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6

• Appropriate controls to reduce 
the risk from noise hazards may 
include actions such as damping 
materials to prevent work pieces 
from “ringing.”

• If the tool has a silencer, always 
ensure it is in place and in good 
working order when the tool is 
being operated.

Operating Hazards

• Operators and maintenance 
personnel must be physically 
able to handle the bulk, weight 
and power of the tool.

• Keep body stance balanced 
and firm. Do not overreach when 
operating this tool. Anticipate 
and be alert for sudden changes 
in motion, reaction torques 
or forces during start up and 
operation. The operator should 
change posture during extended 
tasks, which can help avoid 
discomfort and fatigue.

• Use of the tool can expose 
the operator’s hands to hazards, 
including crushing, impacts, 
cuts, abrasions and heat. Wear 
suitable gloves to protect hands. 
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 
pressure, avoid the throttle when 
carrying, and release the throttle 
with loss of air.

• Do not lubricate tool with 
flammable or volatile liquids 
such as kerosene, diesel or jet 
fuel. Use only recommended 
lubricants.

• Do not carry or drag the tool by 
the hose.

• Tool and/or accessories may 
briefly continue their motion after 
throttle is released. 

• On Reversible tools, note 
the position of the reversing 
mechanism before operating 
the tool so as to be aware of 
the direction of rotation when 
operating the throttle.

Accessory Hazards

• Use only sizes and types of 
accessories and consumables 
that are recommended by 
the tool manufacturer; do not 
use other types or sizes of 
accessories or consumables.

• Periodically check the drive 
end of the tool to make certain 
that the socket retainer functions 
correctly and that socket and 

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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