Pittsburgh 62590 Assembly instructions

Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected]
Item 62590
Weight Capacity 3 Tons (6,000 lb.)
Maximum Height 18-3/8"
Minimum Height 4-3/4"
Meets 2005 ANSI/ASME
PALD standards.
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2015 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
REV 15b

Page 2 For technical questions, please call 1-888-866-5797. Item 62590
SAFETY OPERATION MAINTENANCESETUP
Table of Contents
Safety ......................................................... 3
Setup .......................................................... 4
Operation.................................................... 5
Maintenance............................................... 7
Parts Lists and Assembly Diagrams.......... 10
Warranty .................................................... 12
WARNING SYMBOLS AND DEFINITIONS
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that
follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.

Page 3For technical questions, please call 1-888-866-5797.Item 62590
SAFETYOPERATIONMAINTENANCE SETUP
IMPORTANT SAFETY INFORMATION
Floor Jack Safety Warnings
1. Study, understand, and follow all instructions
before operating this device.
2. Do not exceed rated capacity.
3. Use only on hard, level surfaces.
4. Lifting device only. Immediately after lifting,
support the vehicle with appropriate means.
5. Do not move or dolly the vehicle while on the jack.
6. Failure to heed these markings may result in
personal injury and/or property damage.
7. Lift only areas of the vehicle as specified
by the vehicle manufacturer.
8. No alterations shall be made to this product.
9. Never work on, under or around a load
supported only by this device.
10. Do not adjust safety valve.
11. Wear ANSI-approved safety goggles and
heavy-duty work gloves during use.
12. Keep clear of load while lifting and lowering.
13. Lower load slowly.
14. Apply parking brake and chock
tires before lifting vehicle.
15. Lift vehicle only at manufacturer
recommended locations.
16. Inspect before every use; do not use
if parts are loose or damaged.
17. Do not use for aircraft purposes.
18. The warnings, precautions, and instructions
discussed in this manual cannot cover all
possible conditions and situations that may occur.
The operator must understand that common sense
and caution are factors, which cannot be built into
this product, but must be supplied by the operator.
19. WARNING: The brass components of this product
contain lead, a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
20. WARNING: This product contains di (2-ethylhexyl)
phthalate (DEHP), a chemical known to the State
of California to cause cancer and birth defects
or other reproductive harm. (California Health
& Safety Code § 25249.5, et seq.)
IMPORTANT! Before first use:
Check hydraulic fluid level and fill to 1/4″ below
the fill port as needed as stated on page 5.
Thoroughly test the Jack for proper operation.
If it does not work properly, bleed air from its
hydraulic system as stated on page 5.
SAVE THESE INSTRUCTIONS.

Page 4 For technical questions, please call 1-888-866-5797. Item 62590
SAFETY OPERATION MAINTENANCESETUP
Setup - Before Use:
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Note: For additional information regarding the parts listed in the following pages,
refer to Parts Lists and Assembly Diagrams on page 10.
Functions
U-Joint
Hydraulic Unit
Fluid Fill Plug
Safety Valve
Cover
DO NOT OPEN
OR ADJUST
Saddle
Handle
Handle Socket
Lift Arm
Rear Caster
Cover Plate
(remove
to access
Fill Plug)
Front
Wheel
Set Screw
Figure A

Page 5For technical questions, please call 1-888-866-5797.Item 62590
SAFETYOPERATIONMAINTENANCE SETUP
Operating Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this
manual including all text under subheadings therein before set up or use of this product.
Tool Set Up
Attaching the Handle
1. Fasten the Upper Handle to the Lower Handle.
2. Loosen the Set Screw and insert the
assembled Handle into the Handle Socket.
3. Tighten the Set Screw.
Bleeding
1. Remove the Cover Plate.
2. Loosen the Fluid Fill Plug.
3. Insert the Handle into the Handle Socket
to operate the release valve.
4. Turn the Handle counterclockwise to open the valve.
5. Pump the Handle up and down quickly several
times to purge air from the system.
6. Replace the Fill Plug and Cover Plate.
Adding Hydraulic Fluid
1. Remove the Cover Plate.
2. Remove the Fluid Fill Plug.
3. Add high grade hydraulic fluid into the fill hole
slowly until the fluid reaches the top of the hole.
Note: Do not touch the Handle when
adding the hydraulic fluid.
4. Replace the Fill Plug and Cover Plate.

