SkyTrak 6036 Service Manual - Manual (Page 20)

Section 3. Boom
3-2 Model 6036 S/N 9B0499 and Before
INNER
BOOM
BASE END
PIN
GRILLE TILT
CYLINDER
QUICK ATTACH
PIVOT PIN
WITH GREASE
FITTING
LOCK
PIN
ROD END PIN
QUICK ATTACH
ASSEMBLY
GOOSENECK
c. Installation
1. Refer to Fig. 3.3 and install the bottom wear
pad on the inner boom. Install a new pad if it is
excessively worn (refer to paragraph 3.1.8).
Apply Loctite
® Removable Threadlocker 242 to
the capscrews and torque them to 31 lb-ft (42
N m).
2. Connect the extend chains at the top rear of
the inner boom; temporarily secure the other
end of the chains to the top front of the inner
boom
3. Use slings and a suitable hoist to slide the
repaired or new inner boom and extend chains
into the intermediate boom.
4. Working through the rear cover opening,
temporarily install the top and side inner boom
wear pads on the inner boom, Fig. 3.3. Re-
place pads that are excessively worn. Use the
same amount of shimming as used when the
pads were removed.
IMPORTANT: The ends of wear pad attaching
capscrews must not protrude beyond the wear pad
insert; the ends must range from flush to 0.19" (5
mm) recessed in the wear pad insert (refer to Fig.
3.3).
5. Check the wear pad gap between the inner
boom side and top wear pads and the inter-
mediate boom. The gap should be 0.07 to
0.13" (1,8 to 3,3 mm) and equal for all top and
side wear pads. Install or remove shims as
required.
6. Install the wear pads by applying Loctite 242 to
the capscrews and torquing them to 31 lb-ft (42
N m).
7. Secure the retract chain to the inner boom with
washers and locknuts. Make sure the chains
are not twisted.
8. Tie the grille tilt cylinder hoses together and
push them through the inner boom to the
opening at the inner boom gooseneck.
9. Refer to Fig. 3.2 and install the quick attach
assembly on the gooseneck with the quick
attach pivot pin. Position pin with grease holes
facing UP.
10. Using grease fittings at the ends of the pin,
lubricate the quick attach pivot pin.
11. Install the grille tilt cylinder as described in
paragraph 9.2.4.f.
12. Adjust hose tension as described in paragraphs
3.1.9.
Fig. 3.2 Gooseneck
2. Prepare to replace the inner boom, Fig. 3.2, by
removing the grille tilt cylinder as described in
paragraph 9.2.4.a.
3. Remove the quick attach pivot pin, Fig. 3.2,
and quick attach assembly from the goose-
neck.
4. Remove the rear boom cover, Fig. 3.1.
5. Pull the grille tilt cylinder hoses out the rear
boom cover opening.
6. Working from the rear boom cover opening,
record the number of shims beneath each wear
pad as you remove the side and top wear pads
from the inner boom, Fig. 3.3.
7. Refer to Fig. 3.1 and remove the locknuts and
washers that attach the extend and retract
chains to the inner boom.
8. Use a sling and a suitable hoist to slide the
inner boom out the front of the intermediate
boom.
9. Refer to Fig. 3.3 and remove bottom wear pad
from the rear of the inner boom.
b. Inspection and Replacement
1. Inspect the boom and welds and contact JLGif
structural damage is detected.
2. Inspect hoses and replace if damaged.
3. Inspect and replace wear pads as described in
paragraph 3.1.8.
MA0021