Central Hydraulics 54877 Users Manual 34271 Floor Jack

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Model 54877

ASSEMBLY and OPERATING INSTRUCTIONS

3 TON HYDRAULIC

FLOOR JACK

3491 Mission Oaks Blvd., Camarillo, CA 93011

Visit our Web site at http://www.harborfreight.com

®

Copyright© 2005 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.

For technical questions and replacement parts, please call 1-800-444-3353.

TO PREVENT SERIOUS INJURY,

READ AND UNDERSTAND ALL WARNINGS

AND INSTRUCTIONS BEFORE USE.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 2

6000 lbs

4-1/2”H to 19-3/8” H

4-1/4” Square

360 degrees

24”L x 14-3/8”W x 4-1/2”H

2”W X 3-1/2” DIA.

1”W X 2-5/16” DIA.

81.9 Ibs.

Capacity

Height Range

Saddle Size

Saddle Swivel

Overall Dimensions

Front Wheel Diameter

Rear Wheel Diameter

Weight

SPECIFICATIONS

Material Plate Steel

UNPACKING

When unpacking, check to make sure all the parts shown on the Parts Lists on page

10 and 11 are included. If any parts are missing or broken, please call Harbor Freight

Tools at the number shown on the cover of this manual as soon as possible.

SAVE THIS MANUAL

You will need this manual for the safety warnings and precautions, assembly,

operating, inspection, maintenance and cleaning procedures, parts list and

assembly diagram. Keep your invoice with this manual. Write the invoice number

on the inside of the front cover. Keep this manual and invoice in a safe and dry

place for future reference.

GENERAL SAFETY PRECAUTIONS

WARNING!

READ AND UNDERSTAND ALL INSTRUCTIONS

Failure to follow all instructions listed in the following

pages may result in electric shock, fire, and/or serious injury.

SAVE THESE INSTRUCTIONS

SKU 54877 For technical questions, please call 1-800-444-3353. Page 3

GENERAL SAFETY RULES

1. Keep your work area clean and well lit. Cluttered work areas invite accidents.

2. Do not operate tools and equipment in explosive atmospheres, such as in

the presence of flammable liquids, gases, or dust. Power tools and equip-

ment create sparks which may ignite flammables.

3. Keep bystanders, children, and visitors away while operating tools and

equipment. Distractions can cause you to lose control. Protect others in the

work area. Provide barriers or shields as needed.

4. Stay alert. Watch what you are doing, and use common sense when

operating a power tool. Do not use tools and equipment while tired or

under the influence of drugs, alcohol, or medication. A moment of

inattention while operating power tools may result in serious personal injury.

5. Dress properly. Do not wear loose clothing or jewelry. Contain long hair.

Keep your hair, clothing, and gloves away from moving parts. Loose

clothes, jewelry, or long hair can be caught in moving parts.

6. Do not overreach. Keep proper footing and balance at all times. Proper

footing and balance enables better control of the tool in unexpected situations.

7. Use safety equipment. Always wear ANSI approved safety impact goggles,

safety shoes/boots, and heavy duty work gloves when using this product.

8. Do not force the tool. Use the correct tool for your application. The correct

tool will do the job better and safer at the rate for which it is designed.

9. Store idle tools and equipment out of reach of children and other untrained

persons. Tools and equipment are dangerous in the hands of untrained users.

10. Maintain tools with care. Do not use a damaged tool. Tag damaged tools “Do

not use” untilrepaired.

11. If damaged, have the tool serviced before using. Check for loose screws,

misalignment or binding of moving parts, loose mounting, cracked or broken

parts, low hydraulic oil level, and any other condition that may affect its safe

operation. Many accidents are caused by poorly maintained tools.

12. Tool service must be performed only by qualified repair personnel. Service

or maintenance performed by unqualified personnel could result in a risk of injury.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 4

SPECIFIC SAFETY RULES

1. WARNING! Do not exceed the maximum lift capacity (3 Tons / 6,000

pounds) for this Floor Jack. Overloading the Jack could cause serious

personal injury and/or property damage.

