JLG G6-42A Service Manual - Manual (Page 51)

3-13 G6-42A, G9-43A, G10-43A
Boom
24. Install previously removed wear pad and
spacer (15) on the bottom rear 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.
25. Install the previously removed wear pad and
spacer (16) on the left or right side 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.
26. Install the previously removed counterbalance valve
(17). Torque to 44 lb-ft (59,7 Nm).
27. Torque all wear pad mounting bolts as required.
3.5.6 Second and 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. Lubricate the bottom of the second boom section
where the wear pads of the first boom section
contact the second boom section.
2. Place the sling, or two slings for better stability,
around the third boom section and slowly insert the
second and third boom section into the first boom
section being careful not to damage hoses, chains
and/or surrounding components.
3. Lower the second and third boom section onto a
suitable support, relocate one sling and insert the
second and third boom section assembly allowing
access for the installation of the bottom plate, wear
pads, spacers and shims at the front of the first
boom section.
4. Remove any rope or wire securing the retract chain
and tilt hoses and (if equipped) auxiliary hoses as
the second and third boom sections are installed into
the first boom section.
5. Install previously removed mounting plate (1) at
the bottom front of the first boom section. Torque
as required.
6. Install the previously removed wear pads, spacers
and shims at the bottom front of the first boom
section (2). 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.
7. Install previously removed mounting plate (3) at top
front of first boom section. Torque as required.
8. Install previously removed wear pads, Spacers (4)
P/N 298-1729 and shims at top front of first 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.
9. Install previously removed wear pads, spacers and
shims at both sides on front of first boom section (5).
Snug mounting bolts.
MY3880
15
16
15
16
17
MY3840
5 5
2 2
3
1
4 4
5
5
MY3980 7 6 7