Harbor Freight Tools 66242 - Manual (Page 9)

Page 9 For technical questions, please call 1-800-444-3353. SKU 66242
DO NOT USE A DAMAGED OR MALFUNCTIONING JACK!
POSSIBLE SYMPTOMS
PROBABLE SOLUTION
(Make certain that the jack is not supporting
a load while attempting a solution.)
Jack will
not lift at
its weight
capacity
Saddle
lowers
under
load
Pump
stroke
feels
spongy
Saddle
will not
lift all the
way
Handle
moves up
when jack
is under
load
Oil leaking
from filler
plug
X X Check that Release Valve is fully closed.
Bleed air from the system.
X X X
Valves may be blocked and may not
close fully. To flush the valves:
1. Lower the Saddle and securely
close the Release Valve.
2. Manually lift the saddle several inches.
3. Open the release valve and force the
saddle down as quickly as possible.
X
X X
Jack may be low on oil.
Check the oil level and refill if needed.
Jack may require bleeding -
see instructions above.
X
Unit may have too much
hydraulic oil inside, check fluid
level and adjust if needed.
Inspection, Maintenance, & Cleaning
Procedures not specifically explained in this
manual must be performed only by a
qualified technician.
To prevent serious injury from tool failure:
Do not use damaged equipment.
If abnormal noise or vibration occurs, have
the problem corrected before further use.
1. BEFORE EACH USE, inspect the general condition
of the Bottle Jack. Check for loose screws,
misalignment or binding of moving parts, cracked
or broken parts, damaged Air Hose, and any other
condition that may affect its safe operation.
2. AFTER USE, clean external surfaces of the
Bottle Jack with a clean, moist cloth and a
mild detergent. Do not use solvents.
Bleeding Instructions
Before each use or if Bottle Jack performance decreases,
check for excessive air and proper hydraulic oil
level in Bottle Jack. If Jack appears not to be
working properly, it may be necessary to purge its
hydraulic system of excessive air as follows:
1. Turn Knob (6.11) Assembly completely clockwise,
closing the Release Valve Screw (3.21).
Pump the handle up and down quickly 5-6 times.
Then turn the Knob (6.11) 1-1/2 turns
counterclockwise, releasing pressure.
2. Remove the Filler Plug (1.19), and fill the Cylinder
Base (1.14) reservoir with hydraulic oil (not included).
3. Rapidly pump Handle several times to purge air.
4. Turn Knob (6.11) clockwise until
snug to hold pressure.
5. Top off the reservoir with hydraulic oil.
Then replace the Filler Plug (1.19).
IMPORTANT: After bleeding the Bottle Jack, test the
Jack for proper operation prior to its actual use.
NOTE: To prevent damage to the Bottle Jack, check
for excessive air and/or low hydraulic oil regularly.
6. WHEN STORING, turn Lock Lever (6.5)
to its open position (counterclockwise).
Always store the Bottle Jack and its accessories
in a clean, dry, safe location out of reach of
children and other unauthorized people.
TO PREVENT SERIOUS INJURY AND DEATH:
Use caution when troubleshooting a malfunctioning jack.
Stay well clear of the supported load. Completely
resolve all problems before use. If the solutions
presented in the Troubleshooting guide do not
solve the problem, have a qualified technician
inspect and repair the jack before use.
After the jack is repaired: Test it carefully
without a load by raising and lowering it fully,
checking for proper operation, BEFORE
RETURNING THE JACK TO OPERATION.