HARBOR FREIGHT 70486 3 Ton Heavy Duty Floor Jack Owner’s Manual

: June 12, 2024
: HARBOR FREIGHT

70486 3 Ton Heavy Duty Floor Jack

Owner’s Manual & Safety Instructions

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.

PITTSBURRGH

3 TON HEAVY DUTY FLOOR JACK

floor jack

Item

|

70486

---|---

Weight Capacity

|

3 Tons (6,000 lb.)

Maximum Height

|

18-1/4″

Minimum Height

|

5-1/8″

Visit our website at: http://www.harborfreight.com

Email our technical support at: productsupport@harborfreight.com

When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken, and undamaged. If any parts are missing or broken, please call 1-888-866-5797 as soon as possible.

Copyright© 2022 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.
Read this material before using this product. Failure to do so can result in serious injury.
Failure to do so can result in serious injury. SAVE THIS MANUAL.
SAVE THIS MANUAL.

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WARNING SYMBOLS AND DEFINITIONS

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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.

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Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

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Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

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Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

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Addresses practices not related to personal injury.

Page 2 For technical questions, please call 1-888-866-5797. 70486

IMPORTANT SAFETY INFORMATION

1. Study, understand, and follow all instructions before operating this device.

2. Do not exceed rated capacity.

3. Use only on hard, level surface capable of supporting the load.

4. Support the vehicle with appropriate means immediately after lifting.

5. Failure to heed these markings may result in personal injury and/or property damage.

6. Lift only areas of the vehicle as specified by the vehicle manufacturer.

7. No alterations shall be made to this product.

8. Only attachments and/or adapters supplied by the manufacturer shall be used.

9. Do not move or dolly the vehicle while on the jack.

10. Never work on, under or around a load supported only by this device.

11. Do not adjust safety valve.

12. Wear ANSI-approved safety goggles and heavy-duty work gloves during use.

13. Keep clear of load while lifting and lowering.

14. Lower load slowly.

15. Apply parking brake and chock tires before lifting vehicle.

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.

IMPORTANT! Before first use:

Check hydraulic fluid level and fill to 1/4″ below the fill port as needed – see instructions on page 5.

Thoroughly test the Jack for proper operation. If it does not work properly, bleed air from its hydraulic system – see instructions on page 5.

SAVE THESE INSTRUCTIONS.

70486 For technical questions, please call 1-888-866-5797. Page 3

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 List and Diagram on page 10.

Tool Set Up

Attaching the Handle

CAUTION! The Handle Socket will be held down by a plastic block under tension. Wear ANSI-approved safety goggles before freeing Handle Socket. Hold Handle Socket down while removing block. After removal, carefully swing Handle Socket up until tension is released.

Attach the Upper Handle to the Lower Handle.
Loosen the Set Screw and insert the
assembled Handle into the Handle Socket.
Tighten the Set Screw.

Functions

Page 4 For technical questions, please call 1-888-866-5797. 70486

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.

Bleeding

BEFORE EACH USE OR IF JACK PERFORMANCE DECREASES,
check for excessive air and proper hydraulic fluid level in Jack. If Jack appears not to be working
properly, it may be necessary to purge its hydraulic system of excessive air as follows:

Turn handle counterclockwise to open Release Valve.
Remove four screws holding on pump cover.
Remove Oil Fill Plug and top off hydraulic oil.
Apply pressure to saddle and quickly pump handle several times.
Check Oil Fill Hole again and top off with hydraulic oil if necessary.
Replace the Oil Fill Plug and turn handle clockwise to close Release Valve.
Test several times for proper operation before attempting to lift a load.

Adding Hydraulic Fluid

Remove Cover Plate and Fill Plug.
Add high grade hydraulic fluid (sold separately) slowly until the fluid reaches 1/4″ below the top of the Fill Port.
Note: Do not touch the Handle when adding hydraulic fluid.
Replace Fill Plug and Cover Plate.

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.

