Harbor Freight Tools Automobile Parts 68048 User Manual

2-1/2, 3 and 4 Ton  
Service Jacks  
Specifications  
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 Profile 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.  
©
®
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.  
 
5. Tighten the Fill Screw (Fig. 2).  
Jack Components  
Adding Oil  
1. Remove the Fill Screw (Fig. 2).  
Handle  
2. Add qualified hydraulic oil of high grade into the Fill  
Screw (Fig. 2) slowly until the oil reaches the top of the  
oil fill hole.  
Saddle  
Oil Fill Screw  
(Not Shown)  
Note: Do not touch the assembled Handle when adding the  
hydraulic oil.  
Lifting Arm  
Handle Socket  
3. Replace the Fill Screw (Fig. 2)  
Lifting  
1. 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.  
Rear Caster  
Fig. 1  
U-Joint (Not Shown)  
U-Joint  
2. Turn the Handle counterclockwise to lower the Jack.  
Once the Jack is fully lowered, turn the Handle firmly  
clockwise to close it.  
Safety Valve Cover  
DO NOT OPEN  
OR ADJUST  
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.)  
Fill Screw  
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.  
Hydraulic Unit  
Fig. 2  
5. To lift the vehicle, pump the Handle of the Jack. Use  
smooth, full strokes for best results.  
Setup and Operation  
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.  
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.  
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 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.  
Bleeding  
1.  
Loosen 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.  
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.  
C. With the Jack upright, completely fill the Housing  
with a high quality hydraulic oil (not included) until  
the oil 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.  
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 firmly clockwise to close it.  
E. Recheck oil level and re-fill 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.  
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.  
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  
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.  
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.  
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.  
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.  
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:  
This warranty gives you specific legal rights and you may  
also have other rights which vary from state to state.  
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.  
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 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.)  
Handle  
Jack will  
not lift at  
its weight  
capacity  
Pump  
stroke  
feels  
Saddle  
lowers  
under load  
Saddle will moves up Oil leaking  
not lift all  
the way  
when jack from filler  
is under  
load  
plug  
spongy  
Check that Release Valve is fully closed.  
Bleed air from the system.  
X
X
X
X
Valves may be blocked and may not close  
fully. To ush the valves:  
1. Lower the Saddle and securely close  
the Release Valve.  
X
2. Manually lift the saddle several inches.  
3. Open the release valve and force the  
saddle down as quickly as possible.  
Jack may be low on oil. Check the oil  
level and refill if needed.  
X
X
X
Jack may require bleeding - see  
instructions on page 2.  
Unit may have too much hydraulic oil  
inside, check fluid level and adjust if  
needed.  
X
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 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.  
68048 3 Ton Floor Jack  
Main Parts List and Assembly Diagram  
Part  
Description  
Retaining Ring (M20)  
Washer  
Front Wheel  
Frame  
Retaining Ring (M16)  
Bolt  
Retaining Ring (M22)  
Hydraulic Adaptor  
Lift Arm Assembly  
Qty  
2
2
2
1
2
2
2
1
Part  
Description  
Qty  
1
1
1
1
2
1
1
1
1
2
3
4
5
6
7
8
9
20 Retaining Ring (M12)  
21 Handle Socket Roller  
22 Shaft  
23 Handle Socket  
24 Rubber Bumper  
25 Screw  
26 Lower Handle  
27 Upper Handle  
28 Nut (M16)  
1
4
10 Saddle  
1
1
2
1
1
2
1
2
29 Washer (M16)  
30 Tie Rod  
4
2
4
4
4
4
2
1
11 Saddle Screw  
12 Retaining Ring (M25)  
13 Lift Arm Shaft  
14 Pin (M4x45)  
15 Spring  
31 Washer (M8)  
32 Screw (M8X20)  
33 Screw (M10X25)  
34 Washer (M10)  
35 Rear Caster Assembly  
36 Cover Plate  
16 Hydraulic Unit  
17 Bolt  
18 Washer (M18)  
19 Set Screw  
2
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  
Retaining Ring (M20)  
Washer (M20)  
Front Wheel  
Frame  
Nut (M16)  
Washer (M16)  
Screw (M5X12)  
Rear Caster Assembly  
Screw (M10X20)  
Qty  
2
2
2
1
4
4
4
2
Part  
Description  
Qty  
1
1
1
1
1
1
2
2
1
2
3
4
5
6
7
8
9
17 Set Screw  
18 Upper Handle  
19 Lower Handle  
20 Screw (M6X35)  
21 U-Joint  
22 Hydraulic Unit  
23 Spring  
24 Retaining Ring (M22)  
25 Hydraulic Unit Adaptor  
26 Pin (A4x55)  
4
4
1
1
10 Washer (M10)  
11 Bolt  
2
2
1
1
1
1
27 Retaining Ring (M25)  
28 Lift Arm Shaft  
29 Cover Plate  
30 Saddle  
31 Saddle Screw  
32 Handle Bumper  
2
1
1
1
1
1
12 Washer (M18)  
13 Retaining Ring (M12)  
14 Handle Socket Roller  
15 Handle Socket  
16 Shaft  
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  
Retaining Ring (M20)  
Front Wheel Washer  
Front Wheel  
Frame  
Rear Caster  
Screw (M12X25)  
Washer (M12)  
Washer (M16)  
Qty  
2
2
2
1
2
4
4
4
2
4
4
4
2
2
2
4
Part  
Description  
Qty  
1
1
1
1
1
2
1
2
1
1
1
2
2
2
1
1
1
2
3
4
5
6
7
8
9
20 Lower Handle  
21 Set Screw  
22 Handle Socket  
23 Hydraulic Unit  
24 U-Joint  
25 Spring  
26 Cover Plate  
27 Retaining Ring (M25)  
28 Pin (M4X45)  
29 Hydraulic Unit Adaptor  
30 Lift Arm Shaft  
31 Bolt  
32 Retaining Ring (M18)  
33 Radius Link  
34 Zerk  
35 Lift Arm  
36 Saddle  
37 Saddle Screw  
38 Handle Bumper  
Retaining Ring (M30)  
10 Screw (M5X12)  
11 Screw (M8X20)  
12 Washer (M8)  
13 Tie Rod  
14 Bolt  
15 Washer (M18)  
16 Nut (M16)  
17 Rubber Bumper  
18 Upper Handle  
19 Screw  
2
1
1
1
1
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 • (800) 444-3353  
 

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