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OWNER'S MANUAL
SETUP
PLEASE REFER TO THE EXPLODED VIEW DRAWING IN THIS MANUAL IN ORDER TO IDENTIFY PARTS.
1. In order to install the handle assembly (#54) in the handle socket (#32), first align the main handle tube with the largest
hole in the handle socket and the lock pin rod with the smaller hole in the handle socket.
2. Make sure the lock pin rod is in the down/lock position before insertion in the handle socket. Once the main handle tube and lock
pin rod are aligned with their respective holes in the handle socket, push the handle assembly in the handle socket so the end of
the handle tube engages the release valve mechanism in the bottom of the handle socket and the lock pin rod engages one of
the three (3) locking holes in the (#1) frame.
3. Now rotate the "T" handle portion of the handle assembly so it is perfectly aligned with the jack before tightening the (#36) bolt, (#35)
washer, and (#34) nut. Tighten the bolt, washer, and nut so the handle cannot rotate. Disengage the lock pin rod by pulling up on the lever
and engaging the lever with the slot in top of the handle assembly. The handle assembly should be free to pump up and down.
4. In order to check for proper handle assembly alignment with the handle socket, see if the lock pin rod will engage with the three
locking holes in the frame. Also, turn the release valve knob at the top of the handle assembly left and then right to see if the
release valve u-joint in front and below the handle socket is rotating simultaneously with the turning of the knob.
5. Before Use: Air may become trapped in the hydraulic system.
PURGING AIR FROM THE HYDRAULIC SYSTEM:
a. Rotate the knob at the top of the handle assembly in a clockwise direction until tight.
Now turn it in a counterclockwise direction two full turns.
b. Activate the foot pump pedal (#33) about 15 times.
c. Rotate the knob at the top of the handle assembly in a clockwise direction until tight.
d. Activate the foot pump until the lift arm is raised to maximum height. You should experience a full pump stroke with each
incremental pump of the pedal.
e. Repeat steps "a" through "d" until all air is purged from the system.
OPERATING INSTRUCTIONS
This is the safety alert symbol used for the OPERATING INSTRUCTIONS section of this manual to alert you to potential personal
injury hazards. Obey all instructions to avoid possible injury or death.
IMPORTANT: Before attempting to raise any vehicle, check vehicle service manual for recommended lifting surfaces.
OPERATION:
1. To raise load: Turn the knob at the top of the handle assembly in a clockwise direction until tight. Position the jack under the
load. Proceed to pump the handle or the foot pedal in order to raise the lift arm to the load. As the saddle at the end of the lift
arm gets closer to the load, reposition the jack so the saddle will contact the load firmly and the load is centered on the saddle.
Make sure the saddle is correctly positioned. Remember that foot pedal pump operation is only used to quickly raise the saddle
to the load. The handle pump operation of the jack is used to lift the load. Raise the load to the desired work height. Place jack
stands of appropriate capacity at the vehicle manufacturer's recommended support areas that provide stable support for the
raised vehicle. DO NOT CRAWL UNDER VEHICLE WHILE LIFTING VEHICLE OR REMOVING THE JACK STANDS! Once jack
stands are positioned, turn the knob at the top of the handle assembly in a counterclockwise direction VERY SLOWLY. Lower the
load to rest on the jack stands. Inspect the relationship between the jack stands and load to make sure the setup is stable and
safe. If the setup is not stable or safe, follow the preceding steps until corrected. NOTE. Once the hand pump operation has
ceased, the handle assembly can be locked in any of the three (3) handle locking positions. Typically, the handle locking positions
are used for moving the jack around the shop, keeping the handle out of the way or preventing the handle from being pumped.
2. To lower load: Follow the procedures mentioned in "To raise load" section of the OPERATING INSTRUCTIONS in order to raise
the load off the jack stands. Once the load has cleared the jack stands, remove the stands from under the load and away from
the work area. Turn the knob at the top of the jack's handle assembly very slowly in a counterclockwise direction until the load
is completely lowered to the ground. Once the jack's lifting saddle has cleared the load, remove the jack from under the load.
CAUTION: Keep hands and feet away from the hinge mechanism of the jack. DO NOT CRAWL UNDER VEHICLE WHILE LIFTING
VEHICLE OR REMOVING THE JACK STANDS!
PREVENTATIVE MAINTENANCE
This is the safety alert symbol used for the PREVENTATIVE MAINTENANCE section of this manual to alert you to potential personal
injury hazards. Obey all instructions to avoid possible injury or death.
1. Always store the jack in a well protected area where it will not be exposed to inclement weather, corrosive vapors, abrasive dust,
or any other harmful elements. The jack must be cleaned of water, snow, sand, grit, oil, grease or other foreign matter before using.
2. The jack must be lubricated periodically in order to prevent premature wearing of parts. A general purpose grease must be
applied to all zerk grease fittings, caster wheels, front axle wheels, elevator arm, handle base pivot bolts, release mechanism
and all other bearing surfaces. Worn parts resulting from inadequate or no lubrication are not eligible for warranty consideration.
6604 Rev. A
MODEL 6604 Rev. A
FLOOR SERVICE JACK
3
CAPACITY: 5 TON
rev. 09/22/16
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