JLG G12-55A Service Manual - Manual (Page 47)

3-13 G10-55A, G12-55A
Boom
3. Install the previously removed wear pad support
plates and spacers (7) with existing hardware at the
inside top front of the third boom section. Snug
mounting bolts. Shim as needed AFTER boom
section is installed to maintain a
0.070 - 0.130 in (1,78 - 3,30 mm) gap between the
boom sections.
4. Install the previously removed wear pads, spacers
and shims on each side at the front of the third boom
section (8). Snug mounting bolts. Shim as needed
AFTER boom section is installed to maintain a
0.070 - 0.130 in (1,78 - 3,30 mm) gap between the
boom sections.
5. Install the previously removed wear pad support (9)
at the front inside of the third boom section. Use the
previously removed hardened washers and bolts
(10). Torque as required.
6. Install the previously removed wear pads, spacers
and shims at the bottom front of the third boom
section (11). Snug mounting bolts.
Note: Longer bolts (12) may be required to fully engage
the threaded inserts in the wear pads without allowing
bolts to protrude past the chamfer on the wear pads.
Refer to page 6, Wear Pad Installation and Lubrication
for detailed information.
3.5.9 Second Boom Section Assembly
1. Place the second boom section onto suitable
supports.
2. Install the previously removed chain roller (13) at the
rear of the second boom section. Insert the mounting
pin, retainer plate and hardware. Torque as required.
3. Install the previously removed wear pads and
spacers (14) at the top rear of the second boom
section. Snug mounting bolts. Shim as needed
AFTER all boom sections are installed to maintain a
0.070 - 0.130 in (1,78 - 3,30 mm) gap between the
boom sections.
4. Install the previously removed wear pads and
spacers (15) at each side rear of the second boom
section. Snug mounting bolts. Shim as needed
AFTER all boom sections are installed to maintain a
0.070 - 0.130 in (1,78 - 3,30 mm) gap between the
boom sections.
5. Install the previously removed wear pads and
spacers (16) at the bottom rear of the second boom
section. Snug mounting bolts. Shim as needed
AFTER all boom sections are installed to maintain a
0.070 - 0.130 in (1,78 - 3,30 mm) gap between the
boom sections.
6. Shims may be required to maintain a 0.070 - 0.130
in (1,78 - 3,30 mm) gap at the top rear of the second
boom section
MY3510
7
8
8
7
8 8
MY3510
9
12
11
10
12
10
11
MY4160
13
15
14
16
15
16
14