.
[11] – Install left and right rockshaft arms to shaft with alignment marks (J) matched.
[12] – Secure arms with snap rings (K). Install left snap ring to inner rockshaft groove.
[13] – 1025R Only: Install position feedback rod (L) to feedback control linkage if so equipped. Secure rod with washer and secure pin.
[14] – Install relief valves (M and N). Tighten to specification.
[15] – Lubricate Rockshaft control valve (O) with hydraulic oil and insert valve into bore.
[16] – Install new O-ring (P) to rate of drop/stop valve stem nut.
[17] – Hold nut and turn valve stem until nut is located next to stop (Q).
[18] – Install Rockshaft Control valve stem to housing and tighten valve nut to specification.
