Jet JAT-320, JAT-321 Operations & Parts Manual

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Pneumatic Ratchet Wrench

#505320, JAT-320 #505321, JAT-321

Operation & Parts Manual

M-505320

Edition 1

02/2015

JET

427 New Sanford Road

LaVergne, T N 37086

Ph.: 800- 274- 6848

www.jettools.com

Warranty and Service

–

JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.

Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website.

• JET products carry a limited warranty which varies in duration based upon the product. (See chart below)

• Accessories carry a limited warranty of one year from the date of receipt.

• Consumable items are defined as expendable parts or accessories expected to become inoperable within a

reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.

Who is Covered

This warranty covers only the initial purchaser of the product from the date of delivery.

What is Covered

This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood. Use of these machines in the processing of metal, plastics, or other materials outside recommended guidelines, may void the warranty. The exceptions are acrylics and other natural items that are made specifically for wood turning.

Warrant y Limitations

Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.

How to Get Technical Support Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof of initial purchase when calling. If a product requires further inspection, the Technical Service representative will explain and assist 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 State Law Applies

This warranty gives you specific legal rights, subject to applicable state law.

Limitations on This War ra nt y

JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. JET SHALL IN NO EVENT BE LI A B L E FOR DEA TH, INJURI E S TO PERSONS OR PROPERTY , OR F OR INCIDE NTA L , CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are given as general information and are not binding. JET reserves the right to effect at any time, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever. JET sold in Canada by JPW I ndustries, Inc.

Product Listing with Warranty Period

90 Days 1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools 2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used for industrial or commercial purposes 5 Year – Woodworking Machinery Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist Accessories; Shop Tools; Warehouse & Dock products; Hand Tools

NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries, Inc., or any of its successors in interest to the JET brand.

Parts; Consumable items; Light-Duty Air Tools

branded products are not

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Safety warnings

General air tool warnings

1. Read and understand this entire manual bef ore attempti ng assembl y or op erat i on .

2. Read and un derstan d all warn ings post ed on the tool and in this m anual . Fai lure t o c ompl y with all of th ese warni ngs may caus e seri ous injury.

3. Replace warning labels if they become obscured or remo ved.

4. Do not use this tool for other than its intended use. If used for other purposes, JET disclaims any real or implied warranty and holds itself harmless from any injury that may result from that use.

5. Al ways wear app roved saf ety gl ass es or fac e shield while using this tool. (Everyday eyeglasses only have impact resistant lenses; they ar e not safet y glas ses.)

6. Wear ear protectors (plugs or muffs) if the noise exceeds safe levels.

7. Wear gloves and protective clothing if oper ation pr oduces sparks or fl ying p articles. Gloves should be tight-fitting, withou t frayed fing ers or hanging threads . Keep han ds and body aw ay from the work ing area of to ol.

8. Some dust created by power sanding, sawing, grinding, drilling and other construction acti viti es c ontai ns c hem ic als know n t o c aus e cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead based paint.

• Crystalline silica from bricks, cement and other m as onry prod uc ts .

• Arsenic and chromium from chemically treated lumber.

Your risk of exposure varies, depending on how often you do this t yp e of w ork. To reduc e your e xposure to t hese chemic als, wor k in a well-ventilated area and work with approved safety equipmen t, 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 withou t a w ork l oad on the tool .

10. The air tool must be properly lubricated before oper atin g.

11. Never start a percussion type air tool (chipper, breaker, buster, etc.) without securing the tooling in the retainer and placing the tip against the work surface.

12. Do not operate air tool without its guards in place. Do not modify the tool.

13. Do not operate this tool whi le tired or und er the influence of drugs, alcohol, or any medication.

14. Adopt a comfortable posture with proper balance, and maintain secure footing at all times. Non-slip footwear or anti-skid floor strips ar e recommend ed.

15. Do not wear loose clothing or jewelry. Confine long hair.

16. Excessive air pressure and too much free rotati on may decr eas e lif e of th e tool an d may caus e a haz ar d ous sit u at i on.

