Ingersoll-Rand 7870-F-( ), 7871-F-( ), 7872-F, 7873-F manual Trouble Shooting, Dimensional Data

Page 12

TROUBLE SHOOTING

LISTED BELOW ARE SOME OF THE MOST COMMON CAUSES FOR THE GRINDER TO MALFUNCTION. MALFUNCTIONS BEYOND THE SCOPE OF THIS MANUAL SHOULD BE BROUGHT TO THE ATTENTION OF YOUR ARO REPRESENTATIVE OR RETURN THETOOL TO THE FACTORY FOR REPAIR.

CONDlTlON

 

POSSIBLE CAUSE

LOW SPEED AND

1.

INADEQUATE AIR SUPPLY.

POWER OR GRIND-

 

 

ER WILL NOT RUN.

2.

AIR REGULATOR (38775) IMPROPER-

 

 

 

LY ADJUSTED.

 

3.

AIR INLET OR EXHAUST SCREEN

 

 

PLUGGED.

CORRECTlVE ACTION

1.CHECK AIR SUPPLY FOR CORRECT REGULATOR ADJUST- MENT (90 P.S.I.G. MAX. WHEN TOOL IS OPERATlNG).

2.CHECK REGULATOR ADJUSTMENT TO BE SURE OF MAXIMUM AIR FLOW.

3.INSPECT, WASH CLEAN.

 

4.

OBSTRUCTION IN THROTTLE VALVE

 

 

OR VALVE NOT OPENING.

 

5.

MOTOR NOT BEING PROPERLY LU-

 

 

BRICATED.

 

8.

ROTOR BLADE IS MISSING, INCOR-

 

 

RECTLY INSTALLED, BADLY WORN

 

 

OR BEARING FAILURE.

THROTTLE VALVE

1.

DAMAGED VALVE PIN OR “0” RING.

HARD TO OPERATE.

 

 

TOOL WILL NOT

1.

DAMAGED VALVE COMPONENTS.

4.D&ASSEMBLE THROTTLE, CLEAN, INSPECT FOR OBSTRUC- TIONS OR DAMAGED PARTS.

5.APPLY 2 OR 4 DROPS OF SPINDLE OIL IN AIR INLET. RUN TOOL TO ALLOW OIL TO ENTER MOTOR - BE CERTAIN OILER IS FULL OF OIL

8.DISASSEMBLE MOTOR, CLEAN AND INSPECT FOR PROPER INSTALLATION, REPLACE BLADES AND/OR BEARINGS IF NEC- ESSARY.

1.DISASSEMBLE VALVE COMPONENTS, INSPECT, REPLACE IF NECESSARY.

1. DISASSEMBLE VALVE COMPONENTS, INSPECT. REPLACE

SHUT OFF.

I

I

PARTS IF NECESSARY.

DIMENSIONAL DATA

AIR

L 1-7/8”(48 mm)1/4” N.P.T.F. AIR INLET

1/4” N.P.T.F. AIR INLET

PN 49999-064

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Contents Series Short Grinders At the air inlet of the toolCedures Failureto Observethe Followingwarningscould Resultin Injury Operate at 90 p.s.i.g .2 bar/620 kPa maximum air pressureRoutine Lubrication Requirements AIR Supply RequirementsRecommended Lubricants Safety Guide for Portable Grinder USE Model IdentificationOperation DON’TMandrel Overhang Dimension Grinding Wheel Mounting InstructionsMounting Instructions for Mounted Wheels Mounting Instructions for Type 1 Grinding WheelsDisassembly and Assembly of Tools Motor SectionHead Section Typical Cross Section of Tool Disassembly AssemblyMotor Section Head when assembling Head SectionRemove nut 36776 and valve components From headDisassemblyassembly Accessories 41753- 3-PIECE Collet AssemblyErickson 3-PIECE Collet Assembly LOCK-OFF Lever AssemblyTrouble Shooting Dimensional Data

7873-F, 7872-F, 7870-F-( ), 7871-F-( ) specifications

Ingersoll-Rand is recognized for its innovative and reliable products in the field of industrial equipment, particularly in the area of rotary compressors and pneumatic tools. Among their notable offerings are the 7871-F, 7870-F, 7872-F, and 7873-F impact wrenches, which are designed to meet the rigorous demands of various professionals.

The Ingersoll-Rand 7871-F-( ), 7870-F-( ), 7872-F, and 7873-F series are characterized by their lightweight design, combined with robust construction that ensures durability. This series of impact wrenches is specifically engineered for high performance and offers an excellent balance of torque and speed, making them suitable for a wide range of applications in automotive, construction, and industrial settings.

One of the main features of these wrenches is their powerful motor, which provides a high torque output, essential for demanding tasks such as lug nut removal and heavy-duty fastening. The tools are equipped with advanced impact mechanism technology, which enhances their efficiency and allows for an optimal power-to-weight ratio. Additionally, the user-friendly controls and ergonomically designed grips ensure maximum comfort during prolonged use.

The 7870-F and 7871-F-( ) models, in particular, boast an adjustable power regulator that allows users to select the optimal torque for different applications. This level of customization is crucial in allowing technicians to work with precision, thereby reducing the risk of damage to fasteners or workpieces. The 7872-F and 7873-F models, on the other hand, focus on features like a higher free speed and extended service intervals, making them ideal for professionals who need reliable tools without frequent maintenance.

All models in this series also showcase Ingersoll-Rand's commitment to technological advancement, incorporating features such as anti-vibration technology that minimizes user fatigue and contributes to better handling. Furthermore, their motors are designed to be energy-efficient, which aligns with modern environmental standards, making them an eco-friendly choice in the industry.

In summary, the Ingersoll-Rand 7871-F-( ), 7870-F-( ), 7872-F, and 7873-F impact wrenches epitomize reliability, performance, and innovation. With powerful motors, user-centric designs, and advanced features, these tools are not only built to last but also to enhance the efficiency of every job they’re used for. Whether for automotive repair or heavy machinery assembly, these impact wrenches stand out as top choices in the competitive market of pneumatic tools.
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