Maintenance
4-28
HP6A Manual
17 Remove pivot block and pivot pin.
18 Remove old cylinder.
19 Install new cylinder.
20 Install pivot pin and pivot block. Leave bolts loose.
21 Place upper pivot clamp assembly back on cylinder shaft.
22 Raise cylinder shaft to full up position.
23 Attach pivot clamp assembly to rocker arm by installing upper pivot blocks. Leave bolts loose.
24 Adjust height of cylinder trunion, loosen set screw, and tighten clamping bolts.
25 Tighten bolts for upper and lower pivot blocks.
26 Move rocker arm up and down, checking for freedom of movement. If movement is free and
smooth remove pivot block bolts individually, apply Loctite and tighten.
27 Install cylinder fittings, upper and lower air lines, and oil line.
28 Install lower sensor, target, and bore length gauge.
29 Install clamp cylinders, lever arms, and cross bar.
30 Install actuation bolt and lock nut. Adjust by following procedure located in the maintenance
section of this manual.
31 Install carriage cover plates.
32 Install top rocker arm cover.
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