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drive ends are not excessively 
worn which may allow the socket 
to come off during rotation.

• Use only impact sockets and 
accessories in good condition, as 
poor condition or hand (chrome) 
sockets or accessories can 
shatter and become a projectile 
when used with power tools.

Dust and Fume Hazards

• Wear appropriate respiratory 
protection if dust or fumes are 
present in the work area.

• Dust and fumes generated 
when using power tools, and 
existing dust disturbed by their 
use can cause ill health (for 
example, cancer, birth defects, 
asthma and/or dermatitis,). Risk 
assessment and implementation 
of appropriate controls for these 
hazards are essential. The priority 
shall be to control them at the 
source.

• Direct the exhaust so as to 
minimize disturbance of dust in a 
dust-filled environment.

• All integral features or 
accessories for the collection, 
extraction or suppression of 
airborne dust or fumes should be 
correctly used and maintained 
in accordance with the 
manufacturer’s instructions.

Prevent exposure and inhalation 
of harmful dust and particles 
created by power tool use.

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

•  Lead from lead based paints
•  Crystalline silica from bricks 

and cement and other 
masonry products 

•  Arsenic and chromium from 

chemically treated lumber

• Your risk from these 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 dust masks that are 
specially designed to filter out 
microscopic particles.

Entanglement Hazards

• Entanglement of loose clothing, 
personal jewelry, neckwear, hair, 
gloves or other items can occur if 
not kept away from the working 
end of the tool. Entanglement 
can result in choking, scalping, 
lacerations, broken bones and/or 
severed extremities.

Safety

Summary of Contents for 750SS Series

Page 1: ...Industrial Air Tools 750SS 3 4 Impact 751SS 1 Model also available 754SS 4 Spline Model also available 1 800 521 8104 www michiganpneumatic com Manual...

Page 2: ...tainer Anvil 4 Spline Anvil The 750SS Series Impact offers the highest power to weight ratio in a 3 4 impact Featuring Stainless Steel Hammer Case and Throttle Components for use in corrosive environm...

Page 3: ...ble standards and regulations local state country federal etc Operate and maintain this tool as recommended in this manual to prevent an unnecessary increase in noise vibration dust and fume hazards W...

Page 4: ...r anyone else Always turn off the air supply Bleed the air pressure and disconnect the air supply hose when not in use before performing any maintenance on this tool or any accessory Keep clear of whi...

Page 5: ...f buried hidden or other hazards in your work environment Do not contact damage cords conduits pipes or hoses that may contain electrical wires explosive gases or harmful liquids Projectile Hazards Al...

Page 6: ...ands However ensure that the gloves do not restrict your ability to release the trigger or throttle mechanism To avoid accidental starting ensure the tool is in the off position before applying air pr...

Page 7: ...ld be correctly used and maintained in accordance with the manufacturer s instructions Prevent exposure and inhalation of harmful dust and particles created by power tool use Some dust created by powe...

Page 8: ...substantial increase in vibration Do not touch sockets or accessories during impacting as this increases the risk of cuts burns or vibration injuries Repetitive Motion Hazards Repetitive motions or u...

Page 9: ...area Do not remove any labels Replace any damaged label NOTICE Refer to Product Information Manual for Model Specific Safety Information Wear Respiratory Protection Wear Eye Protection Wear Hearing P...

Page 10: ...of grease into the grease fitting 750SS 15 using a low pressure grease gun after every 40 hours of run time 6 Apply 6 8 drops of Marvel Air Tool Oil into the inlet prior to and after each use see fig...

Page 11: ...twin hammer design for increased durability Constructed with non corrosive materials for prolonged field life 100 Made in the USA Anvil 3 4 Sq Dual Retainer Max Torque Forward 1800 ft lbs Max Torque R...

Page 12: ...ight 13 5 lbs Air Inlet Thread 3 8 Rec d Hose Size 1 2 Avg Air Consumption 58 cfm Model MP 751SS 1 Impact Wrench Offers one of the industry s highest power to weight ratios Featuring a stainless steel...

Page 13: ...ad 3 8 Rec d Hose Size 1 2 Avg Air Consumption 58 cfm Offers one of the industry s highest power to weight ratios Featuring a stainless steel hammer case and a forged hammer frame for increased durabi...

Page 14: ...End Plate 750SS 20 Rear Rotor Bearing 750SS Backcap 750SS 23 Rotor Vane 7 750SS 38 3 4 Square Drive Dual Retainer Anvil for 750SS only 754SS 38B Socket Retaining Ball 754SS 38C Plunger Retaining P 754...

Page 15: ...SS 28 Reverse Valve O Ring 05012015Rev9 PFT MF 751SS 38 1 Square Drive Dual Retainer Anvil for 751SS only 750SS 17 Reverse Lever Snap Ring 750SS 18 Reverse Lever Spring 754SS 38 4 Spline Drive Anvil f...

Page 16: ...16 1 In preparation of disassembly carefully clamp the anvil in a vise using copper jaws to protect the integrity of the anvil Disassembly of the Impact Mechanism Figure 16 2 Turn the Reverse Lever to...

Page 17: ...and lift the Back Cap from the rear of the Motor Housing 2 Remove the Back Cap Gasket 750SS 13 and discard it 3 Use a hook to gently pull the Reverse Valve 750SS 28 from the Reverse Valve Bushing whil...

Page 18: ...18 2 4 Place the entire Motor Assembly on a clean rag with the spline of the Rotor 750SS 22 facing up Remove the Front End Plate 750SS 26 and Cylinder 750SS 25 Remove the Vanes 750SS 23 and Rear End...

Page 19: ...ousing and set aside 3 To remove the Throttle Valve Seat 750SS 02 slide a flat hook under the seat and firmly pull up see figure 19 2 4 Using internal snap ring pliers collapse and remove the Retainin...

Page 20: ...the outer race in your opposite hand If there is any roughness noticed replace the bearing Work a fair amount of grease back into the bearing whether reusing the old bearing or replacing it with a new...

Page 21: ...is properly lubricated 5 Install the Inlet Bushing into the Motor Housing by screwing it in until snug Tighten to 55 ft lbs of torque Assembly of the Motor 1 Pack both bearings with a fair amount of...

Page 22: ...top center or the 12 o clock position Keep the Motor straight with the Motor Housing A small amount of heat applied to the Motor housing may be needed for proper assembly Figure 22 2 Install the Loca...

Page 23: ...he exact same orientation they were before disassembly see figure 23 1 3 Apply a generous coat of grease to the lobe end of the anvil Slide the anvil into the Hammer Frame and through the Hammers Gent...

Page 24: ...the Hammer Frame Washer in place with a dollop of grease carefully set the Motor Housing Assembly onto the Impact Mechanism making sure that the Rotor and Hammer Frame align correctly 8 Install the fo...

Page 25: ...he Motor Assembly Discard the Vanes and replace ALL SEVEN Vanes with new ones Motor will not run Motor is assembled incorrectly Remove Motor Assembly Inspect the parts to be sure they are installed co...

Page 26: ...due to accidents fire theft or vandalism damage due to improper connection or modification of equipment product s which have been opened or tampered with for any reason or which have been damaged due...

Page 27: ...27 Notes...

Page 28: ...Industrial Air Tools 6850 Middlebelt Rd P O Box 906 Romulus MI 48174 7406 2017 Michigan Pneumatic Tool Inc 04112017Rev5 CEH MF...

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