17. Check air hoses for wear, and keep them away f rom heat and s harp ed ges. R epair or replace damaged air hose immediately. Do not carry tool by the air hose.

18. Air hose may cause tripping hazards; keep hose away from traffic areas.

19. D o not us e this tool n ear flammabl e objects, or in potentially explosive environments. Do not use near live electrical wires.

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JET 3

20. Do not use power tools in damp or wet locat ion, or expose t hem t o rain. Keep w ork area well lighted.

21. Do not leave a connected tool unattended. When not in use, disconnect tool from air source.

22. Shut off air supply and discharge any residual pressure from tool before removing hose, making adjustments, changing accessories, or storing tool.

23. Make sure tool is switched off, and your finger off the trigger, before connecting to air supply.

24. Remo ve adj ustin g keys and wr ench es bef or e turnin g on t ool.

25. Keep visitors a safe distance from the work area. Keep children away.

26. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are careless acts that can result in serious injury.

27. D o not forc e a tool or att achm ent to do a job for which it was not designed. The righ t tool will do the job better and more safely.

28. Repetitive motions and/or exposure to constant vibration can be harmful to hands and arms. Take frequent breaks and relax hands during extended operation. Change posture to avoid dis comf ort or f at ig u e.

29. Compressed air can be harmful if directed toward s ensiti ve ar eas of the bod y, and may propel small particles caught in the air stream. Exerc ise proper c auti on.

30. Use only recommended accessories; impr op er access ories may be haz ar d ous .

31. Maint ain t ools with care. Keep air t ool 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 f or the tool. Th es e can present r isk of explosion and serious injury.

33. Do not lubricate the tool with combustible liquids, such as kerosene, diesel or jet fuel.

34. Do not dispose of this tool with normal household waste. Never dispose of the air tool into fire.

Specific warnings for Ratchet Wrench

35. T his r atchet wr ench is d es i gn ed for rem oving and ins t alli ng t hr eaded f asten ers , p artic ul arly in areas diff icult to acc ess wi th other tools. If you are not f amiliar with th e prop er and saf e operation of a pneumatic ratchet wr ench, do not use until proper training and knowledge have been obtai n ed.

36. Us e onl y s ock ets in good condi t i on.

37. Never hold socket, drive or drive extension with your hand dur in g op eration.

38. Make sure workpiece is secure and will not shift while operating impact wrenc h. Do not hold workpieces with your hand.

39. Make sure fastener can withstand rated torque of ratchet wrench.

Familiarize yourself with the following safety notices used in this manual:

Th is means t hat if preca utions are not he eded, it may resu lt in serio us, or ev en

fatal, injury.

This means that if precautions are not heeded, it may result in minor injury and/or

possible tool damage.

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About this manual

This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JAT-320 and JAT-321 Pneumatic Ratchet Wrench. This manual contains instructions on safety precautions, general operating procedures, maintenance procedures and parts breakdown. Your tool has been designed and c onst ruct ed t o pr ovid e c onsis tent , l ong- ter m oper ation if us ed in acc ord anc e with th e ins tr ucti ons s et fo rth in this docu ment .

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 oper ati on, safet y of op erator and b yst an d ers sh ou ld be fir s t priority.

If th ere are ques ti ons or comments, pl eas e contact you r local su pp lier or J E T . J E T can also be reac h ed at our web site: www.jettools.com.

Record the serial number and purchase information of your tool on the cover of this manual for quick access. Retain this manual for future reference. If the tool transfers ownership, the manual should accompany it.

