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SJ30AJE, SJ30ARJE196274AF
Section 5 – Procedures Boom & Jib
13. Lift the riser back up slightly to take the pressure
off of the knuckle pins.
14. Remove the retaining bolt and washer from one
of the lower knuckle pins.
15. Use either a 3/8" threaded rod with a nut welded
on the end, or two 3/8" fully threaded bolts about
3" (7.5 cm) long and thread them into one or
both of the spare threaded holes on the pin
flange.
16. Turn the rod/bolts clockwise, which will start
forcing the pin out. Continue until the pin can be
pulled out the rest of the way by hand.
17. Place a temporary holding pin (part 207288) in
place of the original pin, and secure it using the
original bolt and washer. NOTE: This temporary
pin is necessary to provide enough clearance for
the master cylinder’s lower pin to be removed.
18. Repeat steps 14 through 17 with the opposite
pin. There will be more pressure on this pin, so
use the lifting device to adjust the boom slightly
as needed to make the pin easier to remove.
19. Lift the riser until the lower master cylinder pin is
accessible.
20. Remove the screw securing the pin, then use a
driver and mallet to tap out the pin.
21. Lift the riser up about 46 cm (1.5'), and place a
4x4 block of wood in the riser.
22. Carefully push the master cylinder forward, then
rotate it ¼ turn. Bring the cylinder down and out
through the gap in the riser.
23. Working one at a time, remove the T fittings from
the cylinder, and install port plugs in their place.
Working one at a time, remove the port plugs
from the new cylinder and install the T fittings
from the old cylinder. Cap the fittings with size
04 caps. Transfer the hose markings to the new
cylinder.
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