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Universal Tool a Division of Florida Pneumatic Manufacturing Corporation 

851 Jupiter Park Lane, Jupiter FL 33458

Troubleshooting

Problem

Possible Cause

Solution

The tool runs slowly or will not 
operate.

There is grit or gum in the tool.

 

Flush the tool with air tool oil or gum solvent.

The tool is out of oil.

 

Lubricate the tool according to the lubrication 
instructions in this manual.

The air pressure is low.

 

Adjust the regulator on the tool to the 
maximum setting.

 

Adjust the compressor regulator to the tool’s 
maximum setting of 90 psi.

The air hose leaks.

 

Tighten and seal the hose fittings with pipe 
thread tape if leaks are found.

The air pressure drops.

 

Ensure the hose is the proper size. Long 
hoses or tools using large volumes of air may 
require a hose with an I.D. of ½" or larger 
depending on the total length of the hose.

 

Do not use a multiple number of hoses 
connected together with a quick connect 
fitting. This causes additional pressure drops 
and reduces the tool power. Directly connect 
the hoses together.

There is a worn rotor blade in the motor. 

 

Replace the rotor blade.

There is a worn ball bearing in the motor.

 

Remove and inspect the bearing for rust, dirt, 
and grit. Replace or clean and grease the 
bearing with bearing grease.

There is moisture blowing out 
of the tool’s exhaust.

There is water in the tank.

 

Drain the tank. (See the air compressor 
manual for instructions.) Lubricate the tool 
and run it until water is not evident. Lubricate 
the tool again and run for 1-2 seconds.

Warranty

Limited Warranty: Universal Tool warrants its tools to be free from defects in material and workmanship for one year from the date of 
purchase. This warranty does not apply to tools which have been abused, misused, modified or repaired by someone other than Universal 
Tool or its authorized service centers. If a UT tool proves defective in material or workmanship within one year after purchase, return 
it to any authorized service center or Universal Tool freight prepaid. Please enclose your name, address and adequate proof of date of 
purchase and a short description of the defect. Universal Tool will,at its option, repair or replace defective tools free of charge. Repairs or 
replacements are warranted as described above for the remainder of the original warranty period. Universal Tool's sole liability  and your 
exclusive remedy under this warranty is limited to repair or replacement of the defective tool.
There are no other warranties expressed or implied and Universal Tool shall not be liable for incidental, consequential or special damages, 
or any other damages,costs or expenses excepting only the cost or expense of repair or replacement as described above.

Summary of Contents for Universal Tool UT8728

Page 1: ... Always become familiar with all the instructions and warnings before operating any pneumatic tool TABLE OF CONTENTS General Safety Information 2 Air Compressor and Air Tool Safety 2 3 Tool Specifications 3 Installation 4 Maintenance Lubrication 4 Operation 5 Troubleshooting 6 Service Parts 7 10 Warranty 11 UT8728 UT8729 DIE GRINDER SERIES UT8728E Extended Die Grinder UT8728 Die Grinder UT8729 12 ...

Page 2: ... used in a dust filled environment exhaust air can cause a dust hazard Dusts and fumes generated when using power tools can cause ill health for example cancer birth defects asthma and or der matitis risk assessment of these hazards and implementation of appropriate controls of is essential Risk assessment should include dust created by the use of the tool and the potential for disturbing existing...

Page 3: ...use accessories with an RPM rating that meets or exceeds the tool RPM rating 3 Never adjust the die grinder adjust the collets or change the mounted stones or mounted burrs unless the air supply and air hose is disconnected from the die grinder 4 Only personnel trained in the correct methods to adjust collets and change mounted stones and mounted burrs should conduct these operations 5 Always ensu...

Page 4: ...ly check and fill the in line lubricator with air tool oil Avoid using excessive amounts of oil Adjust the in line lubricator by placing a sheet of paper next to the tool s exhaust ports and holding the throttle open approximately 30 seconds The lubricator is properly set when a light stain of oil collects on the paper If it is necessary to store the tool for an extended period of time overnight w...

Page 5: ...ging accessories Loosen the collet nut with the collet wrench Pull the grinding stone out and tighten the collet nut with the collet wrench 4 Grinding and deburring WARNING You must wear the ANSI approved eye protection during the operation failure to follow this this may result in serious injury or damage to the operator WARNING Hearing protection is strongly recommended A protective respirator i...

Page 6: ...grease There is moisture blowing out of the tool s exhaust There is water in the tank Drain the tank See the air compressor manual for instructions Lubricate the tool and run it until water is not evident Lubricate the tool again and run for 1 2 seconds Warranty Limited Warranty Universal Tool warrants its tools to be free from defects in material and workmanship for one year from the date of purc...

Page 7: ... FLORIDA PNEUMATIC COM Please contact 1 800 356 3392 for further assistance Service Parts Exploded View Drawing UT8728 Die Grinder ...

Page 8: ...Universal Tool a Division of Florida Pneumatic Manufacturing Corporation 851 Jupiter Park Lane Jupiter FL 33458 Service Parts Exploded View Drawing UT8728E Extended Die Grinder ...

Page 9: ...RING 1 27 9872927 ANGLE COLLET BODY 1 7 9872807 AIR REGULATOR 1 28 9308024 1 4 COLLET 1 8 9OR 1898 AIR REGULATOR O RING 2 29 9872829 COLLET NUT 1 9 9OR7718 VALVE CAP O RING 1 30 9308026 COLLET WRENCH 2 10 9308010 THROTTLE VALVE CAP 1 31 9872931 ANGLE HEAD NUT 1 11 9872811 DEFLECTOR SILENCER 1 32 9872932 12 GEAR SET 1 1 12 9633811 DEFLECTOR O RING 1 33 9872933 ANGLE HEAD HEXAGON 1 13 9872813 DEFLEC...

Page 10: ... THROTTLE VALVE SPRING 1 27 9872927 ANGLE COLLET BODY 1 7 9872807 AIR REGULATOR 1 28 9308024 1 4 COLLET 1 8 9OR 1898 AIR REGULATOR O RING 2 29 9872829 COLLET NUT 1 9 9OR7718 VALVE CAP O RING 1 30 9308026 COLLET WRENCH 2 10 9308010 THROTTLE VALVE CAP 1 31 9872931 ANGLE HEAD NUT 1 11 9872811 DEFLECTOR SILENCER 1 32 9872932 18 GEAR SET 1 1 12 9633811 DEFLECTOR O RING 1 33 9872933 ANGLE HEAD HEXAGON 1...

Page 11: ... Universal Tool freight prepaid Please enclose your name address and adequate proof of date of purchase and a short description of the defect Universal Tool will at its option repair or replace defective tools free of charge Repairs or replacements are warranted as described above for the remainder of the original warranty period Universal Tool s sole liability and your exclusive remedy under this...

Page 12: ...umatic Manufacturing Corporation 851 Jupiter Park Lane Jupiter FL 33458 Universal Tool Questions problems missing parts Call Customer Service 8 a m 5 p m EST Monday Friday 1 800 356 3392 FLORIDA PNEUMATIC COM Retain this manual for future use ...

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