Professional Air-Operated Grease Gun Owner’s Manual WARNING: Read carefully and understand all ASSEMBLY AND OPERATION INSTRUCTIONS before operating. Failure to follow the safety rules and other basic safety precautions may result in serious personal injury.
Thank you very much for choosing a Roughneck® product! For future reference, please complete the owner’s record below: Serial Number/Lot Date Code: ________________________________ Purchase Date: ____________________________________________ Save the receipt, warranty, and this manual. It is important that you read the entire manual to become familiar with this product before you begin using it. This product is designed for certain applications only.
Table of Contents Intended Use .......................................................................................................................................... 4 Packaging Contents .............................................................................................................................. 4 Technical Specifications ...................................................................................................................... 4 Important Safety Information .................
Intended Use • Roughneck’s Professional Air-Operated Grease Gun is used to force lubricant out of the coupler into the grease fitting. • Heavy-duty aluminum die cast head with internal bore precision honed for rapid action. • Ergonomic pistol grip and acute angle design is provided for ease of operation, especially in narrow spaces. • Discharges grease continuously with the trigger being pressed.
industrial equipment. There are certain applications for which this equipment was designed. This product will be safer and do a better job at the capacity for which it was intended. DO NOT use this equipment for a purpose for which it was not intended. • Industrial or commercial applications must follow OSHA requirements. ⚠WARNING PROP 65 • This product can expose you to chemicals including lead and phthalates, which is known to the State of California to cause cancer. For more information, go to www.
• Secure the work with clamps or a vise instead of your hand when practical. This safety precaution allows for proper tool operation using both hands. ⚠CAUTION GREASE GUN USE AND CARE • Do not force the grease gun. Products are safer and do a better job when used in the manner for which they are designed. Plan your work, and use the correct product for the job. • Check for damaged parts before each use. Carefully check that the product will operate properly and perform its intended function.
Main Parts of Grease Gun Subassembly 1. Gun head 2. Grease gun barrel 3. Trigger 4. Inlet valve / male quick connect coupler 5. Rigid steel extension 6. Grease coupler Assembly Instructions Setting up the Grease Gun Head (Refer to the Parts Diagram.) Note: Use Teflon tape while connecting rigid steel extension (38) to the gun head (1) and grease coupler (37) to the rigid steel extension (38). 1. Connect the rigid steel extension (38) to the outlet of gun head (1).
2. Thread tighten the grease coupler (37) to the other end of the rigid steel extension (38). 3. All connections should be tight. ⚠WARNING • Grease or empty cartridge in barrel is under pressure from the internal spring, be alert when removing head of the barrel. • Do not apply excessive torque or over-tighten the grease gun head as this will apply undue stress to the die cast outlet and may cause it to fracture. Loading the Grease Gun 1. Make sure the gun is disconnected from the air supply. 2.
4. Remove any empty cartridges. Always follow the steps listed above in preparing to load your grease gun before proceeding to the one of the following loading methods. There are three ways to load the grease gun: • Cartridge Loading • Bulk Fill • Filler Pump Loading Cartridge Loading 1. Completely draw back the plunger handle and lock it in place. 2. Remove the gun head (1) from the grease gun barrel (23) by turning it counter-clockwise. 3.
5. Reassemble the gun head (1) to the grease gun barrel (23) by turning it clockwise. Bulk Fill 1. Completely draw back the plunger handle and lock it in place. 2. Remove the gun head (1) from the grease gun barrel (23) by turning it counter-clockwise. 3. Fill the gun barrel (23) with grease using a spatula or grease scooper. 4. Reassemble the gun head (1) with the grease gun barrel (23) by turning it clockwise. Filler Pump Loading 1. Completely draw back the plunger handle and lock it in place. 2.
3. Operate the filler pump to fill the grease gun barrel (23). 4. Disconnect the grease gun from the filler pump. Removing Trapped Air After filling grease gun, trapped air should be removed using these steps: 1. After filling the grease gun barrel (23) with grease by any one method described previously, while reassembling the gun, keep at least 2-3 turns open. 2. Press the lock lever and release the plunger rod. Push down on the plunger handle. 3.
1. Connect the air hose to the air inlet (8) on the grease gun. 2. The grease coupler (37) provided at the end of the extension (38) has a jaw-type construction. The coupler jaws will snap on to a grease fitting and maintain a tight fit. 3. When connecting the grease coupler (37) to the grease fitting, press the grease coupler (37) straight onto the grease fitting to form a snug fit. 4. Start operating the grease gun with the grease coupler (37) as aligned to the grease fitting as possible. 5.
Troubleshooting ⚠WARNING • Disconnect from air supply before changing accessories, cleaning, or servicing. Use the following table to troubleshoot problems before contacting service personnel or your local dealer. If the problem continues after troubleshooting, call your local dealer for assistance. Failure Gun pumps little or no grease. Possible Cause Corrective Action Barrel is not completely tightened. Tighten the barrel completely. Air pockets are trapped in grease.
Parts Diagram Parts List Reference 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Part Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Part Description Gun head Body Piston Adapter O-Ring holder O-ring O-ring Inlet valve/ male quick connect coupler Screw Screw Nylock nut Trigger Push button Spring trigger Seal O-ring O-ring holder Rubber washer Non-return valve body Outlet spring Page 14 of 17 Quantity 1 1 1 1 1 1 1 1 4 1 1 1 1 1 1 2 1 1 1 1
Reference 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Part Number 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 Part Description Steel ball Seat Grease gun barrel O-ring Spring (small) Rubber washer Bulk loader valve Slotted spring pin Bush Star washer Stud Spring Cap Spring (large) Silencer Strainer mesh Grease coupler Rigid steel extension Handle Quantity 1 1 1 2 1 1 1 1 3 1 3 1 1 1 1 2 1 1 1 Replacement Parts For replacement parts and technical questions, please call Customer
Limited Warranty Northern Tool and Equipment Company, Inc. ("We'' or "Us'') warrants to the original purchaser only ("You'' or "Your") that the Roughneck product purchased will be free from material defects in both materials and workmanship, normal wear and tear excepted, for a period of one year from date of purchase. The foregoing warranty is valid only if the installation and use of the product is strictly in accordance with product instructions.
Distributed by: Northern Tool & Equipment Company, Inc. Burnsville, Minnesota 55306 www.northerntool.
