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JET   

 

20.  Do not use power tools in damp or wet 

location, or expose them to rain. Keep work 
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.  Remove adjusting keys and wrenches before 

turning on tool. 

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.  Do not force a tool or attachment to do a job 

for which it was not designed. The right 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 discomfort or fatigue. 

29.  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 air 
source for the tool. These can present risk 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 Paving Breaker 

35.  This paving breaker is designed and intended 

for use by properly trained and experienced 
personnel only. If you are not familiar with the 
proper and safe operation of a pneumatic 
paving breaker, do not use until proper 
training and knowledge have been obtained. 

36.  Use only correct steels with sharp cutting 

edge. Make sure steel is securely latched in 
paving breaker before pressing throttle lever. 

37.  Disconnect machine from air supply before 

changing tooling. 

38.  Always hold cutting tool down firmly on the 

work surface before pressing throttle lever. 

39.  Always grip paving breaker firmly with both 

hands. 

40.  Apply enough downward pressure to prevent 

tool from bouncing or skipping which can lead 
to personal injury and tool damage. 

41.  Direct tool exhaust away from yourself and 

others. 

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

 

This means that if precautions are not heeded, it may result in serious, or even 

fatal, injury.

 

  

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

possible tool damage.

 

 

 

Содержание 550660

Страница 1: ...neumatic Paving Breaker 550660 JCT 4660 550661 JCT 4661 Operation Parts Manual M 550660 Edition 2 05 2017 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2017 JET...

Страница 2: ...ucts Arsenic and chromium 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 ventilat...

Страница 3: ...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...

Страница 4: ...s 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...

Страница 5: ...3 m s2 Noise level 1 108 dB A 110 dB A Overall length 36 5 in 927mm 29 6 in 751 8mm Housing material steel steel Oil reservoir capacity 18 cc 36 cc Net weight 66 lb 30 kg 92 4 lb 42 kg Shipping weigh...

Страница 6: ...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 f...

Страница 7: ...ad from cylinder and remove throttle valve throttle valve spring plunger and plunger spring 4 Remove valve guide valve valve chest valve seat valve chest dowel pin and piston 5 Remove cylinder tappet...

Страница 8: ...s 4 Assemble front head bolt springs front head lock washer and tighten front head bolt nut A minimum of three bolt threads should be visible 5 Assemble valve seat valve valve chest and valve guide in...

Страница 9: ...le 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 hoses should be larger than leader hose Joi...

Страница 10: ...ice JCT 4660 JCT 4661 Front Head Bolt 2 2 5mm 3mm Back Head Bolt 166 3 202 5 166 3 202 5 Front Retainer Bolt 43 4 57 8 43 4 57 8 Oil Tank Bolt 57 8 28 9 32 5 GD Plug 7 2 10 8 10 8 14 5 Air Inlet Assem...

Страница 11: ...al Loss of power erratic action Low air pressure or air volume Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Check for loose connection...

Страница 12: ...have entered during assembly Excessive heat develops in tool Improper lubrication Lubricate properly according to instructions in this manual Worn internal parts Inspect and replace as needed Tool con...

Страница 13: ...ugh 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 Non proprietary parts such as fa...

Страница 14: ...14 JCT 4660 series Paving Breaker 550660 JCT 4660 Paving Breaker 60 lb...

Страница 15: ...e chest dowel pin 1 4x20L 1 25 JCT4660 25 Cylinder 1 Index Part No Description Qty 26 P91238 Air inlet screen 1 27 P91222 Air inlet swivel o ring 28 5x2mm 1 28 P91235 Air inlet swivel 1 29 P91237 O ri...

Страница 16: ...16 JCT 4660 series Paving Breaker 550661 JCT 4661 Paving Breaker 90 lb...

Страница 17: ...valve spring 1 25 P91202 Cylinder plug 5 26 JCT4661 26 Cylinder 1 Index Part No Description Qty 27 P91238 Air inlet screen 1 28 P91222 Air inlet swivel o ring 28 5x2mm 1 29 P91235 Air inlet swivel 1...

Страница 18: ...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 Servi...

Страница 19: ...JET 19 This page intentionally left blank...

Страница 20: ...20 JCT 4660 series Paving Breaker 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...

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