Page 6 For technical questions, please call 1-888-866-5797. Item 62590
SAFETY OPERATION MAINTENANCESETUP
General Operating Instructions
Lifting
Park vehicle on a flat, level, solid, surface safely away from oncoming traffic. Turn off the vehicle’s
engine. Place the vehicle’s transmission in “PARK” (if automatic) or in its lowest gear (if manual).
Set the vehicle’s emergency brake. Then, chock the wheels that are not being lifted.
1. Turn the Handle counterclockwise to open
the release valve and lower the Jack. Once
the Jack is fully lowered, turn the Handle
firmly clockwise to close the valve.
2. Carefully position the Saddle of the Jack under
the vehicle manufacturer’s recommended lifting
point. (See vehicle manufacturer’s owner’s
manual for location of frame lifting point.)
3. Pump the Handle until the top of the Jack’s Saddle
has nearly reached the vehicle lifting point. Position
the Saddle directly under the vehicle’s lifting point.
4. To lift the vehicle, pump the Handle of
the Jack. Use smooth, full strokes.
5. Once the vehicle is raised, slide a jack stand of
appropriate capacity (not included) under a proper
lifting point referred to in the vehicle owner’s
manual. Always use two jack stands. Position them
at the same point on each side of the vehicle.
WARNING! The rated capacity of jack stands is per
pair, not the individual capacities combined unless
specifically noted on the product by the jack stand
manufacturer. Do not exceed rated jack stand
capacity. Ensure that the vehicle support points
are fully seated in the saddle of both jack stands.
Use a matched pair of jack stands per vehicle to
support one end only. Failure to do so may result
in the load suddenly falling, which may cause
personal injury and/or property damage.
6. Center the vehicle’s lifting point(s) on the saddle of
the jack stand(s). Set the jack stand(s) to the same
height according to the manufacturer’s instructions,
making sure that they lock securely into position.
7. Slowly turn the Handle counterclockwise to open
the release valve and lower the vehicle onto the
saddle(s) of the jack stand(s). Then, turn the
Handle firmly clockwise to close the valve.
Lowering
1. Carefully remove all tools, parts, etc.
from under the vehicle.
2. Position the Saddle under the lifting point.
Turn the Handle firmly clockwise and raise
load high enough to clear the jack stands,
then carefully remove jack stands.
3. Slowly turn the Handle counterclockwise
(never more than 1/2 full turn) to lower
the vehicle onto the ground.
4. Lower the Jack completely. Then, store in a
safe, dry location out of reach of children.

Page 7For technical questions, please call 1-888-866-5797.Item 62590
SAFETYOPERATIONMAINTENANCE SETUP
Maintenance and Servicing
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.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the general
condition of the Jack. Check for:
• loose or missing hardware
• misalignment or binding of moving parts
• cracked or broken parts
• any condition that may affect its safe operation.
If a problem occurs, have the problem corrected
before further use.
Do not use damaged equipment.
2. BEFORE EACH USE, thoroughly test the Jack
for proper operation prior to its actual use.
If the Jack appears not to be working properly,
follow Bleeding instructions on page 5.
3. AT LEAST ONCE EVERY THREE YEARS,
change the hydraulic fluid:
a. With the Jack fully lowered, remove the
Fluid Fill Plug on the side of the Housing.
b. Tip the Jack to allow the old hydraulic fluid
to drain out of the Housing completely,
and dispose of the old hydraulic fluid in
accordance with local regulations.
c. With the Jack upright, completely fill the Housing
with a high quality hydraulic fluid (not included)
until the fluid is 1/4″ below the fill hole.
d. Open the valve by turning the Handle
counterclockwise and pump the Handle
to bleed air from the system.
e. Recheck fluid level and re-fill as needed.
f. Reinstall the Fluid Fill Plug.
4. AFTER EACH USE, wipe dry with a clean cloth.
Store the Jack in a safe, dry location out of reach
of children and other non-authorized people.

Page 8 For technical questions, please call 1-888-866-5797. Item 62590
SAFETY OPERATION MAINTENANCESETUP
Troubleshooting
TO PREVENT SERIOUS INJURY:
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.
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
Fluid
leaking
from fill
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 fluid. Check the fluid level and refill if needed.
Jack may require bleeding - see instructions on Bleeding on page 5.
XUnit may have too much hydraulic fluid inside;
check fluid level and adjust if needed.

Page 9For technical questions, please call 1-888-866-5797.Item 62590
SAFETYOPERATIONMAINTENANCE SETUP
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only,
and are not available individually as replacement parts.

