Jackco Models 66300B - Manual (Page 3)

Turn the handle clockwise.
Move the handle up and down. Use the full stroke of the piston for
greater speed.
Support the vehicle with appropriate jack stands.
To Lower a vehicle:
Lift the vehicle to remove the jack stands, ensuring that there are
no persons or obstructions under the vehicle. Turn the handle
counter-clockwise.
To Lift a Vehicle:
OPERATING INSTRUCTION
3
Please refer to the exploded view drawing in this manual in order to identify parts:
1. Assemble the two handle halves together by depressing the spring-loaded button on the knurled handle
section (#7) and inserting the upper handle section into the lower section (#8). The spring-loaded button
should engage with the hole in the lower handle section.
2. Grease the inside of the handle yoke (#11) and remove the handle set screw (#10).
3. Install the handle assembly in the handle yoke until the bottom of the handle engages with the universal
joint assembly (#13).
4. Reinstall the handle set screw in the handle yoke making sure the screw secures the handle to the
handle yoke. Tighten the screw.
5. Air may become trapped in the hydraulic system during shipping and handling. Trapped air will affect the
pumping performance of the jack. If this occurs, follow the air pumping procedure below:
a) Remove the four screws that secure the cover plate (A) to the jack frame (B) so the oil filler screw (#37)
can be removed from the hydraulic power unit reservoir tube (#38).
b) With the lift arm (C) in its down position, look inside the oil fill screw hole. You should be able to see
the top of the power unit's cylinder (#35). The hydraulic fluid level should be no higher than the top of
the cylinder. Correct the fluid level if it is not at the proper height.
c) Pump the jack against a load that is at least 500 lbs. (225 Kgs).
After the load is raised, slightly turn the lift handle in a counterclockwise rotation so the load is very
slowly lowered.
While the lift arm is lowering, quickly pump the lift handle 5 or 6 full incremental pump strokes. After
pumping, lower the lift arm to its full rest position.
d) Install the oil fill screw (#37). Rotate the handle in a clockwise rotation until tight and pump the lift arm
to maximum height.
If the pumping condition has improved, repeat steps "a" through "d" until all of the air has been purged from
the system.
e) Install the cover plate (A) with the four screws.
ASSEMBLY