Harbor Freight Tools 68048, 68056, 68049 User Manual

2-1/2, 3 and 4 Ton
Service Jacks

Specications

68048 3 Ton Service Jack

Weight Capacity 3 Tons (6,000 lb.)

Maximum Height 18-1/4"

Minimum Height 5"

68049 2-1/2 Ton Low Prole Service Jack

Weight Capacity 2.5 Tons (5,000 lb.)

Maximum Height 20-1/16"

Minimum Height 2-7/8"

68056 4 Ton Service Jack

Weight Capacity 4 Tons (8,000 lb.)

Maximum Height 20-1/2"

Minimum Height 4"

When unpacking, make sure that the product is intact and undamaged. If any parts are missing or broken,

please call Harbor Freight Tools at 1-800-444-3353 as soon as possible.

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.

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

Copyright© 2010 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.

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 on the front
page of the user’s manual (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.

Important Safety Information

In this manual, on the labeling, and all other information
provided with this product:

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.

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

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

CAUTION, used with the safety alert symbol, indicates a
hazardous situation which, if not avoided, could result in
minor or moderate injury.

NOTICE is used to address practices not related to
personal injury.

CAUTION, without the safety alert symbol, is used to
address practices not related to personal injury.

There may be some slight differences in the appearance

of the various manually-operated oor jacks, however

the instructions in this manual apply to all of such jacks
provided by Harbor Freight Tools.

Safety Warnings

WARNING Read all safety warnings and

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

damage.

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 specied 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. The brass components of this product contain lead,
a chemical known to the State of California to cause
cancer, birth defects (or other reproductive harm).
(California Health & Safety code § 25249.5, et seq.)

IMPORTANT! Before rst use:

Check hydraulic oil level and ll to 1/4" below the ll port

as needed as stated on page 3. Thoroughly test the Jack
for proper operation. If it does not work properly, bleed air
from its hydraulic system as stated on page 2.

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 1

Jack Components

Handle

Saddle

Oil Fill Screw
(Not Shown)

Lifting Arm

Rear Caster

Fig. 1

Safety Valve Cover
DO NOT OPEN
OR ADJUST

Fill Screw

Fig. 2

U-Joint (Not Shown)

U-Joint

Hydraulic Unit

Handle Socket

Setup and Operation

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. L

oosen the Fill Screw (Fig. 2).

2. Insert the assembled Handle into the Handle Socket (Fig.

1) to operate the Release Valve.

3. Turn the Handle (Fig. 1) counterclockwise to open valve.

4. Pump the Handle (Fig. 1) up and down quickly for several
times to purge the air from the system.

5. Tighten the Fill Screw (Fig. 2).

Adding Oil

1. Remove the Fill Screw (Fig. 2).

2. Add qualied hydraulic oil of high grade into the Fill
Screw (Fig. 2) slowly until the oil reaches the top of the

oil ll hole.

Note: Do not touch the assembled Handle when adding the
hydraulic oil.

3. Replace the Fill Screw (Fig. 2)

Lifting

1. Park vehicle on a at, level, solid, surface safely
away from oncoming trafc. 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.

2. Turn the Handle counterclockwise to lower the Jack.

Once the Jack is fully lowered, turn the Handle rmly

clockwise to close it.

3. Carefully position the Saddle of the Jack (Fig. 1)
under the vehicle manufacturer’s recommended lifting
point.(See vehicle manufacturer’s owner’s manual
for location of frame lifting point when lifting only one
wheel and frame lifting points when lifting the entire
front or rear end of the vehicle.)

4. Pump the Handle until the top of the Jack’s Saddle has
nearly reached the vehicle lifting point.

Note: The Jack should be positioned at 90° to the vehicle’s
lifting point to ensure the Jack’s Saddle and vehicle lifting
point are in alignment. If not, reposition the Jack before
lifting the vehicle.

5. To lift the vehicle, pump the Handle of the Jack. Use
smooth, full strokes for best results.

6. Once the vehicle is raised, slide a jack stand of
appropriate capacity (not included) under the 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.

The rated capacity of jack stands is per pair, not the

individual capacities combined unless specically noted on

the product by the jack stand manufacturer. Do not exceed
rated jack stand capacity. Ensure that the vehicle support
points are fully captured between the outer lugs of both jack
stands. Use a matched pair of jack stands per vehicle to
support one end only. Use 1 pair per vehicle only. Failure to
do so may result in sudden loss of load, which may cause
personal injury and/or property damage.

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 2

7. Center the vehicle’s lifting point(s) on the saddle of the
jack stand(s). Set the jack stand(s) according to the
manufacturer’s instructions, making sure that they lock
securely into position.

Note: Always set both Jack Stands at the same height.

8. Slowly turn the Handle counterclockwise to lower the
vehicle onto the saddle(s) of the jack stand(s). Then,

turn the Handle rmly clockwise to close it.

Lowering

1. Carefully remove all tools, parts, etc. from under
the vehicle.

2. Position the Saddle under the lifting point. Turn the

Handle rmly 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.

Inspection, Maintenance, & Cleaning

Procedures not specically explained in this

manual must be performed only by a qualied

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
Jack. Check for broken, cracked, or bent parts, loose
or missing parts, and any condition that may affect the
proper operation of the product. 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 2.

3. Change the hydraulic oil at least once every three
years:

A. With the Jack fully lowered, remove the Oil Filler

Plug on the side of the Housing.

B. Tip the Jack to allow the old hydraulic oil to drain

out of the Housing completely, and dispose of
the old hydraulic oil in accordance with local
regulations.