Page 10 For technical questions, please call 1-888-866-5797. Item 62590
SAFETY OPERATION MAINTENANCESETUP
Part Description Qty
1 Retaining Ring 2
2 Washer 2
3 Wheel 2
4 Shaft 1
5 Side Plate 2
6 Shaft 3
7 Spring Washer 6
8 Hex Bolt 6
9 Bolt 2
10 Spring Washer 2
11 Hex Nut 2
12 Caster Assembly 2
13 Bolt 4
14 Spring Washer 4
15 Handle Base Bolt 2
16 Spring Washer 2
17 Rubber Bumper 2
18 Handle Base 1
19 Retaining Ring 1
20 Roller 1
Part Description Qty
21 Roller Pin 1
22 Ram 1
23 Retaining Spring 2
24 Cotter Pin 1
25 Retaining Ring 2
26 Shaft 1
27 Lift Arm Assembly 1
28 Saddle 1
29 Saddle Screw 1
30 Lift Arm Support Rod 2
31 Retaining Ring 2
32 Cover Plate 1
33 Hex Nut 2
34 Spring Washer 2
35 Lower Handle 1
36 Hex Bolt 1
37 Upper Handle 1
38 Handle Foam 1
39 Bolt 4
Parts Lists and Assembly Diagrams
Parts List and Assembly Diagram – Jack
22
23
24
25
26
25
1
2
3
4
3
2
1
5
6
7
8
9
10
11 12
14
13
78
15
16
7
6
17
87
17
18
19
20
21
27
28
30
31
32
6
35
37
36
29
38
33
34
39 8

Page 11For technical questions, please call 1-888-866-5797.Item 62590
SAFETYOPERATIONMAINTENANCE SETUP
Parts List and Assembly Diagram – Ram
R21
R20
R19
R18
R17
R30
R28
R27
R26
R25
R31
R24
R33
R32
R34
R20
R19
R18
R43
R22
R41
R39
R38
R37
R35
R36
R42
R21
R23
R22
R26
R25
R4
R5
R6
R7
R8
R10
R3 R2
R1
R11 R12
R14
R13
R16
R15
R9
R22
R29 R40
R22
Part Description Qty
R1 Valve Base 1
R2 Cylinder Washer 2
R3 Wedge Ring 1
R4 Nylon Washer 1
R5 Cylinder 1
R6 Steel Ring 1
R7 O-Ring 1
R8 Rod Bushing 1
R9 Guide Ring 1
R10 Piston Rod 1
R11 Top Cap 1
R12 O-Ring 1
R13 Nylon Ring 1
R14 Oil Reservior 1
R15 O-Ring 1
R16 Fluid Fill Plug 1
R17 Cone Valve 1
R18 Spring 2
R19 Bolt 2
R20 O-Ring 2
R21 Sealing Bolt 2
R22 Steel Ball 5
Part Description Qty
R23 Copper Washer 1
R24 High Pressure Pump Core Base 1
R25 O-Ring 2
R26 Split Washer 2
R27 High Pressure Pump Piston 1
R28 Spring 1
R29 Spring Sleeve 1
R30 Spring Base 1
R31 Retaining Ring 1
R32 Steel Ball 1
R33 O-Ring 1
R34 Release Valve 1
R35 Copper Washer 1
R36 Low Pressure Pump Core Base 1
R37 O-Ring 2
R38 Low Pressure Pump Piston 1
R39 Spring 1
R40 Spring Sleeve 1
R41 Spring Base 1
R42 Retaining Ring 1
R43 Valve 1

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • 1-888-866-5797
Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards,
and warrants to the original purchaser that this product is free from defects in materials and workmanship for the
period of 90 days from the date of purchase. This warranty does not apply to damage due directly or indirectly,
to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, criminal activity, improper
installation, normal wear and tear, or to lack of maintenance. We shall in no event be liable for death, injuries
to persons or property, or for incidental, contingent, special or consequential damages arising from the use of
our product. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation of exclusion may not apply to you. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation charges
prepaid. Proof of purchase date and an explanation of the complaint must accompany the merchandise.
If our inspection verifies the defect, we will either repair or replace the product at our election or we may
elect to refund the purchase price if we cannot readily and quickly provide you with a replacement. We will
return repaired products at our expense, but if we determine there is no defect, or that the defect resulted
from causes not within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.