Slowly twist the Handle counterclockwise
to lower the Jack. Once the Jack is fully
lowered, twist the Handle firmly clockwise.
Carefully position the Jack’s Saddle under the
vehicle manufacturer’s recommended lifting
point. (See vehicle manufacturer’s owner’s
manual for location of frame lifting point.)
Pump the Handle until the top of the Saddle has
nearly reached the vehicle’s lifting point. Position
the Saddle directly under the vehicle’s lifting point.
To lift the vehicle, pump the Handle.
Use smooth, full strokes.
Select matching jack stands (sold separately)
of appropriate capacity. Set the jack
stands to the same height according to
the manufacturer’s instructions, making
sure they lock securely into position.
Position the jack stands’ saddles under the vehicle
manufacturer’s recommended support points.
WARNING! TO PREVENT SERIOUS INJURY: Ensure
that the vehicle support points are fully seated in the
saddles of both jack stands. Use a matched pair of
jack stands per vehicle to support one end only.
Slowly twist the Handle counterclockwise to
lower the vehicle onto the jack stands’ saddles.
Once the vehicle is fully seated on the
jack stands, continue slowly lowering the
Jack until it is completely lowered.
Remove the Jack and store safely out of the way.

Lowering

Carefully remove all tools, parts, etc. from under the vehicle.
Position the Jack’s Saddle under the lifting point.
Turn the Release Knob firmly clockwise and raise vehicle high enough to clear the jack stands.
Carefully remove the jack stands.
Slowly turn the Release Knob counterclockwise to lower the vehicle onto the ground.
Lower the Jack completely. Store the Jack indoors out of children’s reach.

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

BEFORE EACH USE, inspect the general condition of the Jack. Check for:
• loose hardware
• misalignment or binding of moving parts
• cracked or broken parts
• any condition that may affect its safe operation.
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.
ONCE A MONTH, lubricate the Grease
Fitting with a grease gun.
AT LEAST ONCE EVERY THREE YEARS,
change the hydraulic fluid:
a. With the Jack fully lowered, remove
the Cover Plate and Fill Plug.
b. Tip the Jack over to allow the old hydraulic fluid to
drain out completely. Dispose of the old hydraulic
fluid in accordance with local regulations.
c. With the Jack upright, completely fill the
Hydraulic Unit with high grade hydraulic fluid until
the fluid is 1/4″ below the top of the Fill Port.
d. Turn the Release Knob counterclockwise
to open the Release Valve.
e. Pump the Handle or Foot Pedal up and down
quickly several times to purge air from the system.
f. Recheck fluid level and re-fill as needed.
g. Replace the Fill Plug and Cover Plate.
AFTER EACH USE, wipe with a clean cloth.
Store the Jack indoors out of children’s reach

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

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PROBABLE SOLUTION

(Make certain that the Jack is not supporting a load while attempting a solution.)

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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.

Jack may require bleeding – see instructions on page 5.

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 by turning the Handle counterclockwise. and force the saddle down as quickly as possible.

X

|

X

|

X

|

Jack may be low on hydraulic fluid. Check fluid level

and refill if needed – see instructions on page 5.

Jack may require bleeding – see instructions on page 5.

|

X

|

Unit may have too much hydraulic fluid inside. Check fluid level and adjust if needed – see instructions on page 5.

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.

Parts List and Diagram

Parts List

Part

|

Description

|

Qty

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1

|

Retaining Ring Ø20

|

2

|

Front Wheel Washer

|

2

3

|

Front Wheel

|

2

4

|

Frame

|

1

5

|

Retaining Ring Ø16

|

2

6

|

Bolt

|

2

7

|

Retaining Ring Ø22

|

2

8

|

Hydraulic Unit Adaptor

|

1

9

|

Lift Arm

|

1

10

|

Saddle

|

1

11

|

Saddle Screw

|

1

12

|

Retaining Ring Ø25

|

2

13

|

Lift Arm Shaft

|

1

14

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Pin 4 x 45

|

1

15

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Spring

|

2

16

|

Hydraulic Unit

|

1

17

|

Bolt

|

2

18

|

Washer 18

|

2

19

|

Set Screw

|

1

Part

|

Description

|

Qty

---|---|---

20

|

Retaining Ring Ø12

|

1

21

|

Roller

|

1

22

|

Roller Pin

|

1

23

|

Handle Socket

|

1

24

|

Handle Bumper

|

1

25

|

Handle Lock Clip

|

1

26

|

Lower Handle

|

1

27

|

Upper Handle

|

1

28

|

Nut M16

|

2

29

|

Washer 16

|

4

30

|

Tie Rod

|

2

31

|

Washer 8

|

4

32

|

Screw M8 x 20

|

4

33

|

Screw M10 x 20

|

4

34

|

Washer 10

|

4

35

|

Rear Caster

|

2

36

|

Cover Plate

|

1

37

|

Screw M5 x 12

|

4

38

|

Nut M16

|

2

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. Specify UPC 193175498380 when ordering parts.

Page 10 For technical questions, please call 1-888-866-5797. 70486

Assembly Diagram

For technical questions, please call 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.

26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797