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JET 5

Tool speci fications

Model number JAT-320 JAT-321

Stock number 505320 505321 Square drive 1/ 4 in. 3/8 in. Bolt capacity 5/16 in. 5/16 in. Anvil retainer type Hog ring Ball detent Impact me chanism Single hammer Single hammer Maximu m torq u e 50 lbf•ft (67.8 N•m) 50 lbf•ft (67.8 N•m) Working torque 10-35 lbf•ft (13.6-47.5 N•m) 10-35 lbf•ft (13.6-47.5 N•m) Free speed 700 RPM 700 RPM Average air consumption 3.1 CFM 3.1 CFM Air inle t 1/4 in. NPT 1/4 in. NPT Air hose inside diameter 3/8 in. 3/8 in. Required air pres s ure 90 psi (62 1 kP a) 90 psi (62 1 kP a) Vibration value 8.6 m/s2 13.7 m/s2 Nois e lev el 1 102 dB(A) 101 dB(A) Power setting variable, forward and reverse

vari abl e, forward and revers e

Grip Inline Inline Overall Length 6.5 in. (165.1 mm) 6.5 in. (165.1 mm) Housing ma terial Aluminum with rubber grip Aluminum with rubber grip Net weight 1.32 lb. (0.60 kg) 1.32 lb. (0.60 kg)

Shipping weight 1. 3 4 lb. (0.6 1 kg) 1.34 lb. (0.61 kg)

The specif ied val ues ar e emiss ion l evels an d ar e not nec ess aril y to be seen as s afe oper atin g levels . As workpl ac e condit i ons var y, this informat ion is int end ed to al low the us er to mak e a better esti mati on of th e hazards and risks involve d only.

Specifications were current at time of publication, but because of our policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

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Setup an d A ss em bly

Any missing parts or damage should be reported immediately to your JET damaged tool. Read this instruction manual thorou g hl y for oper at i on , m ai ntenance and s afety instructions.

distr ibutor. Do not use a

5. Turn direction switch to forward (F) or reverse (R) rotation.

Make sure nut or bolt can

withstand rated torque of ratchet wrench. To loosen nut or bolt:

Box contents :

1 Ratchet wrench 1 Operat i on and p ar ts m anu al 1 Warranty card

Operation

The ratchet wrench must be

properly lubricated before operation. See “Lubricati on” se ctio n.

1. Select reverse rotation.

2. Place socket over nut, and grip tool firmly with both hands.

3. Gently squeeze throttle lever. Important: If tool cannot loosen nut, DO

NOT raise air pressure above 90 psi. If tool’s air regulator is in low setting, raise setting and r etry. If tool’s regulator is already at

maximum, do not continue attempts to loosen nut wit h this r atch et wren ch. Use

other methods or tools to loosen nut.

4. Release throttle lever to stop ratchet wrench.

To tighten nut or bolt:

1. I ns t all nu t as far as possib le by hand.

2. Select forward rotation.

3. Place socket over nut, and grip tool firmly with both hands.

4. Gently squeeze throttle lever.

Figure 1

1. Remove protecti v e cap from air i nl et (Figur e

1). If an in-line oil er is not bei ng used, add 4 or 5 dr ops of air t ool oil ( not i nclud ed) i n to the air inl et.

2. 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.

3. P ush dri ve sock et (not includ ed) ont o anvil until it clicks into position.

4. Rotate air regulator dial for desired speed.

Important: If tool s talls wh il e tight eni ng , D O NOT raise air pressure above 90 psi. If tool’s air regulator is in low setting, raise setting and retry. If nut will not tighten on

maximum setting, do not continue attempts to tighten nut with the ratchet wrench. Use other methods or tools to

tight en nu t.

5. Release throttle lever to stop ratchet wrench. NOT E: Do not overt ig hten. F ast eners with cri tic al

torque settings should be fully tightened with a torqu e wr enc h.

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JET 7

Maintenance

Lubrication

The ratchet wrench should be lubricated daily (or before each use) with air tool oil through the air inlet. Durin g conti nual op erati on, it s hould b e reoiled every 1 to 2 hours. This can be done with an in-line oiler, or manually. If done manually, proc eed as f oll ows :

1. D is c onn ec t air h os e from tool.

4. Drain water f rom air com press or tan k dail y, as well as any condens ation from air lin es . W ater in the air lin e may enter the tool an d cause damage.

