SkyTrak 6036 Service Manual - Manual (Page 20)

Section 3 Boom
3-2 6036/6036T S/N 9B0500 thru 14833
BASE END
PIN
GRILLE TILT
CYLINDER
QUICK ATTACH
PIVOT PIN
WITH GREASE
FITTING
LOCK
PIN
ROD END PIN
QUICK ATTACH
ASSEMBLY
MA0021
INNER
BOOM
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 Nm).
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.
Replace 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 Nm).
7. Secure the retract chain to the inner boom
with washers and locknuts (S/N 2515 &
Before) or shoulder screw and locknut
(S/N 2516 & After). Make sure the chain is not
twisted. Be sure the extend chains are inplace
under the chain sheave at the front of the
intermediate boom and then reassemble the
chain sheave to the mounts. Reconnect the
extend chains to the outer boom, Fig. 3.1.
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 9.5.8.f.
Fig. 3.2 Gooseneck
2. Prepare to replace the inner boom, Fig. 3.2, by
removing the grille tilt cylinder as described in
paragraph 9.5.8.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 and auxiliary
hyraulics (if so equipped) 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 locknut and
washer or shoulder screw and locknut that
attaches the retract chain to the inner boom.
Disconnect the extend chains from the outer
boom section. Remove the chain sheave from
the front of the intermediate 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 JLG if
structural damage is detected.
2. Inspect hoses and replace if damaged.
3. Inspect and replace wear pads as described in
paragraph 3.1.8.