SkyTrak 6042 Service Manual User Manual

Page 65

3.19

Model 6042 Legacy

Origin 7/02

Boom

27. Use the hoist to remove the outer boom from the

frame. Position the outer boom on a hard, flat
surface. Block the boom as required to allow
removal of the extend/retract cylinder from the
underside of the boom.

28. Use a hoist and slings to support the extend/retract

cylinder. At the base end of the cylinder, remove a
retaining ring (Fig. 3-44, 1) from one side of the
cylinder base end pin (2). Use a brass punch and a
rawhide hammer to remove the base end pin from
the mounting ears on the outer boom.

29. Inspect the pin (Fig. 3-44, 2) for damage. If the pin is

damaged, it should be replaced. Retain the retaining
rings for reassembly.

Figure 3- 44 Extend/Retract Cylinder Base End Pin

30. Lower the base end of the extend/retract cylinder

and remove the rod end of the cylinder from the
retainer at the front of the boom. Place the extend/
retract cylinder on a clean, flat surface.

31. At the front of the outer boom, remove the elastic

locknut (Fig. 3-45, 1) holding the rubber bumper (2)
to the extend/retract cylinder retainer (3). Discard the
elastic locknut.

32. Inspect the rubber bumper (Fig. 3-45, 2). If it is in

good condition, the rubber bumper can be reused. If
the rubber bumper is showing signs of cracking or
deterioration, it should be replaced.

Figure 3-45 Rubber Bumper

33. Inspect the bearings (Fig. 3-46, 1). If the bearing

rotates freely inside the outer race, the bearing can
be left in place. If the bearing is damaged it must be
replaced

34. Remove the self-aligning bearings (Fig. 3-46, 1)

from the lift/lower cylinder mounts (2) and the slave
cylinder mounts (3).

Figure 3- 46 Lift/Lower and Slave Cylinder Bearings

MA9910

MA7761

MA9920