JLG 600SC_660SJC Service Manual - Manual (Page 166)

SECTION 6 - UNDERCARRIAGE
6-62 – JLG Lift – 3120898
NOTE: Replace the O-ring seals that are used in the ends of
the eight hose assemblies with new O-ring seals.
The eight hose assemblies connect to the bottom of
the swivel joint.
5. Install fittings (7) in the swivel joint. Install two hose
assemblies (6), four hose assemblies (8) and two
hose assemblies (9) in the bottom of the swivel joint.
Make sure that the hose assemblies are connected
in the correct location.
6. Install the boot and flange (11) over the swivel joint.
Position flange (11) in order to install bolts (10) that
secure the flange to the frame.
NOTE: Replace the O-ring seals that are used in the ends of
the two hose assemblies with new O-ring seals. The
two hose assemblies connect to the top of the swivel
joint.
7. Connect two hose assemblies (2) and (3). Make
sure that the hose assemblies are connected in the
correct location. Install hose clamp (4).
NOTE: Replace the O-ring seals that are used in the ends of
the four hose assemblies with new O-ring seals. The
four hose assemblies connect to the top of the swivel
joint.
8. Connect four hose assemblies (1). Make sure that
the hose assemblies are connected in the correct
locations.
9. Fill the hydraulic oil tank to the correct level with oil.
Refer to Operation and Maintenance Manual, "Lubri-
cant Viscosities and Refill Capacities" for the correct
filling procedure and the correct levels.
6.14 TOWING INFORMATION
Towing the Machine
PERSONAL INJURY OR DEATH COULD RESULT WHEN TOWING
A DISABLED MACHINE INCORRECTLY.
BLOCK THE MACHINE TO PREVENT MOVEMENT BEFORE FINAL
DRIVES ARE DISENGAGED. THE MACHINE CAN ROLL TREE IF IT
IS NOT BLOCKED. WITH FINAL DRIVES DISENGAGED, THE
MACHINE CANNOT BE STOPPED OR STEERED.
FOLLOW THE RECOMMENDATIONS BELOW, TO PROPERLY PER-
FORM THE TOWING PROCEDURE.
RELIEVE THE HYDRAULIC TANK AND LINE PRESSURE BEFORE
ANY DISASSEMBLY.
REMOVING THE PLUGS FROM THE BRAKE COVER OF THE
TRAVEL MOTOR WITHOUT FIRST RELIEVING THE INTERNAL
PRESSURE WILL CAUSE HYDRAULIC OIL TO SQUIRT OUT.
EVEN AFTER THE MACHINE HAS BEEN TURNED OFF, THE
HYDRAULIC OIL CAN STILL BE HOT ENOUGH TO BURN. ALLOW
THE HYDRAULIC OIL TO COOL BEFORE DRAINING.
NOTE: To tow the machine, both final drives must be disen-
gaged.
NOTE: Do not operate the travel motors with the final drives
disengaged. Damage could result.
These towing instructions are for moving a disabled
machine for a short distance at low speed. Move the
machine at a speed of 2 km/h (1.2 mph) or less to a con-
venient location for repair. Always haul the machine if long
distance moving is required.
Shields must be provided on both machines. This will pro-
tect the operator if the tow line or the tow bar breaks.
Do not allow an operator to be on the machine that is
being towed.
Before you tow the machine, make sure that the tow line
or the tow bar is in good condition. Make sure that the tow
line or the tow bar has enough strength for the towing pro-
cedure that is involved. The strength of the tow line or of
the tow bar should be at least 150 percent of the gross
weight of the towing machine. This requirement is for a
disabled machine that is stuck in the mud and for towing
on a grade.
Attach the cable to the towing eye on the front of the
machine if you are towing the machine forward. Attach the
cable to the drawbar pin on the rear of the machine if you
are towing the machine backward.