2. The Floor Jack is designed for intermittent use only. Do not use the Jack

to support a vehicle over extended periods of time. The duration of the lifting job

should be kept as short as possible.

3. Maintain labels and nameplates on the Floor Jack. These carry important

information. If unreadable or missing, contact Harbor Freight Tools for a replacement.

4. Prior to using the Bottle Jack, make sure to read and understand all

warnings, safety precautions, and instructions as outlined in the

manufacturer’s instruction manual for the vehicle (or object) you will lift.

5. When lifting only one wheel, make sure to support the load immediately

with one jack stand (not included) placed under the side of the vehicle being

lifted. Align the saddle of the jack stand directly under the vehicle’s seam or a

recommended lifting point.

6. When lifting the entire front end or rear end of a vehicle, make sure to

support the load immediately with two jack stands. Align the saddles of the jack

stands directly under the vehicle’s frame or recommended lifting points. Also make

sure the jack stands are adjusted at the same height.

7. Make sure the Floor Jack is used only on a dry, oil/grease free, flat, level,

ground surface capable of supporting the weight of the vehicle being

lifted and any additional tools and equipment.

8. Do not work under the vehicle without properly supporting the vehicle with

jack stands. Make sure the load and jack stands are stable before getting

under a vehicle.

13. When servicing a tool, use only identical replacement parts. Follow

instructions in the

“Inspection, Maintenance, And Cleaning”

section of this

manual. Use of unauthorized parts or failure to follow maintenance instructions

may create a risk of injury.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 5

9. Use the Floor Jack only on vehicles whose frames have lifting points

(on its seam or frame) capable of aligning with the Elevating Screw of the

Jack.

10. Avoid dangerous oncoming traffic. Always use the Floor Jack as far away

from the roadside as possible.

11. Do not use the Floor Jack with the vehicle’s engine running. Make sure

to place the vehicle’s transmission in “Park” (if automatic) or “1st Gear”

(if manual). Then set the emergency brake, and block the tires opposite the tire

being lifted.

12. Industrial applications must follow OSHA requirements.

13. Always keep hands, fingers, and feet away from all moving parts of the Floor

Jack when applying or releasing a load. Remain clear of the vehicle being

raised or lowered. People and animals should be kept at a safe distance when

using the Jack.

14. Use extreme caution when applying or releasing a load. Never allow the load

to suddenly release. Slowly and carefully apply and release the load.

15. Do not allow anyone in the vehicle while using the Bottle Jack. Keep all

bystanders a safe distance away from the vehicle.

16. Never leave the Floor Jack unattended when the Jack is under a load.

17. Never support both ends of the vehicle at the same time.

18. Before lowering the Floor Jack, make sure tool trays, jack stands, and

all other tools and equipment are removed from under the vehicle.

19. Do not stand on the Floor Jack as it may tip, causing personal injury.

20. If changing a damaged tire, make it easier to remove the lug nuts by

slightly loosening the lug nuts

before

raising the tire off the ground.

21. This Floor Jack is not to be used for aircraft purposes. Never modify the

Floor Jack in an attempt to use it for a purpose it was not designed for.

22. WARNING! 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.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 6

ASSEMBLY

You will need a 3/8" and an 11/16" wrench to complete assembly.

Step 1. Take LOWER HANDLE (#20) and remove the HEX HEAD BOLT (#19).

Step 2: Insert the fitted end of the UPPER HANDLE (#18) into LOWER HANDLE. Rotate

HANDLES until the bolt holes line up in the center of the Handle Assembly.

Step 3: Insert HEX HEAD BOLT (#19) and tighten with a 3/8" wrench as shown in

Figure 1.

Step 4: Remove HANDLE BOLT (#17) from the HANDLE SOCKET .

Step 5: Insert Handle Assembly into HANDLE SOCKET and turn Handle Assembly

clockwise until it engages the pressure release gear located underneath the HANDLE

SOCKET.

Step 6: Thread HANDLE BOLT into HANDLE SOCKET and tighten with 11/16" wrench

as shown in Figure 2.