C. With the Jack upright, completely ll the Housing

with a high quality hydraulic oil (not included) until

the oil is 1/4″ below the ll hole.

D. Open the valve by turning the Handle

counterclockwise and pump the Handle to bleed air
from the system.

E. Recheck oil level and re-ll as needed.

F. Reinstall the Oil Filler Plug.

7. Wipe dry with a clean cloth. Then, store the Jack in
a safe, dry location out of reach of children and other
non-authorized people.

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 veries 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 specic legal rights and you may

also have other rights which vary from state to state.

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 3

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 qualied 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

Jack will
not lift at
its weight
capacity

Saddle
lowers
under load

Pump
stroke
feels
spongy

Saddle will
not lift all
the way

X X

X X X

X

X X

Handle
moves up
when jack
is under
load

Oil leaking

from ller

plug

X

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

Check that Release Valve is fully closed.
Bleed air from the system.

Valves may be blocked and may not close

fully. To ush the valves:

1. Lower the Saddle and securely close

2. Manually lift the saddle several inches.

3. Open the release valve and force the

Jack may be low on oil. Check the oil

level and rell if needed.

Jack may require bleeding - see
instructions on page 2.

Unit may have too much hydraulic oil

inside, check uid level and adjust if

needed.

PROBABLE SOLUTION

the Release Valve.

saddle down as quickly as possible.

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 4

Parts Lists and Assembly Diagrams

Please read the following carefully

The manufacturer and/or distributor has provided the parts diagram in this
manual as a reference tool only. Neither the manufacturer nor distributor
makes any representation or warranty of any kind to the buyer that he

or she is qualied to make any repairs to the product or that he or she is
qualied to replace any parts of the product. In fact, the manufacturer

68048 3 Ton Floor Jack

Main Parts List and Assembly Diagram

Part Description Qty

1 Retaining Ring (M20) 2
2 Washer 2
3 Front Wheel 2
4 Frame 1
5 Retaining Ring (M16) 2
6 Bolt 2
7 Retaining Ring (M22) 2
8 Hydraulic Adaptor 1

9 Lift Arm Assembly 1
10 Saddle 1
11 Saddle Screw 1
12 Retaining Ring (M25) 2
13 Lift Arm Shaft 1
14 Pin (M4x45) 1
15 Spring 2
16 Hydraulic Unit 1
17 Bolt 2
18 Washer (M18) 2
19 Set Screw 1

and/or distributor expressly states that all repairs and parts replacements

should be undertaken by certied 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.

Part Description Qty

20 Retaining Ring (M12) 1
21 Handle Socket Roller 1
22 Shaft 1
23 Handle Socket 1
24 Rubber Bumper 2
25 Screw 1
26 Lower Handle 1
27 Upper Handle 1
28 Nut (M16) 4
29 Washer (M16) 4
30 Tie Rod 2
31 Washer (M8) 4
32 Screw (M8X20) 4
33 Screw (M10X25) 4
34 Washer (M10) 4
35 Rear Caster Assembly 2
36 Cover Plate 1
37 Screw 4

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 5

Parts Lists and Assembly Diagrams

68049 2-1/2 Ton service Jack

Main Parts List and Assembly Diagram

Part Description Qty

1 Retaining Ring (M20) 2
2 Washer (M20) 2
3 Front Wheel 2
4 Frame 1
5 Nut (M16) 4
6 Washer (M16) 4
7 Screw (M5X12) 4
8 Rear Caster Assembly 2

9 Screw (M10X20) 4
10 Washer (M10) 4
11 Bolt 2
12 Washer (M18) 2
13 Retaining Ring (M12) 1
14 Handle Socket Roller 1
15 Handle Socket 1
16 Shaft 1

Part Description Qty

17 Set Screw 1
18 Upper Handle 1
19 Lower Handle 1
20 Screw (M6X35) 1
21 U-Joint 1
22 Hydraulic Unit 1
23 Spring 2
24 Retaining Ring (M22) 2
25 Hydraulic Unit Adaptor 1
26 Pin (A4x55) 1
27 Retaining Ring (M25) 2
28 Lift Arm Shaft 1
29 Cover Plate 1
30 Saddle 1
31 Saddle Screw 1
32 Handle Bumper 1

32

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 6

Parts Lists and Assembly Diagrams

68056 4 Ton service Jack

Main Parts List and Assembly Diagram

Part Description Qty

1 Retaining Ring (M20) 2
2 Front Wheel Washer 2
3 Front Wheel 2
4 Frame 1
5 Rear Caster 2
6 Screw (M12X25) 4
7 Washer (M12) 4
8 Washer (M16) 4

9 Retaining Ring (M30) 2
10 Screw (M5X12) 4
11 Screw (M8X20) 4
12 Washer (M8) 4
13 Tie Rod 2
14 Bolt 2
15 Washer (M18) 2
16 Nut (M16) 4
17 Rubber Bumper 2
18 Upper Handle 1
19 Screw 1

Part Description Qty

20 Lower Handle 1
21 Set Screw 1
22 Handle Socket 1
23 Hydraulic Unit 1
24 U-Joint 1
25 Spring 2
26 Cover Plate 1
27 Retaining Ring (M25) 2
28 Pin (M4X45) 1
29 Hydraulic Unit Adaptor 1
30 Lift Arm Shaft 1
31 Bolt 2
32 Retaining Ring (M18) 2
33 Radius Link 2
34 Zerk 1
35 Lift Arm 1
36 Saddle 1
37 Saddle Screw 1
38 Handle Bumper 1

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 7

Notes

SKU 68048, 6049, 6056 For technical questions, please call 1-800-444-3353 Page: 8

3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • [phone]

www.harborfreight.com