SkyTrak 8042 Service Manual - Manual (Page 175)

Boom
3.114 Model 8042, 10042, 10054 Legacy Rev. 03/04
Note: Shim ALL side wear pads as needed to maintain
a total minimum gap of .07 to .13" (1,8 to 3,3 mm) in the
horizontal direction.
34. Assemble the side wear pads to the secondary
intermediate boom:
a. Slide the inner boom over to one side as far as it
will go, to allow wear pad installation.
b. Place the wear pad inserts (1), saved, into the
cavities of the side wear pads (2), saved.
c. Fill the cavities of the wear pad with a good
grade of lithium-based EP grease. Place the
shims (3), saved, onto the wear pad and line up
the holes.
d. Apply Loctite ® 242 threadlocker to the threads of
the capscrews (4), saved. Slide the wear pad
with shims between the inner boom and the
secondary intermediate boom with the offset of
each wear pad toward the top of the boom. Line
up the holes and secure in place with the
capscrews (4), lockwashers (5), saved, and flat
washers (6), saved. Be careful not to push the
wear pad inserts out of the wear pads.
e. Torque all wear pad mounting capscrews to
31 ±3 lb-ft (42 ±4 Nm).
f. Repeat Steps a thru e to install the side wear
pads on the other side of the secondary
intermediate boom.
35. Assemble the top wear pads to the inside of the
secondary intermediate boom:
a. Place the wear pad inserts (7), saved, into the
cavities of the top wear pads (8), saved.
b. Fill the cavities of the wear pad with a good
grade of lithium-based EP grease.
c. Apply Loctite
®
242 threadlocker to the threads of
the capscrews (9), saved. Slide the wear pad and
spacer (10), saved, between the inner boom and
the secondary intermediate boom with the offset
of each wear pad toward the center. Line up the
holes and secure in place with the capscrews (9)
and lockwashers (11), saved. 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).
Note: ALWAYS replace elastic locknuts with new elastic
locknuts to help ensure proper fastening.
36. Place the inner boom extend chain sheave (12),
saved, between the mounts at the front of the
secondary intermediate boom. Insert the sheave
pin (13), saved, through the mounts and the sheave.
Use a tapered punch to line up the mounting hole in
the pin with the mounting hole in the hub. Secure in
place with the capscrew (14), saved, and a new
elastic locknut (15). Tighten securely.
37. After the sheave is assembled, apply a good grade
of multi-purpose grease to the grease fitting at the
end of the pin (16). Turn the sheave by hand to
distribute the grease evenly.
MH1820
1
2
3
4
5 6
MH1810
11
7
8
9
10
11
MH2510
12
13
14
15
16