Harbor Freight Tools 68048, 68056, 68049 User Manual
2-1/2, 3 and 4 Ton
Service Jacks
Specications
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 Prole 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 specied 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 qualied 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 trafc. 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 specically 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
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