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Page 17 of 32 

 

Operating Instructions 

 

 

Do not force the pipe threader. Tools do a better and safer job when used in the manner for which they are 
designed. Plan your work, and use the correct tool for the job. 

 

Be sure the pipe ends and threads of the die are sufficiently oiled at all times. 

 

Keep guards in place and in working order. Never operate the threader without the guards in place. 

 

Do not use the threader with a malfunctioning switch. Any power tool that cannot be controlled with the 
power switch is dangerous and must be repaired by an authorized service representative before using. 

 

Do not leave the threader running unattended. 

 

Do not use the threader where there is a risk of causing a fire or an explosion; e.g., in the presence of 
flammable liquids, gases, or dust. The threader can create sparks, which may ignite the dust or fumes. 

 

Keep children and bystanders away from the work area while operating the threader. Do not allow children 
to handle or operate the threader. 

Threading Pipe 

Note:

  Any step requiring a non-rotating condition should be done only when the machine is stopped. 

1.  Turn the fore and rear chucks clockwise. Then loosen the three claws and install the pipe from behind the 

rear chuck, passing it through the fore chuck and past it by about 4 inches (100 mm). 

2.  Holding the pipe, turn the fore and rear chucks counterclockwise to secure the pipe then moderately 

tighten the hammer disk by turning it counterclockwise (Fig. 5). 

 
            Rear Chuck                      Hammer Disk                        

                                       

Fore Chuck 
 

 

                                                                                                                        Sledge 

Gear shift Hand 
 

 

 
 
                                                                                                                                 
 

 
 
 

Sledge Handle                   Copy Block         

Fig. 5            

 

3.  Rotate the cutting knife rack (cutter; Fig. 9) and beveling rack (reamer; Fig. 10) up out of the way then 

rotate die head in until it touches the copying block.  Lock it in place with locking pin (Fig. 6).  

 
 
 
                                                                                                          Locking Pin  
 
 
 

 
 
 
         Fig. 6 

4.  After the die head is secured in position, move the gear shift to Slow for 2-1/2” – 4” pipes or Fast for smaller 

Summary of Contents for 49671

Page 1: ...er 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 ser...

Page 2: ...that you read the entire manual to become familiar with this product before you begin using it This 4 inch pipe threader is designed for certain applications only Northern Tool and Equipment cannot b...

Page 3: ...ecific Operation Warnings 8 Grounding 9 Extension Cords 10 Assembly 11 Before Each Use 13 Operating Instructions 17 Threading Pipe 17 Cutting Pipe 18 Inner Beveling 19 After Each Use 19 Maintenance 20...

Page 4: ...NPT threads Die 1 2 3 4 14 threads inch 1 2 11 threads inch 2 1 2 4 11 threads inch Rockwell Hardness HRC58 62 Die Heads 1 2 2 2 1 2 4 Electric Motor 750W induction type 220V 50 60Hz 900W induction ty...

Page 5: ...ob better and more safely 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 require...

Page 6: ...d or under the influence of drugs alcohol or medication A moment of inattention while operating the tool may result in serious personal injury Dress properly Do not wear loose clothing dangling object...

Page 7: ...power cords immediately Damaged power cords increase the risk of electric shock When operating a power tool outside use an outdoor extension cords marked W A or W These extension cords are rated for o...

Page 8: ...r including ANSI Z87 1 approved eye protection Be sure the pipe ends and threads of the die are sufficiently oiled at all times Moving Parts Hazard Keep hands clear of cutting tools Remove keys and ad...

Page 9: ...lly malfunction or break down grounding provides a low resistance path to carry electricity away from the user reducing the risk of electric shock See Figure A The grounding prong in the plug is conne...

Page 10: ...ler the gauge number of the wire the greater the capacity of the cord For example a 14 gauge cord can carry a higher current than a 16 gauge cord Minimum extension cord wire size is shown in the follo...

Page 11: ...rom 1 2 4 inches One set of support legs and carriage One bottle of cutting oil 5 liters One inner hexagon spanner and one screwdriver Assembling Stand Assembly 1 Connect the two wheels with wheel lin...

Page 12: ...e Figure 1 4 Figure 1 4 5 Install two handles see Figure 1 5 Figure 1 5 6 Please fasten all screws safely and reliably Then finish assembly see Figure 1 6 Figure 1 6 7 Suspend the threader and make it...

Page 13: ...check that the tool will operate properly and perform its intended function Replace damaged or worn parts immediately Never operate the tool with a damaged part Replacing the Screwing Die for Threadi...

Page 14: ...e small die head No 1 while the 2 1 2 4 dies are installed in the big die head No 2 2 Remove the die head from the sledge see direction arrow in Fig 2 then a Loosen the clamp lever die head No 1 or lo...

