JLG G6-42A Service Manual - Manual (Page 64)

Boom
3-26 G6-42A, G9-43A, G10-43A
3.9.2 Quick Switch Removal
1. Remove the lock bolt (8) holding the tilt cylinder rod
end pin (9) to the quick switch assembly (10).
Remove the Tilt Cylinder pin.
2. Support the quick switch assembly (10).Remove the
capscrew (11) and locknut (12) securing the head
pin (13) to the boom head (14).
3. Inspect the above pins for nicks or surface corrosion.
Use fine emery cloth to fix minor nicks or corrosion.
If damaged or if it cannot be repaired the pin must be
replaced.
3.9.3 Quick Switch Installation
1. Assemble the quick switch assembly (10) to the
boom head (14). Line up the quick switch between
the mounts on the boom head. The quick switch
should be centered in the boom head.
2. Coat the quick switch head pin (13) with an anti-
seize compound. Insert the quick switch head pin
through the quick switch and boom head. Secure
with the previous capscrew (11) and locknut (12).
3. Align the quick switch with the tilt cylinder rod end
and insert the tilt cylinder pin (9). Align the tilt
cylinder pin and screw in the locking bolt (8). Torque
as required.
3.10 BOOM WEAR PADS
The wear pads on this machine are flat rectangular wear
pads with metal inserts.
A total of 30 wear pads are installed on the boom sections
of the G6-42A, G9-43A and G10-43A machines.
3.10.1 Wear Pad Inspection
Inspect all wear pads for wear. If angle indicators (1) on
ends of wear pads are visible, wear pads can be reused.
If the pads show uneven wear (front to back), they should
be replaced. Replace pads as a set if worn or damaged.
3.10.2 Wear Pad Installation and Lubrication
Note: Inspect all wear pads. Replace as necessary.
The following wear pad procedure must be followed to
insure the proper wear pad installation:
1. Wear pad inserts and mounting bolts MUST be
clean from any grease, oil or other contaminates
before applying Loctite
® 242™ and installing
mounting bolts.
2. Apply Loctite ® 242™ to all wear pad mounting bolts.
3. A spacer (2) with holes must be used before any
shim (3) is used.
4. A shim (3) must be inserted between spacer (2) and
wear pad support plate, block or boom section (4).
5. The number of shims can vary at each shim point.
MY5090
13
12
10
11
8
9
14
Ma2070
1 1
MAM1390
4
3
2