5. C h ang e f ilt er s on the air syst em on a reg ul ar basis.

6. Air-line pressure may be increased accor di n gl y to c omp ensate f or ext ra-long air hoses (usually over 25 feet). Inside diameter of hos e sh oul d b e mini m um 3/8-inc h .

2. P l ac e 4 or 5 dr ops of air tool oil into air inlet. NOTE: Air tool oil not provided; it is available

at most major hardware and tool stores. SAE #10 oil or s ewing mach ine oil may b e us ed as a substitute. Do not use detergent oil.

3. Re-connect air. Run ratchet wrench at low throttle without load for a few seconds to distri bu te the oil thr oug h out t ool.

4. When finished operating ratchet wrench, disconnect air hose. Wipe off housing with a dry cloth. Place 4 or 5 drops of air tool oil into air inlet; re-connect air and run tool for a few seconds t o distribut e the oil. Disconnect air.

The ratchet wrench has been pre-greased from the manufactur er, an d it is g en er al l y unn ec es sary to grease the tool during its normal life. However, should th e tool req uir e fut ur e s ervici ng, a gr eas e fitting is supplied atop the housing. Us e Lithium Compl e x M oly 2 greas e or equi valent.

Storage

Avoid storing the ratchet wrench in very humid locations which promotes rusting of internal mechan isms. A lways oil t he tool and disc onnect air hose before storage.

Air system requi rements

1. Use proper air hose size (refer to tool specifications). The hose should be just long enough to serve the working area. Excessive hose len gt h wil l c ause pressur e drop.

2. Make sure air compressor supplies clean, dry air at correct CFM for the

Set air pressure to 90 psi.

tool.

General Air Tool Information

If the air tool is not performing according to specif ications , th e foll owing are am ong t he most common causes. (See also “Troubleshooting” section.)

• C ontamin ated air suc h as a dirty air system or water in the system.

• Using wrong size tool for the job.

• P oor main tenanc e pr actic es, suc h as us in g

excess i ve air press ure or air volume.

• Improper or no lubrication.

Rule of Th um b

If it takes more than 8 seconds to tighten or loosen a bolt or nut with an air impact wrench at maxim um settin g, the air wrenc h is too s mall or the air compressor CFM is not powerful enough for the job. Continued use in either capaci ty will cause damage to the tool.

Tool Pressure

JET Air Tools oper ate on 70-t o-100 psi ( pounds per square inch) air 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.

Excess air pressure

and/or un clean air will shor ten the tool’ s life and may create a hazardous situation.

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W hen using multip le hos es, air hoses shou ld be larger than leader hose. Join multiple hoses directly, rather than with quick connect fittings which m ay caus e pressure dr ops and tool power reduction.

Use anti-whip devices across hose couplings to prevent hose from whipping in the event of a hose failur e or c oup li ng dis connec t.

Always us e m oist ure tr aps at th e c ompr ess or f or the main distr ib ut ion line. Use mois ture traps an d in-lin e oilers on eac h down line th at is to be used for air tools. (See Figure 2). Place oiler as close to air tool as possible f or best lubric ati on.

Lubrication

Use a lig ht oil contai ning rust in hibitors, such as SAE #10. Many JET air tools have integral oil reservoirs, which should be kept filled when in-line oilers ar e not used.

If greasing is required, use a grease that is highly water resis tant for f ront c ase c ompon ents on air impact w renches, gr in d ers and sander s .

Recycling

Protect the environment. Your tool contains materials which can be recovered or recycled. W hen its us eful life has expired, please leave tool at a specialized facility.

Recommended arrangement of air piping and air line system

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Figure 2

JET 9

Troubleshooting JAT-320/321 Ratchet Wrenches

Any dis ass embly of the tool sh ould be don e by qualif ied servic e personnel. F or problems not ad dressed below, contact JET technical service at 800-274-6846.