Page 15: ...ighten the clamp lever die head No 1 or tighten the lock screw die head No 2 The die head is ready for operation 4 Place the assembled die head plate back onto the sledge reverse the direction arrow i...

Page 16: ...2 Add oil when needed through the oil disk 21 3 Cutting oil will overflow over the die head after the machine starts Please see Figure 4 2 Figure 4 2 Note Use only thread cutting oil to ensure high qu...

Page 17: ...or fumes Keep children and bystanders away from the work area while operating the threader Do not allow children to handle or operate the threader Threading Pipe Note Any step requiring a non rotatin...

Page 18: ...the fore and rear chucks by turning them clockwise and remove the pipe from the rear chuck Cutting Pipe Note Any step requiring a non rotating condition should be done only when the machine is stoppe...

Page 19: ...ure the pipe then moderately tighten the hammer disk by turning it counterclockwise Fig 5 3 Rotate the die head and cutting knife rack Fig 9 up out of the way then rotate the beveling rack reamer Fig...

Page 20: ...hift Cooling oil system Clean the oil filter disk and oil suction filter disk after each use Clean the oil tank and refill if the oil is dirty or turns black Add machine oil into the two holes see fig...

Page 21: ...Page 21 of 32 Wiring Diagram...

Page 22: ...Rivet 3 6 Upper Casting body 1 25 Switch box 1 7 Set screw 3 26 Switch 1 8 Bearing 2 27 Screw M4 10 2 9 Type 2 Hex nut M8 4 28 Nut M4 1 10 Rail support 2 29 Earth wire label 1 11 Screw M8 20 4 30 Rin...

Page 23: ...ort leg assembly 1 12 Flat washer 2 3 Nut M8 4 13 Ring D16 2 4 Tool Tray 1 14 Bolt M10 60 2 5 Handle 2 15 Wheel Support leg assembly 1 6 Nut M8 2 16 Wheel Support leg assembly A 1 7 Front Support leg...

Page 24: ...centering head 1 3 Rear scroll 1 4 Rear centering assembly 1 5 Screw M5 16 3 6 Drive shaft assembly 1 7 Pin 8 30 1 8 Cap 1 9 Screw M8 55 6 10 Ring D 8 6 11 Hand wheel 1 12 Jaw insert set 3 13 Jaw hol...

Page 25: ...tube 10 5 15 600 1 19 Spring 1 5 Carriage 1 20 Nut 1 6 Oil elbow 1 21 Rear block 1 7 Outlet oil tube 10 5 15 620 1 22 Copy frame 1 8 Oil filter 1 23 Plate 1 9 Lock 1 24 Screw M5 16 2 10 Retaining ring...

Page 26: ...over 1 12 Oil pump gear shaft 1 40 Pin 5 30 1 13 A type key 8 7 26 1 41 Shifting shaft 1 14 Special gear 1 42 Pin 5 20 2 15 Specific gear 3400RPM 1 43 Adjust handle 1 16 A type ring D 20 1 44 Screw M1...

Page 27: ...Description Qty 1 Screw M6 18 4 2 Retaining ring 1 3 Throw out lever 1 4 Lock screw 1 5 Throw out link 1 6 Screw M4 6 2 7 Head w post NPT 1 8 Screw M6 12 1 9 Post 1 10 Clamp lever 1 11 Spacer 1 12 Ind...

Page 28: ...ring 1 3 Screw M6 20 1 4 Spring 1 5 Screw M4 8 2 6 Clamp lever 1 7 Spacer 1 8 Lock screw 1 9 Rear plate 1 10 Cam plate 1 11 Spacer D 10 1 12 Flat nut 1 13 Roller 1 14 Pin 6 25 1 15 Head plate 1 16 Loc...

Page 29: ...Reamer frame 1 8 Reamer shaft 1 Cutter Part No Description Qty Part No Description Qty 1 Cutter handle 1 9 Hex Nut M8 1 2 Elastic pin 6 35 2 10 Cutter head 1 3 Wheel housing 1 11 Roller housing 1 4 W...

Page 30: ...ting to cut Cut with force The cutting knife does not work when threading The knife does not open widely when starting to thread Use the knife properly A few teeth of the cutter head are broken Replac...

Page 31: ...the sole exception of alterations made pursuant to product instructions and in a workmanlike manner Obligations of Purchaser You must retain Your product purchase receipt to verify date of purchase an...

Page 32: ...Page 32 of 32 Distributed by Northern Tool and Equipment Company Inc Burnsville Minnesota 55306 NorthernTool com Made in China...

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