Boom
3.8
3507, 3508, 3509, 3512, 3513, 4007, 4008, 4009, 4012, 4013
3.5
QUICK SWITCH ASSEMBLY
This machine is equipped with a quick switch system for
easy attachment changes.
3.5.1
Connecting with a Mechanical Quick
Switch Device
1. Retract quick switch device to provide clearance.
Check to be sure lock pin (
13
) and retainer pin (
14
)
is out.
2. Align attachment pin (
15
) with recess in
attachment (
16
). Raise boom slightly to engage
attachment pin in recess.
3. Engage quick switch device.
4. Shut off engine. Exit cab and insert lick pin and
secure with retainer pin.
5. If attachment is equipped, connect auxiliary
hydraulic hoses. See Section 3.5.3, “Connecting with
a Quick Switch to a Hydraulic Operated Attachment.”
3.5.2
Connecting with a Hydraulic Quick
Switch Device
1. Retract quick switch device to provide clearance.
Check to be sure lock pin is disengaged.
2. Align attachment pin (
15
) with recess in
attachment (
16
). Raise boom slightly to engage
attachment pin in recess.
3. Engage quick switch device.
4. Press the button (
17
) and at the same time, move
the joystick to engage or to disengage the quick
switch device.
5. Raise the boom to eye level and visually check that
the quick switch pin protrudes through the hole. If the
pin does not protrude through the hole, place the
attachment on the ground and return to step 2.
6. If attachment is equipped, connect auxiliary
hydraulic hoses. See Section 3.5.3, “Connecting with
a Quick Switch to a Hydraulic Operated Attachment.”
3.5.3
Connecting with a Quick Switch to a
Hydraulic Operated Attachment
1. Lower attachment to ground. Set parking brake, shut
off engine and turn key back to the “ON” position.
2. Relieve pressure in the hydraulic system by
actuating the joystick.
3. Connect the quick-disconnect fittings.
4. Start the engine.
3.5.4
Quick Switch Removal
1. Support the quick switch assembly. Remove the lock
bolt (
18
) holding the tilt cylinder rod end to the quick
switch assembly. Remove the tilt cylinder pin.
2. Support the quick switch assembly. Remove the four
bolts and covers (
19
) from each end of the quick
switch assembly. Remove the pin from the quick
switch assembly from either side.
3. Inspect the above pin 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.
3.5.5
Quick Switch Installation
1. Assemble the quick switch to the boom head. 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 pivot pin with an anti-seize
compound. Insert the quick switch pivot pin through
the quick switch and boom head. Replace the end
covers and four bolts (
19
) to each end of the quick
switch.
3. Align the quick switch with the tilt cylinder rod end
and insert the tilt cylinder pin. Align the tilt cylinder
pin and screw in the locking bolt (
18
). Torque as
required.
MAH0980
17
16
15
19
18
14
13
