Jet JAT-900 Operations & Parts Manual Download Page 7

JET   

 

Setup and Assembly 

Any missing parts or damage should be reported 
immediately to your JET

®

 distributor. Do not use a 

damaged tool. Read this instruction manual 
thoroughly for operation, maintenance and safety 
instructions. 

Box contents: 

1 Pneumatic 

hammer 

1 Spring 

retainer 

4 Chisels 

Operation and parts manual  

1 Warranty 

card 

Operation 

 

The air hammer must be 

properly lubricated before operation. See 
“Lubrication” section. 

 

Figure 1 

1.  Insert chisel shank into cylinder of air 

hammer. Slide spring retainer over chisel 
and screw it all the way onto cylinder; use 
rear tab for leverage. Make sure front coil of 
spring surrounds chisel (inset, Figure 1). 

2. 

Pull on chisel to verify it is secure. 

3. 

Remove protective cap from air inlet (Figure 
1). If an in-line oiler is not being used, add 4 
or 5 drops of air tool oil (not included) into the 
air inlet. 

4.  Blow out air line to remove any dirt or 

moisture, then connect air supply hose to 
tool. Set air pressure to 90 psi. 

IMPORTANT:

 Connecting a quick-change 

coupling directly to the tool is not 
recommended, as vibration may cause the 
connection to fail. Instead, add a leader hose 
and install any quick-change couplings 
farther down the line. 

5. 

Adjust speed with air regulator knob.  

6. 

Hold air hammer with both hands, and press 
chisel blade against target surface. Press 
trigger to begin hammering action. 

7. 

Release trigger to stop air hammer. 

Four chisels are provided with the air hammer 
(Figure 2). 

 

Figure 2 (p/n JSG-1304) 

A. Flat chisel 
B. Nut splitter 
C. Tapered punch 
D. Panel cutter 

Maintenance 

Lubrication 

The air hammer 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 
(Figure 1). 

NOTE: Air tool oil not provided; it is available 
at most major hardware and tool stores. SAE 
#10 oil or sewing machine oil may be used 
as a substitute. Do not use detergent oil. 

Summary of Contents for JAT-900

Page 1: ... Hammer 505900 JAT 900 505901 JAT 901 505902 JAT 902 Operation Parts Manual M 505900 Edition 2 06 2015 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET JAT 901 shown ...

Page 2: ...t with 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...

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: ...Compressed air can be harmful if directed toward sensitive areas of the body and may propel small 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 ...

Page 5: ...forth 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 w...

Page 6: ...dB A 108 dB A 112 dB A Speed setting Variable Variable Variable Grip Pistol style Pistol style Pistol style Overall Length 5 1 4 in 133 4 mm 6 3 4 in 171 5 mm 9 in 228 6 mm Housing material Aluminum Aluminum Aluminum Net weight 3 28 lb 1 49 kg 4 21 lb 1 91 kg 4 54 lb 2 06 kg Shipping weight 3 57 lb 1 62 kg 4 52 lb 2 05 kg 4 85 lb 2 20 kg 1 The specified values are emission levels and are not neces...

Page 7: ... Set air pressure to 90 psi IMPORTANT Connecting a quick change coupling directly to the tool is not recommended as vibration may cause the connection to fail Instead add a leader hose and install any quick change couplings farther down the line 5 Adjust speed with air regulator knob 6 Hold air hammer with both hands and press chisel blade against target surface Press trigger to begin hammering ac...

Page 8: ...ifications the following are among the most common causes See also Troubleshooting section Contaminated air such as a dirty air system or water in the system Using wrong size tool for the job Poor maintenance practices such as using excessive air pressure or air volume Improper or no lubrication Rule of Thumb If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wre...

Page 9: ...d If greasing is required use a grease that is highly water resistant for the front case components on air impact wrenches grinders and sanders Recycling Protect the environment Your tool contains materials which can be recovered or recycled When its useful life has expired please leave tool at a specialized facility Figure 3 Recommended arrangement of air piping and air line system ...

Page 10: ...tion or speed remains constant when turning regulator Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Set regulator knob 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 tra...

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: ...lve stem 30 6mm 1 6 AH 17 O Ring 7 8x1 9 2 7 AH 9 Steel ball seat 1 8 AH 5 Throttle spring 1 Index Part No Description Qty 9 AH 7 O Ring 2x1 5 2 11 AH 10A Valve assembly 1 13 AH 2X Pin for trigger 3x14 1 14 AH 3X Pin for regulator 3x16 1 15 AH 15 1A Cylinder assembly incl piston 1 17 AH 19 Valve seat 1 18 J0101S Quick change spring retainer 1 JSG 1304 Set of 4 chisels 1 RBK 0101R Rebuild Kit conta...

Page 13: ...m 1 6 AH 17 O Ring 7 8x1 9 2 7 AH 9 Steel ball seat 1 8 AH 5 Throttle spring 1 Index Part No Description Qty 9 AH 7 O Ring 2x1 5 2 11 AH 10A Valve assembly 1 13 AH 2X Pin for trigger 3x14 1 14 AH 3X Pin for regulator 3x16 1 15 AH 15 2A Cylinder assembly incl piston 1 17 AH 19 Valve seat 1 18 J0101S Quick change spring retainer 1 JSG 1304 Set of 4 chisels 1 RBK 0204R Rebuild Kit contains 5 7 8 11 1...

Page 14: ...lve stem 30 6mm 1 6 AH 17 O Ring 7 8x1 9 2 7 AH 9 Steel ball seat 1 8 AH 5 Throttle spring 1 Index Part No Description Qty 9 AH 7 O Ring 2x1 5 2 11 AH 10A Valve assembly 1 13 AH 2X Pin for trigger 3x14 1 14 AH 3X Pin for regulator 3x16 1 15 AH 15 3A Cylinder assembly incl piston 1 17 AH 19 Valve seat 1 18 J0101S Quick change spring retainer 1 JSG 1304 Set of 4 chisels 1 RBK 0304R Rebuild Kit conta...

Page 15: ...JET 15 This page intentionally left blank ...

Page 16: ...16 JAT 900 901 902 Pneumatic Hammer 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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