SkyTrak 8042 Service Manual - Manual (Page 167)

Boom
3.106 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.
13. Assemble the side wear pads to the primary
intermediate boom:
a. Slide the secondary intermediate 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. Fill the
cavities of the wear pad with a good grade of
lithium-based EP grease.
c. 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 in between the secondary
intermediate boom and the primary intermediate
boom with the offset of each wear pad toward the
center. 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-e to install the wear pads on the
other side of the primary intermediate boom.
14. Assemble the top wear pads to the inside of the
primary intermediate boom:
a. Place the wear pad inserts (7), saved, into the
cavities of the top wear pads (8), saved.
b. Fill all wear pad cavities 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 secondary
intermediate boom and the primary 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).
15. Place the two extend chains (12) up through the
double sheave mounting bracket (13) on the front of
the primary intermediate boom.
16. Assemble the two yoke plates (14) to the extend
chains. Line up the holes in each clevis with the
holes in the yoke plates.
17. Coat the socket head capscrews (15), saved, with
anti-seize compound and insert the capscrews
through the yoke plates and the clevis. Secure in
place with new elastic locknuts (16). Tighten the
locknuts securely, but the extend chain clevis’ must
pivot freely. MH2310
1
2
3 4 5
6
MH2320
7
8
9
10
11