(#18)

(#19)

(#20)

(#17)

LOWER HANDLE

HEX HEAD BOLT

UPPER HANDLE

HANDLE BOLT

HANDLE SOCKET

HANDLE ASSEMBLY

FIGURE 1

FIGURE 2

SKU 54877 For technical questions, please call 1-800-444-3353. Page 7

OPERATION

Step 1: Twist the Handle Assembly clockwise to close

the pressure release valve as shown in Figure 3.

Step 2: Maneuver the Floor Jack underneath the vehicle. Check the vehicle’s Owners

Manual for proper jacking points. Do not lift vehicle by the body.

Step 3: Begin jacking by lowering the Handle Assembly as shown in Figure 4.

Step 4: Lift Handle Assembly as high as clearance allows.

Step 5: Repeat Steps 3-4 until vehicle is at desired height. Do not overextend the jack.

HANDLE ASSEMBLY

FIGURE 3

WARNING

Chalk vehicle’s wheels to

prevent rolling while lifting.

SADDLE (#31)

HANDLE ASSEMBLY

Figure 4

SKU 54877 For technical questions, please call 1-800-444-3353. Page 8

Step 6: Place jack stands underneath vehicle at specified points. Refer to the vehicle’s

Owners Manual for proper jack stand placement locations.

Step 7: Slowly twist Handle Assembly counterclockwise. This will lower the vehicle onto

the jack stands.

WARNING:

Watch for movement of vehicle or jack stands as vehicle is lowered.

If any movement occurs, jack vehicle up and adjust jack stands properly.

Step 8: Completely lower the Floor Jack and remove from underneath the vehicle.

CAUTION:

When not in use, make sure pressure is released

by turning Handle Assembly fully counterclockwise.

This will prolong the life of the jack.

Step 9: To make sure vehicle is stable, stand away and attempt to rock the vehicle. If

movement is detected, jack up the vehicle and adjust jack stands properly. Test again.

Purging the air from the hydraulic system

and filling the floor jack with oil

NOTE: If the Floor Jack stops working it may be low on oil or there may be air

trapped in the hydraulic system.

Step 1: Turn the Handle 1-1/2 turns counterclockwise to lower the Floor Jack.

Step 2: Remove the FILL PLUG (#31A), shown on page 9 Figure # 5, It is located in the

gap between the Lift Arm Assembly (#30) and the Handle Socket. You can remove it

using a flat head screw driver.

Step 3: Rapidly pump the Handle Assembly several times to purge air from the hydraulic

system.

Step 4: Close the release valve by turning the Handle Assembly completely clockwise.

Step 5: Top off the pump with hydraulic oil if needed and replace the Oil Fill Plug.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 9

NOTE : Other than the maintenance steps mentioned in this manual, all tool service

must be performed only by qualified service technicians. Service or maintenance

performed by unqualified personnel could result in a risk of injury. Lubricate the

Handle Assembly, Handle Socket, Lift Arm, Wheels, and Lift Arm Linkage before first

use and at least twice per month (more often during heavy use) as shown in Figure 6.

HANDLE ASSEMBLY

OIL FILL PLUG (#31A)

FIGURE 5

HANDLE ASSEMBLY

LIFT ARM LINKAGE

HANDLE SOCKET

LIFT ARM

WHEELS

FIGURE 6

LUBRICATION POINTS

LIFT ARM ASSEMBLY

Maintenance

SKU 54877 For technical questions, please call 1-800-444-3353. Page 10

Parts Diagram

Parts List

Note: Some parts are listed and shown for illustration purposes only and are not available

individually as replacement parts.

SKU 54877 For technical questions, please call 1-800-444-3353. Page 11

Power Unit Assembly Parts List

Note: The only parts of the POWER UNIT that are offered as separate parts are listed in the

parts list below. The complete POWER UNIT ASSEMBLY is available as part # 21.

Note: When ordering parts on this page, use an “A” suffix to specify the specific part.

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 LI-

CENSED 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

10A O-Ring 2

11A Backup Ring 2

17A O-Ring 1

27A O-Ring 1

31A Oil Fill Plug 1

34A O-Ring 1