Counterweight Removal And Reassembly - JLG sky trak mmv Service Manual

General Information, Specifications and Maintenance
2. Reinstall the properly charged batteries. Secure the
hold-down brackets and attach battery cables.
3. Change the engine oil and filter to remove
condensation or other residuals.
4. If the vehicle has been stored for two years or more,
drain the coolant from the engine block and radiator
and refill with a 50/50 mixture of fresh anti-freeze
and water. For detailed information, see Section
2.13.4, b. Drain and Flush the Radiator .
5. Wipe off any multi-purpose grease that was applied
to the vehicles hydraulic cylinder rods prior to
storing.
6. Refer to Section 2.13.1, a. 10 Hour Intervals and
perform all the maintenance checks listed under the
10 Hour Intervals.
7. Review and familiarize yourself and any other
operator with all the safe and proper operating
procedures contained in the Sky Trak MMV
Telescopic Material Handler Owners/Operators
Manual.
2.13.25 Counterweight Removal and
Reassembly
a. Removal
Certain transport applications will require counterweight
removal. When removing the counterweight, another
piece of equipment (such as another MMV) capable of
lifting 5,000 lbs (2268 kg) will be required.
1. Park the vehicle on level ground, frame sway the
vehicle to 0° and ground the carriage.
2. Place the travel select lever in [N] NEUTRAL, place
the neutral lock lever in the [N] NEUTRAL LOCK
position, engage the parking brake switch and turn
the engine OFF.
3. Using another piece of equipment, lift a pallet (1) up
underneath the counterweight. Lift the pallet up to
the counterweight, but DO NOT put pressure on the
counterweight.
4. Remove the four capscrews (2) and flat washers (3)
securing the counterweight (4) to the vehicle frame.
Remove and clean any Loctite® threadlocker
residue from the threads of each capscrew and
bushing.
Note: If a white, powdery residue is present on the
threads, it can be removed. Use "Methylene Chloride" to
soften the residue and clean the residue from the
threads with a soft brass wire brush.
2.70
4
6
1
Note: Record the number of flat washers on each cap-
screw as they are removed. The correct number of flat
washers must be reassembled in the same locations to
ensure proper capscrew protrusion during reassembly of
the counterweight.
5. The four threaded bushings (5) will remain in place
in the frame until the counterweight has been
removed.
6. Lower the counterweight down with the pallet.
7. Remove the four threaded bushings (5) from the
frame.
Note: When securing the counterweight to the pallet, be
sure to secure the counterweight insert (6). The counter-
weight insert is located in a "pocket" inside the counter-
weight. The insert weighs 500 lbs (227 kg).
5
3
2
OM1160
Model MMV Rev. 12/04