20 ton shop Press 37999 Set up and Operating Instructions Distributed exclusively by Harbor Freight Tools®. 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our website at: http://www.harborfreight.com Read this material before using this product. Failure to do so can result in serious injury. Save this manual. Copyright© 2009 by Harbor Freight Tools®. All rights reserved.
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 in the back of the manual near the assembly diagram (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.
Personal safety a. b. c. d. e. Stay alert. Watch what you are doing and use common sense when operating the tool. Do not use the tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts.
3. Do not move workpiece while compressed. 4. Release load before service or maintenance. 5. Bolt to floor before use. 6. Keep area under arbor plates clear. If arbor plates rest on obstruction (i.e., bolt, debris, etc.), it creates an uneven press, causing excess stress and possible breakage. 7. Do not stand directly in front of the press when loaded. Do not leave the press unattended when loaded. 17. Use only with bottle jack provided, 8. Avoid off-center loads.
Specifications Maximum Capacity Operating Instructions 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. 20 Tons (40,000 pounds) Oil Type Hydraulic Jack Oil Note: For additional information regarding the parts listed in the following pages, refer to the Assembly Diagram near the end of this manual. Inspect tool before use, looking for damaged, loose, and missing parts.
Uprights (18) Bolt (13) Foot (16) Foot Brace (17) Figure 2 2. Spreader (15) Nut (14) First Assemble the Feet (16) and Uprights (18), and then Mount the Shop Press: a. Lay down one of the Uprights (18) with the cross straps facing up. b. Attach a Foot (16) to the end where the cross strap is flush with the end of the Upright, using two Bolts (13) and Nuts (14). c. Attach two Foot Braces (17) to the Upright and the Foot, using four Bolts (13) and Nuts (14), as per Figure 2 orientation above. d.
the Upright (18). Position Header Supports (25) at its sides, thread a Bolt (10) through the Crossbeam, Header Support, Top Crossbeam, the other Header Support and out through the other Upright. Attach Nut (26). Repeat for the other end. Bolts (13) Press Rod Guides (23) Nuts (14) Figure 3 3.
the Press Apron rests on the Support Pins. Bottle Jack (1) on the Press Rod (24). d. Slide the Press Rod up so the Bottle Jack fits into the guide ring on the Header (2). Eye Bolts (7) e. Hook the Springs (4) into the Eye Bolts (7). Nut (8) f. Adjust the Eye Bolts so the assembly is tight and secure. Press Rod (24) 9. Figure 7 7. Insert the Eye Bolts (7) into the holes in the Press Rod (24) and secure in place with the Nuts (8).
2. Remove the Oil Filler Plug and fill the Jack with hydraulic fluid to the full level. 3. Apply pressure to the Saddle, and pump the Handle (3) quickly several times. 4. Check the Oil Fill Hole and, if necessary, top off the Oil Fill Hole with hydraulic oil. 5. Replace the Oil Filler Plug and close the Release Valve. 6. Test the Jack several times for proper operation before putting into use.
4. When the task is completed, be careful when releasing Jack pressure. For safety, remove the Handle, then use the Handle to slowly turn the Valve Release Screw on the Jack, allowing the Jack Plate to rise. User-Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician. WARNING: After pressing, during the release process the Jack may rise quickly. Stay clear.
completely, and dispose of the old hydraulic oil in accordance with local regulations. d. Completely fill the unit with a high quality hydraulic oil (not included) until the oil just begins to run out of the Oil Fill Hole. e. Reinstall the Oil Filler Plug. f. Clean with a clean cloth using a detergent or mild solvent. g. Replace the Bottle Jack onto the Shop Press (See step 8 under Assembly). SKU 37999 For technical questions, please call 1-800-444-3353.
x Pump stroke feels spongy x x Troubleshooting x Unit may have too much hydraulic oil inside, check fluid level and adjust if needed. Valves may be blocked and may not close fully. To flush the valves: 1. Lower the Saddle and securely close the Release Valve. 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. Jack may require bleeding - see instructions on page 6.
parts list & ASSEMBLY DIAGRAM Part 1 2 3 4 5 6 7 8 9 10 11 12 13 Description Qty Bottle Jack Header Jack Handle Spring Bolt M12 x 65 Bolt M18 x 70 Eye Bolt Nut M8 Nut M16 Bolt M18 x 175 Bolt M16 x 155 Press Apron Bolt M12 x 25 1 1 1 1 2 2 2 2 2 2 2 2 1 20 2 Part 14 15 16 17 18 19 20 21 22 23 24 25 26 3 Description Nut M12 Spreader Foot Foot Brace Upright Support Pin Arbor Plate Bottom Crossbeam Top Crossbeam Press Rod Guide Press Rod Header Support Nut M18 4 Qty 22 2 2 4 2 2 2 1 1 2 1 4 4 5 26
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 product, or that he or she is qualified to replace any parts of the product.
