JLG G6-42A Service Manual - Manual (Page 49)

3-11 G6-42A, G9-43A, G10-43A
Boom
16. Install the previously removed wear pads, shims and
spacers (14) at the bottom rear of the third boom
section. Snug mounting bolts. Shim as needed
AFTER boom section is installed. Refer to Section
3.10.2, “Wear Pad Installation and Lubrication,” for
detailed information.
17. Install previously removed wear pad and spacer (15)
on left or right side of the third boom section.
Snug mounting bolts. Shim as needed AFTER
boom section is installed. Refer to Section 3.10.2,
“Wear Pad Installation and Lubrication,” for
detailed information.
3.5.5 Third Boom Section Installation
Note: Using a straight bar approximately 20 in
(508 mm) long will aid in the installation of the wear pads
located on the inside front of each boom section.
1. Place second boom section onto suitable supports.
2. Lubricate bottom of third boom section where wear
pads of the second boom section contact the third
boom section.
3. Place sling, or two slings for better stability, around
third boom section and insert tilt cylinder hoses and
if equipped, auxiliary hoses into second boom
section, followed slowly by third boom section being
careful not to damage any surrounding components.
4. Lower the third boom section onto a suitable
support, relocate one sling and insert the third boom
section assembly approximately 75% into the
second boom section.
5. Install the previously removed wear pad mounting
plate (1) with existing hardware at the bottom front of
the second boom section. Torque as required
6. Install previously removed wear pads, shims and
spacers (2) with existing hardware at bottom front of
second boom section. Torque as required.
7. Install wear pad mounting plate (3) with existing
hardware at inside top front of the second boom
section. Torque as required.
8. Install previously removed wear pads, spacers and
shims on each side at front of the second boom
section (4). Snug mounting bolts. Shim as needed
AFTER boom section is installed. Refer to Section
3.10.2, “Wear Pad Installation and Lubrication,” for
detailed information.
9. Install wear pads, spacer (5) using bolts and
washers at top front of the second boom section.
Snug mounting bolts. Shim as needed AFTER
boom section is installed. Refer to Section 3.10.2,
“Wear Pad Installation and Lubrication,” for
detailed information.
10. Feed the tilt cylinder hoses and if equipped, auxiliary
hoses through the access holes at the rear of the
second boom section.
11. Push the third boom section the remainder of the
way into the second boom section.
12. Feed the retract chain through the access holes at
the rear of the second boom section.
13. Connect the retract chain to the chain clevis at the
rear of the second boom section using the existing
pin and retaining clips.
14. Secure the retract chain, tilt cylinder hoses and if
equipped, auxiliary hoses to the bottom of the boom
head with rope or wire.
MY3890
14 14
15 15
MY3870
5 5
2 2
3
4
4
4
4
1