Jet JPB-60, JPB-90, PB-60-1-1/8, PB-60-1-1/4, PB-90-1-1/8 Owner's Manual

OWNER'S MANUAL

JPB-60 & 90 Paving Breakers

WMH TOOL GROUP

Industrial Division
P.O. BOX 1349
Auburn, WA 98071-1349
Ph: 1-800-274-6848 ▪ Fax: [phone]
E-mail: [e-mail]
www.wmhtoolgroup.com M-550075 12/02

Copyright © WMH Tool Group

This manual has been prepared for the owner and operators of a Paving Breaker. Its purpose, aside from
machine operation, is to promote safety through the use of accepted correct operating and maintenance
procedures. Completely read the safety and maintenance instructions before operating or servicing the
machine. To obtain maximum life and efficiency from your tool, and to aid in using the machine safely,
read this manual thoroughly and follow instructions carefully.

Warranty & Service

The WMH Tool Group warrants every product it sells. If one of our tools needs service or repair, one of
our Authorized Repair Stations located throughout the United States can give you quick service.

In most cases, any one of these WMH Tool Group Repair Stations can authorize warranty repair, assist
you in obtaining parts, or perform routine maintenance and major repair on your JET, Performax, Wilton,
or Powermatic tools.

For the name of an Authorized Repair Station in your area, please call 1-800-274-6848, or visit
www.wmhtoolgroup.com

More Information

Remember, the WMH Tool Group is consistently adding new products to the line. For complete, up-to­date product information, check with your local WMH Tool Group distributor, or visit
www.wmhtoolgroup.com

WMH Tool Group Warranty

The WMH Tool Group (including JET, Performax, Wilton and Powermatic brands) makes every effort to
assure that its products meet high quality and durability standards and warrants to the original retail
consumer/purchaser of our products that each product be free from defects in materials and workmanship
as follow: 1 YEAR LIMITED WARRANTY ON ALL PRODUCTS UNLESS SPECIFIED OTHERWISE.
This Warranty does not apply to defects due directly or indirectly to misuse, 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 IMPLIED WARRANTY LASTS, SO THE
ABOVE LIMITATION MAY NOT APPLY TO YOU. THE WMH TOOL GROUP SHALL IN NO EVENT BE
LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL,
CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO
YOU.

To take advantage of this warranty, the product or part must be returned for examination, postage
prepaid, to an Authorized Repair Station designated by our office. Proof of purchase date and an
explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, we
will either repair or replace the product, or refund the purchase price if we cannot readily and quickly
provide a repair or replacement, if you are willing to accept a refund. We will return repaired product or
replacement at WMH Tool Group’s expense, but if it is determined there is no defect, or that the defect
resulted from causes not within the scope of WMH Tool Group’s warranty, then the user must bear the
cost of storing and returning the product. This warranty gives you specific legal rights; you may also have
other rights which vary from state to state.

The WMH Tool Group sells through distributors only. Members of the WMH Tool Group reserve 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.

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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.

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.

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.

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Air Hose and Connections

Daily Service

To maintain optimum tool performance, the following service is required on a daily basis:

CAUTION

Operating the tool without air lubrication, even for just a few minutes, can severely damage the

valve parts, cylinder, and piston. Such damage is not covered by your tool warranty.

• Be sure the inline oiler has lubricant and is working properly.

• Drain the air system moisture trap.

• Be sure the air pressure is regulated to no more than 90 PSI.

• Pour several ounces of JET Marvel Air Tool Oil into the tool inlet before connecting to the air supply.

• Before 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 size.

• Excessively worn shank.

• Loose side, or back head bolts. Loose bolts can cause loss of power and tool damage. Checking

bolt torque weekly when the tool is in regular use is recommended.

• Tool is badly worn or has internal damage.

Air leakage, low impact, low bpm, tool operates with throttle off, loose chisel, steel retainer latch
does not catch:

• See Repair Notes for additional information.

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