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Page 6

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

Item 64782 

        

Set Up

  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.

Removing Shipping Block

CAUTION! The Handle socket is held down by a plastic block.  Wear ANSI-approved 

safety goggles before freeing Handle socket.  Remove block carefully. 

A plastic block holds the Handle Socket in position during shipment.   

This helps prevent shipping damage.  To remove it:
1.  Insert the Handle into Handle Socket.
2.  Press down on Handle.

3.  Remove the plastic block.
4.  Return Handle to original position.

Attaching the Handle

1.  Slide the Upper Handle into the Lower Handle.  

Line the Button on the Lower Handle up with the 

hole in the Upper Handle until it clicks into place.

2.  Loosen the Set Screw and insert the grooved end 

of the assembled Handle into the Handle Socket.

3.  Tighten the Set Screw.

Bleeding Trapped Air

1.  With the Jack fully lowered, remove both Screws 

on the end of the Cover Plate that is closer to the 

Saddle.  Swing the Cover Plate open.  See Figure A.

2.  Remove the Fill Plug on top of the Cylinder.  

Check that the oil level inside the Cylinder is 

at the top of the Piston.  See Figure B.

3.  Insert the Handle into the Handle Socket 

to operate the Release Valve.

4.  Turn the Handle counterclockwise to open the valve.
5.  Pump the Handle up and down quickly 

10-15 times to force air from the system.

6.  Replace the Fill Plug, close the 

Cover Plate, and reinstall the Screws.

Fill Plug

Safety Valve Covers  

Do not open or adjust.

Figure A:  Hydraulic Unit

Adding Oil

NOTICE:

 To prevent damage and premature wear, 

use only 22 viscosity, non-detergent hydraulic jack oil.
1.  With the Jack fully lowered, remove both Screws 

on the end of the Cover Plate that is closer to 

the Saddle.  Swing the Cover Plate open.

2.  Remove the Fill Plug on top of the Cylinder.
3.  Add non-detergent 22 weight hydraulic jack oil 

into the Fill Plug hole slowly until the oil level just 

reaches the top of the Piston inside the Cylinder.

4.  Replace the Fill Plug, close the 

Cover Plate, and reinstall the Screws.

Fill Plug

Cylinder 

Piston

Oil

FILL LEVEL

Figure B:  Fill Level

Summary of Contents for DS400SB

Page 1: ...eference 22i When unpacking make sure that the product is intact 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 ma...

Page 2: ...se if parts are loose or damaged or if leaking hydraulic fluid 17 Do not use for aircraft purposes 18 Do not use any objects such as blocks of wood in between Saddle Pad or Saddle and lifting point Objects placed on the Saddle will reduce the stability of the Jack and could allow the vehicle to slip off the Saddle and fall 19 The warnings precautions and instructions discussed in this manual canno...

Page 3: ... safety messages that follow this symbol to avoid possible injury or death Indicates a hazardous situation which if not avoided will result in death or serious injury Indicates a hazardous situation which if not avoided could result in death or serious injury Indicates a hazardous situation which if not avoided could result in minor or moderate injury Addresses practices not related to personal in...

Page 4: ...stions please call 1 888 866 5797 Item 64782 Specifications Weight Capacity 4 Tons Weight Capacity lb 8 000 Maximum Height in 20 25 Minimum Height in 4 25 Handle Length in 49 Hydraulic Oil non detergent 22 weight Weight lb 102 ...

Page 5: ...Page 5 For technical questions please call 1 888 866 5797 Item 64782 Overview Saddle Pad Saddle Handle Foam Bumper Handle Socket Handle Release behind Socket Contoured Lift Arm ...

Page 6: ...lowered remove both Screws on the end of the Cover Plate that is closer to the Saddle Swing the Cover Plate open See Figure A 2 Remove the Fill Plug on top of the Cylinder Check that the oil level inside the Cylinder is at the top of the Piston See Figure B 3 Insert the Handle into the Handle Socket to operate the Release Valve 4 Turn the Handle counterclockwise to open the valve 5 Pump the Handle...

Page 7: ...d to in the vehicle owner s manual Always use two jack stands position them at the same point on each side of the vehicle WARNING 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 seated in the saddle of ...

Page 8: ...in a safe dry location out of reach of children and other non authorized people NOTICE Storing the Jack in a humid area or exposing it to corrosive vapor voids the warranty 3 Weekly Jack Lubrication a Lubricate according to the below steps using only general purpose lithium grease b Inject grease into each of the grease fittings c Lubricate the linkages and pivot points lightly Note Improper or in...

Page 9: ...dle lowers under load Pump stroke feels spongy or Saddle does not lift all the way Handle moves up when Jack under load Fill Plug leaking oil or Jack will not lower without a load X X Check that Release Valve is fully closed Bleed trapped air from the hydraulics 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 Manuall...

Page 10: ... Saddle 1 39 Screw 1 40 Bolt 1 41 Rubber Pad 1 42 Washer 2 43 Lock Washer 1 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 PRODUC...

Page 11: ... 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 Specify UPC 792363647823 when ordering parts Assembly Diagram ...

Page 12: ...lusion 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 expl...

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