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11

10.6

  Changing abrasive discs 

1.  Disconnect machine from power source. 

2.  Remove screws and nuts from sanding disc 

table. Remove disc table. 

3.  Remove lower disc guard (see Figure 19). 

 

 

Figure 19: 

 

Figure 20: 

Lower guard removal 

Sanding disc removal 

4.  Loosen setscrew in hub of disc. Remove disc 

from motor shaft (see Figure 20). 

5.  Remove old abrasive disc by peeling it from 

sanding disc plate. 

6.  Clean disc plate thoroughly. Spray the face of 

the disc with 3M Super 77 adhesive (or 
equivalent). 

7.  Remove backing from new abrasive disc and 

press abrasive disc firmly onto disc plate (see 
Figure 21). 

 

Figure 21:   Attaching sanding disc 

8.  Align keyway in disc hub with key on motor 

shaft (see Figure 22). Install disc plate on 
shaft. Position disc so that the face of disc with 
the attached abrasive protrudes slightly more 
than the edge of upper disc guard. 

 

Figure 22:  Disc installation 

9.  Tighten setscrew in hub of disc plate. 

10. Replace lower disc guard and sanding disc 

table. 

10.7

  Miter gauge 

A miter gauge (see Figure 23) is supplied with the 
sander. The miter gauge can be used on disc table 
or belt table. The miter gauge can be set anywhere 
up to 45 degrees right or left.  

 

Figure 23:  Miter gauge (shown on disc table) 

Adjust the angle by loosening knob, rotating miter 
gauge to desired angle and retightening knob. 

10.8

  Motor Belt 

Disconnect machine from power source. 

If the motor belt becomes loose, the belt can be 
tightened by loosening the motor hold down nuts 
(see Figure 24). Slide motor to rear of sander to 
tighten belt. Hold motor in position and tighten the 
four hold down nuts. 

Summary of Contents for J-4002

Page 1: ...ns and Parts Manual Belt and Disc Sander 1x42 belt 8 disc Model J 4002 JET 427 New Sanford Road Part No M 577003 LaVergne Tennessee 37086 Revision B 04 2015 Ph 800 274 6848 ECR TW0134 www jettools com...

Page 2: ...as Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website Mo...

Page 3: ...ting surface 8 8 2 Dust chutes 8 9 0 Electrical connections 8 9 1 Grounding instructions 8 10 0 Adjustments 9 10 1 Sanding belt tracking 9 10 2 Platen 9 10 3 Belt table adjustments 9 10 4 Disc table a...

Page 4: ...nings 1 Always wear protective eye wear when operating machinery Eye wear shall be impact resistant protective safety glasses with side shields which comply with ANSI Z87 1 specifications Use of eye w...

Page 5: ...int Crystalline silica from bricks cement and other masonry products Arsenic and chromium from chemically treated lumber Your risk of exposure varies depending on how often you do this type of work To...

Page 6: ...ual This manual is provided by JET covering the safe operation and maintenance procedures for the J 4002 Belt Disc Sander This manual contains instructions on installation safety precautions general o...

Page 7: ...ce 2 The sanding disc table is secured with two cap screws and nuts A hex wrench is required to tighten the screws 3 Set table on rounded pockets in support casting see Figure 1 Install nuts in channe...

Page 8: ...e the risk of electric shock This tool is equipped with an electric cord having an equipment grounding conductor and a grounding plug The plug must be plugged into a matching outlet that is properly i...

Page 9: ...n be tilted or moved in or out to accommodate the operation being performed Loosen locking handle to change position of table Move table to desired position and tighten locking handle NOTE The locking...

Page 10: ...6 inch gap between table and disc This can be accomplished by moving sanding disc in or out on motor shaft see Figure 16 Use T handle type hex wrench Put the wrench through the hole in top of disc gua...

Page 11: ...2 Install disc plate on shaft Position disc so that the face of disc with the attached abrasive protrudes slightly more than the edge of upper disc guard Figure 22 Disc installation 9 Tighten setscrew...

Page 12: ...serting switch tab Figure 9 Switch locking tab 12 0 Typical operations The following are just some of the many operations that can be performed with your JET Sander Sharpening a wood chisel on the san...

Page 13: ...he sanding belt see Figure 28 NOTE Most polishing operations are performed with the platen removed Figure 28 Polishing using a felt belt Sanding in tight areas with the sanding belt see Figure 29 Figu...

Page 14: ...ble when you call will allow us to serve you quickly and accurately 13 1 1 J 4002 Belt Parts Exploded View 13 1 2 J 4002 Belt Parts Parts List Index No Part No Description Size Qty 1 5640031 Hex Socke...

Page 15: ...g 6202ZZ 1 33 5640371 Idler 1 34 5640491 Retaining Ring 1 35 TS 1523011 Hex Socket Set Screw M6x6 1 36 5640521 Drive Wheel 1 37 5640101 Sanding Belt 50 Grit 5640111 Sanding Belt 80 Grit 5640121 Sandin...

Page 16: ...16 13 2 1 J 4002 Disc Parts Exploded View...

Page 17: ...anding Disc 120 Grit 100 5640871 Disc Plate 1 101 TS 1523011 Socket Set Screw M6x6 1 102 5640881 Screw 1 103 5640561 Rotation Label 1 106 5640921 Pulley Cover Belt Disc 1 107 5640931 V Belt 1 5640941...

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Page 20: ...20 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jetttools com...

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