Problem Possible cause Remedy

Tool will not st art . Air valve cl os ed or obs tr uc t ed. Open val v e; cl ear an y obstruct i ons .

Dirt or gu m d eposits on components.

Rotor van es or ot h er c om ponents are wor n.

Thr ottl e l ever inoper ab l e. Clean throttl e lev er m ech an is m to

Bearin g( s ) w orn. Dis assemble and i ns p ect bearing.

Exc essive or abn orm al vibration.

Abnormal sound. Loose fasteners. Check tightness of housing and

Loss of power; erratic action.

Ratchets sufficiently, but will not remove fastener.

Housing become s hot durin g op eration.

Sever e air l eak ag e. (Note: M inim a l escape of air is oft en n or m al f or air tools.)

Bearin gs w orn. D isassemble and insp ect bearin g.

Low air pressure. Verify compressor has proper CFM

Moisture or obstr uction in air hose.

Impr op er size of air tr ans m is s i on lines, h oses, fitti ngs , or couplings.

Dirt or gu m d eposits on components.

Rotor van es are worn. Repl ac e van es (entir e set ). Worn socket. Use good condition sockets. Stripped nut/ b olt. Use oth er m eans to rem ove. Insuf f ic i ent lubric ation . Lubricate with air to ol oi l. Worn components. Replace components as needed. Air valv e obs truct ed or dam aged. Clean or rep l ac e.

Housi ng loose or damag ed. Tight en or r ep l ac e as n eed ed.

Flush tool wit h gu m s olvent. If problem persists, disassemble, clean and lubricate internal parts.

Repl ac e w orn c om p onents. (Replace vanes as an ent ir e s et. )

ensure free movement. Replace mechanism if needed.

Greas e or r eplace as need ed .

external fasteners.

rating for tool. Che ck compressor regu lator setting; set air pressure to 90 psi. Check for loose connections.

Air supply must be clean and dry. Clean ou t air h os e(s ) and r em ov e any ki nks or b ends .

Use appr opriat e-si z ed air lines/hoses. Verif y pr op er f itt in gs / couplin gs .

Flush tool wit h gu m s olvent. Check and cl ean air filt er on compress or. Clean e xt er n al areas of tool . If problem persists, disassemble, clean and lubricate internal parts.

10 JAT-320,321 Ratchet Wrenches

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Replac em e nt par t s

Service parts are listed on the following pages. To order parts or reach our service department, call 1-800274-6 848 Mon day thr ough Fr iday, 8: 00 a.m. to 5:00 p. m. CST. P leas e have the st ock num ber an d serial number of y our t ool available when you c all, so that we m ay s er v e yo u quickly an d acc u r ately.

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JET 11

#505320, JAT-320, 1/4-inch Ratchet Wrench – exploded view

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12 JAT-320,321 Ratchet Wrenches

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#505320, JAT-320, 1/4-inch Ratchet Wrench – parts list

Index Part No. Description Qty

1 JAT320-01 Air inlet 1 2 JAT320-02 Motor housing 1 3 JAT320-03 Throttle valve 1 4 JAT320-04 Spring 1

5 JAT320-05 6 JAT320-06 Valve screw 1

7 JAT320-07 Pin ø4x14.8 8 JAT320-08 Rubber grip 1

9 JAT320-09 Throttle lever 1 10 JAT320-10 Spring pin ø2.5x 18 1050 1 14 JAT320-14 Spring pin ø2x16 1 15 BB-696ZZ Ball bearing 696ZZ 1 16 JAT320-16 Rear end plate 1 17 JAT320-17 Cylinder 1 18 JAT320-18 Rotor 1 19 JAT320-19 Rotor vane 4 20 JAT320-20 Front end plate 1 21 BB-608ZZ Ball bearing 608ZZ 1 22 JAT320-22 Hammer case 1 23 JAT320-23 O-Ring S32 ø31.5x2 NBR 1 24 JAT320-24 Rubber ring 1 26 JAT320-26 Coupling nut 1 27 BB-6901ZZ Ball bearing 6901ZZ 1

