SkyTrak 6042 Service Manual - Manual (Page 78)

Boom
3.32 Model 6042 Legacy Origin 7/02
Note: Shim ALL upper rear wear pads as needed to
maintain a total maximum gap of .06" (1,5 mm) at the
rear of the pads and maintain a total minimum gap of
.07-.13" (1,8- 3,3 mm) in the vertical direction.
5. Assemble the top wear pads to the top of the
intermediate boom. Position the wear pads so the
wear pad mounting holes are offset as noted in
disassembly:
a. Apply Loctite
®
242 threadlocker to the threads of
the 3/8-16 x 1" capscrews (Fig. 3-71, 1), saved.
b. Place the wear pad shims (Fig. 3-71, 2), saved if
present, onto the top of the boom. Align the holes
in the shims with the holes in the boom.
c. Place the wear pad inserts (Fig. 3 -71, 3), saved,
into the wear pad (4) cavities in the wear pad. Be
sure the inserts are seated completely in the
cavities. Place the wear pads on top of the shims.
d. Insert a capscrew with a 3/8" lockwasher
(Fig. 3-71, 5) and a 3/8" flat washer (6), saved,
through each of the mounting holes in the top of
the intermediate boom. 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. Fill all wear pad cavities with a good grade of
lithium-based EP grease.
Figure 3- 71 Intermediate Boom Top Wear Pads
6. Spray the wear pad pathways on the inside of the
outer boom, inside of the intermediate boom and the
underside of the intermediate boom with LPS3 or
equivalent.
7. Before installing the intermediate boom into the
outer boom, place a string (heavy enough to pull the
attachment tilt and auxiliary hydraulic hoses) down
the inside of the outer boom. Allow the string to hang
out the rear of the boom. Pull the other end out the
opening on the left side of the boom where the
hoses will exit the boom. Place one string for each
hose in the boom. Position the strings all the way to
the left side of the outer boom.
8. Using a hoist capable of lifting 5,000 lbs (2268 kg)
and slings, lift the intermediate boom. Carefully slide
the hose reel end of the boom into the front of the
outer boom. Push the boom in until the rod end of
the extend/retract cylinder lines up with the mounts
on the intermediate boom.
9. Use the hoist and slings to slightly lift the front of the
intermediate boom to allow installation of the center
wear pad:
a. Fill all wear pad cavities with a good grade of
lithium-based EP grease.
b. Slide the center wear pad mount (Fig. 3 -72, 1)
into the outer boom with the wear pad offset
toward the right side. Line up the threaded holes
in the wear pad mount with the holes in the
bottom of the outer boom.
c. Apply Loctite ® 242 threadlocker to the threads of
the 3/8-16 x 1" capscrews (Fig. 3-72, 2), saved.
Secure the wear pad mount to the outer boom
with the capscrews (2) and lockwashers (3),
saved.
d. Torque all wear pad mounting capscrews to
31 ±3 lb-ft (42 ±4 Nm).
Figure 3-72 Outer Boom Center Wear Pad Mount
with Wear Pad
MH1520
2
6
1
3
4
5
MA10,0540
1
2
3