JLG 723A Service Manual - Manual (Page 39)

3-9 L2906H, 2906H, 3507H, 619A, 723A, 29.6LP, 29.6, 35.7
Boom
Boom Section Wear Pad Pathway Lubrication:
• Clean and lightly grease all wear pad pathways with
Mystik Tetrimoly grease.
• Clean and lightly grease the hose carrier guide bar
pathways with Mystik Tetrimoly grease.
3.6 QUICK ATTACH ASSEMBLY
3.6.1 Quick Attach Removal
1. Park the machine on a firm, level surface. Place the
transmission control lever in (N) NEUTRAL, engage
the park brake switch.
2. Place a Do Not Operate Tag on both the ignition key
switch and the steering wheel, stating that the
machine should not be operated.
3. Open the engine cover. Allow the system fluids to
cool.
4. Properly disconnect the battery.
5. If equipped with a hydraulic quick attach device,
remove both hydraulic hoses (6) from the valve on
the left side of the boom head. Plug and cap the
hose ends to prevent dirt and debris from entering
the hydraulic system.
6. Remove the lock bolt holding the tilt cylinder rod end
pin (7) to the quick attach assembly (8). Remove the
tilt cylinder pin (7).
7. Support the quick attach assembly (8). Remove the
lock bolt holding the quick attach pin (9) to the quick
attach assembly. Remove the pin from the quick
attach assembly from either side.
8. 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.
3.6.2 Quick Attach Installation
1. Line up the quick attach between the mounts on the
boom head. The quick attach should be centered in
the boom head.
2. Coat the quick attach pivot pin (9) with an anti-seize
compound. Insert the quick attach pivot pin through
the quick attach (8) and boom head. Align the pivot
pin and quick attach. Install the lock bolt and torque
to 97 Nm (72 lb-ft).
3. Align the quick attach (8) with the tilt cylinder rod end
and insert the tilt cylinder pin (7). Align the tilt
cylinder pin and quick attach. Install the lock bolt and
torque to 97 Nm (72 lb-ft).
4. If equipped, uncap and reconnect the hydraulic
quick attach device hoses (6) to the valve on the left
side of the boom head.
5. Properly connect the battery.
6. Clean up all debris, hydraulic oil, etc., in, on, near
and around the machine.
7. Close and secure the engine cover.
8. Remove the Do Not Operate Tags from both the
ignition key switch and the steering wheel.
MZ3700
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