O-Ri ng P8 NBR A70±5 ø7.8x1.9

Index Part No. Description Qty

30 JAT320-30 Ratchet housing assembly 1 32 JAT320-32 Drive bushing 1 33 JAT320-33 Ratchet yoke 1 34 JAT320-34 Rat chet housing cov er 1 35 JAT320-35 Direction switch 1 36 JAT320-36 Thrust washer 1 37 JAT320-37 Spring pin ø2x5 1050 1 38 JAT320-38 Ratchet anvil assembly 1/4in. 1 41 JAT320-41 Spring 1 42 JAT320-42 Pin 1 43 JAT320-43 Ratchet pawl 1 44 JAT320-44 Pin 1 45 JAT320-45 Thrust washer 1 47 JAT320-47 Retainer IRTW-20 1 48 JAT320-48 Hammer cage 1 49 JAT320-49 Hammer 1 50 JAT320-50 Hammer pin 2 51 JAT320-51 Hammer cam 1

52 JAT320-52 53 JAT320-53 Air regulator 1

54 JAT320-54 Retainer 1 55 JAT320-55 Spring 2 56 JAT320-56 Steel ball S UJ2 3mm 2

O-Ri ng AS022 ø25. 12x1.78 NBR

JAT321-RPK, Repair Kit, contains 4,5,19(4),23,41,47,52,54 JAT320-RBK, Rebuild Kit, contains 16,20,32,36,41,42,43,50(2)

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JET 13

#505321, JAT-321, 3/8-inch Ratchet Wrench – exploded view

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14 JAT-320,321 Ratchet Wrenches

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#505321, JAT-321, 3/8-inch Ratchet Wrench – parts list

Index Part No. Description Qty

1 JAT320-01 Air inlet 1

2 JAT320-02 Motor housing 1

3 JAT320-03 Throttle valve 1

4 JAT320-04 Spring 1

5 JAT320-05

6 JAT320-06 Valve screw 1

7 JAT320-07 Pin ø4x14.8

8 JAT320-08 Rubber grip 1

O-Ri ng P8 NBR A70±5 ø7.8x1.9

Index Part No. Description Qty

30 JAT320-30 Ratchet housing assembly 1 32 JAT320-32 Drive bushing 1 33 JAT320-33 Ratchet yoke 1 34 JAT320-34 Rat chet housing cov er 1 35 JAT321-35 Direction switch 1 36 JAT320-36 Thrust washer 1 37 JAT320-37 Spring pin ø2x5 1050 1 38 JAT321-38 Ratchet anvil assembly 3/8in. 1 41 JAT320-41 Spring 1 42 JAT320-42 Pin 1 43 JAT320-43 Ratchet pawl 1 44 JAT320-44 Pin 1 45 JAT320-45 Thrust washer 1 47 JAT320-47 Retainer IRTW-20 1 48 JAT320-48 Hammer cage 1 49 JAT320-49 Hammer 1 50 JAT320-50 Hammer pin 2 51 JAT320-51 Hammer cam 1

52 JAT320-52 53 JAT320-53 Air regulator 1

54 JAT320-54 Retainer 1 55 JAT320-55 Spring 2 56 JAT320-56 Steel ball S UJ2 3mm 2

O-Ri ng AS022 ø25. 12x1.78 NBR

JAT321-RPK, Repair Kit, contains 4,5,19(4),23,41,47,52,54 JAT321-RBK, Rebuild Kit, contains 16,20,32,36,41,42,43,50(2)

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JET 15

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427 New Sanford Road

LaVergne, Tennessee 37086

Phone: 800-274-6848

www.jettools.com

Jet JAT-320, JAT-321 Operations & Parts Manual

Specifications and Main Features

Frequently Asked Questions

User Manual