SkyTrak 6042 Service Manual - Manual (Page 74)

Boom
3.28 Model 6042 Legacy Origin 7/02
45. Make sure the retract chain has been inspected
before installing it in the outer boom. Refer to
Section 3.4.1, “Boom Chain Inspection.”
46. Inside the rear of the outer boom, slide the threaded
clevis end (Fig. 3 -65, 1) of the retract chain down
the right side of the boom. Guide the threaded part
of the clevis out through the hole in the tab (2) on the
bottom of the outer boom. Pull threaded part of
clevis all the way through the tab.
47. Coat the entire threaded portion of the clevis
(Fig. 3-65, 1) with multi-purpose grease. Install one
3/4" flat washer (3), saved, onto the threaded clevis
and assemble a new 3/4-16 elastic locknut (4).
Thread the nut onto the clevis until the threads are
flush with the top of the nut.
Figure 3-65 Retract Chain and Hardware
48. At the front of the outer boom, reassemble the lower
outside wear pads (Fig. 3-66, 1) and wear pad
spacers (2):
a. Place the wear pad inserts (Fig. 3-66, 3) into the
cavities in the wear pad. Be sure the inserts are
seated completely in the cavities.
b. Place a wear pad (Fig. 3 -66, 1) and a spacer (2)
into the outer boom with the hole offset of the
wear pad toward the middle of the boom. Align
the holes in the spacer and wear pads with the
holes in the bottom of the boom.
c. Apply Loctite
®
242 threadlocker to the threads of
the 3/8-16 x 1-1/2" capscrews (Fig. 3-66, 4),
saved. Insert the capscrews with lockwashers
(5), saved, through the bottom of the boom and
into the wear pads. Be careful not to push the
wear pad inserts out of the wear pads.
d. Torque all wear pad mounting capscrews to
31 ±3 lb-ft (42 ±4 Nm).
e. Fill wear pad cavities with a good grade of
lithium-based EP grease.
f. Repeat Steps a-e to install the lower wear pad on
the other side of the outer boom.
Figure 3-66 Outer Boom Wear Pads
MA9510
1
2
3
4
MH1470
1
2
5
3
4
1
2
5
3
4