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#505660, JAT-660, 1/4-inch Screwdriver – parts list 

Index Part 

No. 

Description 

Qty 

1 JAT620-01  Motor 

housing 

80202 

Spring pin 2.5x24L 

3 JAT620-03  Air 

inlet 

4 JAT620-04  Trigger 

5 JAT620-05  Valve 

stem 

6 80206 

Reverse 

bushing 

7 SM-70421  Center 

gear 

8 JAT620-08  Valve 

spring 

9 80209 

O-Ring 

12x1.6 

10 80210 

Reverse 

lever 

11 JAT620-11  Exhaust 

diffuser 

12 JAT620-21  Ring 

13 

BB-626ZZ 

Ball bearing 626ZZ 

14 80214 

End 

plate 

15 80215 

Rotor 

16 80216 

Rotor 

vane 

17 JSM7572-17 Pin 

2.5x55 

18 JAT610-18  Cylinder 

19 80219 

Front 

end 

plate 

20 80220 

Spring 

21 80221 

Spring 

guide 

22 80222 

Internal 

gear 

23 SM-70423  Planet 

gear 

Index Ppart No. 

Description 

Qty

24

 

30124 Pin 

4x13.8L 

25 70425 

Bushing 

26 80226 

Work 

spindle 

27 

BB-6201Z 

Ball bearing 6201Z 

28 80328 

Clamp 

nut 

29

 

80429 Clutch 

30 80230 

Retaining 

ring 

31 40309 

Screw 

TS2.9 

32 80432 

Cam 

spindle 

33 

SB-1/8 

Steel ball 1/8in. 

34

 

80435 Bushing 

35 SM-70420  Pinion 

gear 

36 80247 

O-Ring 

13.8x2 

37 80211 

Motor 

gasket 

38 SM-70427  Reduction 

spindle 

39 JAT620-33  Iron 

sheet 

40 JAT620-34  Damping 

material 

41 80436 

Clutch 

housing 

42 80242 

Ball 

retainer 

43 80243 

Spring 

44 80244 

Washer 

45 70107 

O-Ring 

4.8x1.9 

 

JAT660-RPK, Repair Kit, contains  9,16(5),36,45  

JAT660-RBK, Rebuild Kit, contains  14,17,18,19,23(6),25(6)  

 

 

 

 

Summary of Contents for JAT-660

Page 1: ...Pneumatic Screwdriver 505660 JAT 660 505661 JAT 661 Operation Parts Manual M 505660 Edition 2 06 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET ...

Page 2: ...th any additional action needed JET has 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 More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How Sta...

Page 3: ...hromium from chemically treated lumber Your risk of exposure varies depending on how often you do this type of work To reduce your exposure to these chemicals work in a well ventilated area and work with approved safety equipment such as face or dust masks that are specifically designed to filter out microscopic particles 9 Do not operate an air tool continually at full throttle without a work loa...

Page 4: ...l particles caught in the air stream Exercise proper caution 30 Use only recommended accessories improper accessories may be hazardous 31 Maintain tools with care Keep air tool clean and oiled for best and safest performance 32 Do not use combustible gases carbon dioxide oxygen or any bottled gas as an air source for the tool These can present risk of explosion and serious injury 33 Do not lubrica...

Page 5: ...rth in this document The instructions and warnings in this manual may not encompass all possible workplace environments The operator is expected to take appropriate precautions and exercise common sense As with any tool operation safety of operator and bystanders should be first priority If there are questions or comments please contact your local supplier or JET JET can also be reached at our web...

Page 6: ... Forward and reverse Power setting Variable speed trigger Variable speed trigger Grip Pistol style Pistol style Overall Length 8 1 8 in 206 38 mm 7 3 8 in 187 33 mm Housing material Composite Composite Net weight 2 54 lb 1 15 kg 2 20 lb 1 kg Shipping weight 2 9 lb 1 32 kg 2 55 lb 1 16 kg 1 The specified values are emission levels and are not necessarily to be seen as safe operating levels As workp...

Page 7: ...collar forward to remove bit Maintenance Lubrication The screwdriver should be lubricated daily or before each use with air tool oil through the air inlet During continual operation it should be re oiled every 1 to 2 hours This can be done with an in line oiler or manually If done manually proceed as follows 1 Disconnect air hose from tool 2 Place 4 or 5 drops of air tool oil into air inlet NOTE A...

Page 8: ...r pressure measured at the tool when the tool is operating Set tool to 90 psi unless indicated otherwise Pressure in excess of 100 psi will shorten the life of the tool Air System Recommendations Equip the air compressor intake with a replaceable air filter that can be easily cleaned Use safety shut off valves so air flow can be stopped quickly in case of a line break When using multiple hoses air...

Page 9: ...JET 9 Figure 2 Recommended arrangement of air piping and air line system ...

Page 10: ...of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Set regulator dial on tool to maximum setting Check for loose connections Moisture or obstruction in air hose Air supply must be clean and dry Clean out air hose s and remove any kinks or bends Improper size of air transmission lines hoses fittings...

Page 11: ...ollowing pages To order parts or reach our service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Please have the stock number and serial number of your tool available when you call so that we may serve you quickly and accurately ...

Page 12: ...12 JAT 660 661 Screwdrivers 505660 JAT 660 1 4 inch Screwdriver exploded view ...

Page 13: ...20 80220 Spring 1 21 80221 Spring guide 1 22 80222 Internal gear 2 23 SM 70423 Planet gear 6 Index Ppart No Description Qty 24 30124 Pin 4x13 8L 6 25 70425 Bushing 6 26 80226 Work spindle 1 27 BB 6201Z Ball bearing 6201Z 1 28 80328 Clamp nut 1 29 80429 Clutch 2 30 80230 Retaining ring 3 31 40309 Screw TS2 9 2 32 80432 Cam spindle 1 33 SB 1 8 Steel ball 1 8in 1 34 80435 Bushing 1 35 SM 70420 Pinion...

Page 14: ...14 JAT 660 661 Screwdrivers 505661 JAT 661 1 4 inch Screwdriver exploded view ...

Page 15: ... 80219 Front end plate 1 20 80220 Spring 1 21 80221 Spring guide 1 22 80222 Internal gear 2 Index Part No Description Qty 23 JAT620 23 Planet gear 3 24 30124 Pin 4x13 8L 3 25 80225 Bushing 3 pcs 1 26 80426 Work spindle 1 27 BB 6201Z Ball bearing 6201Z 1 28 JAT661 28 Clamp nut 1 29 80429 Clutch 2 30 80230 Retaining ring 3 31 40309 Screw TS2 9 2 32 80432 Cam spindle 1 33 SB 1 8 Steel ball 1 8in 1 34...

Page 16: ...16 JAT 660 661 Screwdrivers 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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