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WARNING 

 

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 paving breaker, do 

not use until proper training and knowledge has been obtained. 

 

• 

Always wear approved impact resistant eye protection. 

 

• 

Always wear approved ear protection. 

 

• 

Always wear gloves and protective clothing. 

 

• 

Always direct the tool exhaust away from yourself and others. 

 

• 

Always disconnect the tool from the air supply when not in use. 

 

• 

Always check that the cutting chisel is securely latched in the tool before depressing the throttle 
trigger. 

 

• 

Always hold the cutting tool down firmly on the work before depressing the throttle trigger. 

 

• 

Some dust created by power sanding, sawing, grinding, drilling and other construction activities 
contains chemicals known to cause cancer, birth defects or other reproductive harm.  Some 
examples of these chemicals are: 

 

• 

Lead from lead based paint 

• 

crystalline silica from bricks and cement and other masonry products, and 

• 

arsenic and chromium from chemically-treated lumber. 

 

• 

Your risk from those exposures 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 those dust masks that are specifically designed to filter out microscopic particles 

 

• 

Do not operate tool while under the influence of drugs, alcohol or any medication. 

 
 

Specifications 

 

Model Stock 

No. 

Handle 

Type 

Shank 

Size 

Piston 

Dia. 

Piston 
Stroke 

Blows 

per 

Minute 

Ft/Lb. 

per Blow 
@ 90 PSI 

 

Overall 
Length 

CFM Air 

Hose 

ID 

Net 

lbs. 

Ship 

lbs. 

PB-60-1-1/8 550075 

“T” 

1-1/8”x6” 2-1/4”  5” 

1,400 

88.97  25-3/8”  58 

3/4” 

66 

72 

PB-60-1-1/4 550076 

“T” 

1-1/4”x6” 2-1/4”  5” 

1,400 

88.97  25-3/8”  58 

3/4” 

66 

72 

PB-90-1-1/8 550077 

“T” 

1-1/8”x6” 2-5/8” 6-1/2” 1,250  180.83 28-1/2”  77  3/4” 92-1/2 101 

PB-90-1-1/4 550078 

“T” 

1-1/4”x6” 2-5/8” 6-1/2” 1,250  180.83 28-1/2”  77  3/4” 92-1/2 101 

 
 
 
 
 
 
 
 
 
 
The specifications in this manual are given as general information and are not binding.  JWMH Tool 
Group reserves the right to effect, at any time and without prior notice, changes or alterations to parts, 
fittings, and accessory equipment deemed necessary for any reason whatsoever. 

Summary of Contents for JPB-60

Page 1: ...B 60 90 Paving Breakers WMH TOOL GROUP Industrial Division P O BOX 1349 Auburn WA 98071 1349 Ph 1 800 274 6848 Fax 1 800 274 6840 E mail jet wmhtoolgroup com www wmhtoolgroup com M 550075 12 02 Copyright WMH Tool Group ...

Page 2: ... abuse negligence or accidents normal wear and tear repair or alterations outside our facilities or to a lack of maintenance THE WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD SPECIFIED ABOVE FROM THE DATE THE PRODUCT WAS PURCHASED AT RETAIL EXCEPT AS STATED HEREIN ANY IMPLIED WARRANTIES OR MERCHANTIBILITY AND FITNESS ARE EXCLUDED SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IM...

Page 3: ...and other masonry products and arsenic and chromium from chemically treated lumber Your risk from those exposures 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 those dust masks that are specifically designed to filter out microscopic particles Do not operate tool while...

Page 4: ...ore storing the tool pour a few ounces of JET Marvel Air Tool Oil into the air inlet and momentarily operate the tool Troubleshooting Loss of power or erratic action Compressor producing insufficient air pressure for tool Compressor producing insufficient air volume for tool Moisture or debris in air hose Air hose undersize or in poor condition Inadequate air system lubrication Incorrect shank siz...

Page 5: ...en the air inlet swivel nut and remove it from the cylinder Remove the air inlet swivel Remove the air inlet screen from the cylinder Remove the O ring s from the air inlet swivel nut and air inlet swivel Repair Notes Air Leakage If air is leaking from the air inlet swivel nut or air inlet swivel change the O rings and check for loosening of the air inlet swivel nut If air is leaking from the thro...

Page 6: ...inlet swivel nut and tighten the nut Complete Assembly 1 Stand the front head assembly in the vertical position 2 Assemble the tappet seat and cylinder onto the front head making sure the retainer nut and exhaust port on the cylinder are in line with each other 3 Place the front head bolts into the holes 4 Assemble the front head bolt springs front head lock washer and tighten the front head bolt ...

Page 7: ... 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 Assembly 202 58 216 9 202 5 216 9 Torque setting for the front head bolt on the PB 60 and PB 90 is given as the measurement between the bottom of the nut and the end of the bolt ...

Page 8: ...8 Parts Breakdown for JPB 60 1 1 8 and JPB 60 1 1 4 ...

Page 9: ... 23 P91202 Cylinder Plug 3 24 P91208 Dowel Pin 1 4 x3 4 1 25 P61101 Cylinder 1 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 Ring 29 4x3 1mm 1 30 P91236 Air Inlet Swivel Nut 1 31 P91246 Plug 1 32 P61123 Back Head Bolt 4 33 P61139 Front Head Bolt 2 34 P91244 Rubber Plug 1 35 P61103 Piston Hammer 1 36 P61126 Tappet Seat 1 37 P61127...

Page 10: ...10 Parts Breakdown for JPB 90 1 1 8 and JPB 90 1 1 4 ...

Page 11: ...hrottle Valve 1 24 P91216 Throttle Valve Spring 1 25 P91202 Cylinder Plug 5 26 P91201 Cylinder 1 27 P91238 Air Inlet Screen 1 28 P91222 Air Inlet Swivel O Ring 28 5x2mm 1 29 P91235 Air Inlet Swivel 1 30 P91237 O Ring 29 4x3 1mm 1 31 P91236 Air Inlet Swivel Nut 1 32 P91246 Plug 1 33 P91223 Back Head Bolt 4 34 P91239 Front Head Bolt 2 35 P91244 Rubber Plug 1 36 P91203 Piston Hammer 1 37 P91226 Tappe...

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