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#505128, JAT-128, 1-inch Impact Wrench – parts list 

#  Part No. 

Description 

Qty 

101 JAT127-101 

Hammer Case * 

102  JAT128-102 

Anvil Bushing * 

103  JAT211-104 

Socket Retainer * 

104  JAT211-105 

O-Ring 17x2.6 mm * 

105  JAT128-105 

Anvil 1 in. * 

106  JAT127-106 

Hammer Pin * 

107 JAT127-107 

Hammer * 

108 JAT127-108 

Hammer Cage * 

109  JAT128-109 

C-Ring #30 * 

201 JAT127-201 

Screw M4x60 

202  JAT127-202 

Front End Plate Bushing * 

203  JAT127-203 

O-Ring 9x1 mm * 

204  JAT127-204 

Regulator Stem * 

205  JAT127-205 

Spring 11.2x10L * 

206  73402 

Spring Pin 2.5x22L * 

207  JAT127-207 

Reverse Stem * 

208  JAT127-208 

O-Ring 70x2 mm  * 

209  BB-6003ZZ 

Ball Bearing 6003ZZ * 

210  JAT127-210 

Front End Plate * 

211 JAT127-211 

Cylinder 

212 JAT127-212 

Rotor Vane 

213 JAT127-213 

Rotor 

214  JAT127-214 

Rear End Plate * 

215  BB-6001ZZ 

Ball Bearing 6001ZZ * 

216  JAT126-216 

O-Ring 33x2 mm * 

217 JAT127-217 

Screw M4x50 

301 JAT127-301 

Housing 

302  JAT127-302 

Valve Seat * 

303  JAT127-303 

Valve Stem * 

304  JAT127-304 

Conical Spring * 

305 JAT127-305 

Muffler 

306 JAT127-306 

Exhaust Deflector 

 

#

 

Part No.

 

Description

 

Qty

 

307 JAT102-09 

Screw M3x8 

308  JAT102-10 

O-Ring 15x3 mm * 

309  JAT102-11 

Air Inlet NPT18 * 

310

 

F012088

 

Spring Pin 3x30 mm *

 

1

 

401  JAT127-401 

Trigger Assembly * 

402  JAT125-402 

Regulator Stem * 

403  JAT125-403 

Spring 2.5x5.2L * 

404  SB-2.5MM 

Steel Ball 2.5 mm * 

405  JAT127-405 

Reverse Button * 

406  JAT127-406 

Forward Button * 

407  JAT127-407 

O-Ring 7.6x1 mm * 

408  JAT127-408 

Nyloc SHC Screw M4x20 

409 JAT127-409 

Screw M6x88 

410 JAT127-410 

Gasket 

411 JAT127-411 

Gasket 

 

 

 

 

 

 

 

JAT128-HCK 

Hammer Case Kit - #101,102 

 JAT128-AA 

Anvil Assembly - #103,104,105, 
109 

 

JAT127-HK 

Hammer Kit - #106(2),107(2),108 

 JAT127-FEPK 

Front End Plate Kit - #202,203, 
204,205,206,208,209,210 

 JAT127-REPK 

Rear End Plate Kit - 
#214,215,216 

 JAT127-AIK 

Air Inlet Kit - 
#302,303,304,308(2),309,310 

 JAT127-TK 

Trigger Kit - #207,401,402,403, 
404,405,406,407(2) 

 JAT128-TUK 

Tune Up Kit  -#104,203,208, 
212(6),216,308(2),407(2) 

* These parts are only provided in the larger kit or assembly. 

Summary of Contents for JAT-128

Page 1: ...Pneumatic Impact Wrench 505128 JAT 128 Operation Parts Manual M 505128 Edition 1 02 2020 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2020 JET...

Page 2: ...ring the tooling in the retainer and placing the tip against the work surface 11 Do not operate air tool without its guards in place Do not modify the tool 12 Do not operate this tool while tired or u...

Page 3: ...Sockets in poor condition may reduce impact power and could break creating a safety hazard 36 Use only sockets designated for use with impact wrenches Never use hand tool sockets as they can shatter...

Page 4: ...y 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 shou...

Page 5: ...ibration value 8 81 m s2 Sound power 1 114 4 dB A Sound pressure 1 103 4 dB A Grip Pistol style Overall Length 9 7 in 246 38 mm Housing material Composite Net weight 7 45 lbs 3 38 kg Shipping weight 8...

Page 6: ...everse 5 Set regulator switch to desired speed setting Make sure nut or bolt can withstand rated torque of impact wrench To loosen nut or bolt 1 Select reverse rotation 2 Place socket over nut hold gr...

Page 7: ...us situation 4 Drain water from air compressor tank daily as well as any condensation from air lines Water in the air line may enter the tool and cause damage 5 Change filters on the air system on a r...

Page 8: ...est lubrication Lubrication Use a light oil containing rust inhibitors such as SAE 10 Many JET air tools have integral oil reservoirs which should be kept filled when in line oilers are not used If gr...

Page 9: ...xternal fasteners Loss 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 too...

Page 10: ...Wrench Problem Possible cause Remedy Severe air leakage Note Minimal escape of air is often normal for air tools Air valve obstructed or damaged Clean or replace Housing loose or damaged Tighten or r...

Page 11: ...ur 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 qu...

Page 12: ...12 JAT 128 Impact Wrench 505128 JAT 128 1 inch Impact Wrench exploded view...

Page 13: ...using 1 302 JAT127 302 Valve Seat 1 303 JAT127 303 Valve Stem 1 304 JAT127 304 Conical Spring 1 305 JAT127 305 Muffler 1 306 JAT127 306 Exhaust Deflector 1 Part No Description Qty 307 JAT102 09 Screw...

Page 14: ...ed 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 Informat...

Page 15: ...JET 15...

Page 16: ...16 JAT 128 Impact Wrench 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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