Ingersoll Rand Impact Driver 2131 User Manual

45481785  
Edition 1  
March 2007  
Air Impact Wrench  
2131 Series  
Maintenance Information  
Save These Instructions  
 
1. Secure the Inlet Bushing in a vise. Press in both tabs of the Inlet  
Retainer Clip (27) and pull upward on the Housing (19). This  
will allow the Inlet Bushing to come free from the Handle of the  
Housing. Refer to Dwg. TPD1326.  
2. Pull the Trigger (28) from the front of the Housing and remove  
the Trigger O-ring (2A).  
NOTICE  
To prevent damage to the Cylinder, do not tap or strike Cylinder on  
a hard or metallic surface when removing the Rotor Bearings (3).  
To remove the Front Rotor Bearing, hold the Front End Plate with  
Front Rotor Bearing down and tap the Front End Plate on a flat,  
nonmetallic surface such as a work bench. This will loosen the Front  
Rotor Bearing so that it will drop out of the Front End Plate. Refer to  
Dwg. TPD1323.  
SLOT FOR TAB  
(BOTH SIDES)  
FRONT END PLATE  
TAB ON INLET  
RETAINER CLIP  
(BOTH SIDES)  
FRONT ROTOR BEARING  
BENCH WITH NONMETALLIC SURFACE  
(Dwg. TPD1323)  
(Dwg. TPD1326)  
4. Remove the Rear Rotor Bearing Retainer (6) from the rear of  
the Rotor (5). The Rotor can now be removed from the Cylinder.  
Remove the Vanes (4) from the Rotor if they need to be replaced.  
3. With the Inlet Bushing still in the vise, remove the Tilt Valve Seat  
Retainer (1G) and Tilt Valve Seat Support (1F). Use a hooked tool  
with no sharp edges to remove the Tilt Valve Seat (1E) from the  
Inlet Bushing. Refer to Dwg. TPD1327.  
CYLINDER  
HOOKED TOOL  
REAR ROTOR BEARING  
TILT VALVE STEM  
BENCH WITH NONMETALLIC SURFACE  
(Dwg. TPD1324)  
5. To remove the Rear Rotor Bearing, hold the Cylinder with the Rear  
Rotor Bearing down and tap the Cylinder on a flat, nonmetallic  
surface such as a work bench. This will loosen the Rear Rotor  
Bearing so that it will drop out of the Cylinder. Refer to Dwg.  
TPD1324.  
6. Working from the rear of the Housing, push out the Motor Gasket (7).  
(Dwg. TPD1327)  
NOTICE  
4. Remove the Tilt Valve (1D) and Tilt Valve Spring (1C) if damaged.  
5. Remove the Inlet Bushing Seal (1B) and Inlet Retainer Clip (27) if  
damaged. Remove Washer (1A).  
When removing the Motor Gasket, do not use a screwdriver or  
any other sharp object which could damage the Gasket and/or  
Housing.  
NOTICE  
Disassembly of the Throttle Mechanism  
Do not remove the Inlet Bushing Screen (20A) from the Inlet  
Bushing unless it is damaged. Clean the Inlet Bushing Screen by  
using a suitable cleaning solution in a well ventilated area.  
NOTICE  
For ease of disassembly, we recommend using the Inlet Clip  
Removal Tool (36). See Dwg. TPD1681.  
Disassembly of the Reverse Valve Mechanism  
NOTICE  
The Reverse Valve Assembly cannot be removed without first  
removing the Forward and Reverse Buttons (4A) and (4B).  
Therefore, it is important that the procedure below be followed  
exactly.  
LEFT-HAND BUTTON  
TRIGGER  
1. Notice the notches on either side of the partition. These notches  
indicate the correct location for insertion of a thin-bladed  
screwdriver used for removing the Forward and Reverse Buttons.  
Insert the screwdriver between the partition and the Button  
which is fully extended. Gently pry against the Button to  
disengage the detent so that the Button can be removed. After  
the Button is removed, reach inside the Housing and rotate the  
Reverse Valve to extend the remaining Button. Repeat the above  
procedure for the remaining Button. Refer to Dwg. TPD1328.  
INLET BUSHING  
ASSEMBLY  
INLET CLIP  
REMOVAL TOOL  
(Dwg. TPD1681)  
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REMOVAL OF  
FORWARD/  
REVERSE  
BUTTONS  
REVERSE  
VALVE  
(Dwg. TPD1328)  
2. Insert thumb into the front of the Housing and push down on the  
Reverse Valve so that it can be removed through the bottom of  
the handle. Refer to Dwg. TPD1329.  
(Dwg. TPD1329)  
NOTICE  
Do not try to remove the Reverse Valve by pushing upward. It  
can only be removed by pushing it downward and out of the  
bottom of the handle. If the Reverse Valve does not come free,  
tap the bottom of the handle lightly with a rubber hammer until  
it drops out.  
3. Remove the Top Reverse Valve O-ring (3A) and the Bottom  
Reverse Valve O-ring (3B) from the Reverse Valve.  
Assembly  
General Instructions  
1. Whenever grasping a tool or part in a vise, always use leather-  
covered vise jaws to protect the surface of the part and help  
prevent distortion. This is particularly true of threaded members  
and housings.  
NOTICE  
Always use leather-covered vise jaws when clamping the handle  
in a vise. Leather will conform to the shape of the handle and  
allow the tool to be held securely. To prevent damage to the  
exhaust diffuser, never clamp only the bottom of the handle.  
EARS  
2. Always clean every part and wipe every part with a thin film of oil  
before installation.  
(Dwg. TPD1330)  
NOTICE  
Use a wooden dowel to push the Reverse Valve up through  
the handle until the top of the Reverse Valve is flush with or  
slightly above the bottom of the motor bore in the Housing  
(19). Refer to Dwg. TPD1331.  
Do not remove grease from the impact mechanism or Hammer  
Case (15). If the impact mechanism has not been disassembled,  
inject Ingersoll Rand No. 115-1LB Grease through the Hammer  
Case Grease Fitting (17).  
When disassembling and assembling the impact mechanism,  
remove all grease from the impact mechanism and Hammer Case  
and lubricate the impact mechanism and Hammer Case Bushing  
(16) with Ingersoll Rand No. 105-1LB Grease or Ingersoll Rand  
No. 105-8LB Grease.  
3. Apply a film of o-ring lubricant to all O-rings before final  
assembly.  
DOWEL  
Assembly of the Reverse Valve Mechanism  
1. Install the Bottom Reverse Valve O-ring (3B) (color-coded blue)  
and the Top Reverse Valve bring (3A) on the Reverse Valve (30).  
2. Insert the Reverse Valve in the bottom of the handle making sure  
that two ears on the Reverse Valve are facing downward. Refer to  
Dwg. TPD1330.  
(Dwg. TPD1331)  
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NOTICE  
If the Reverse Valve is pushed up too far and becomes wedged,  
it will have to be pushed back down through the handle and  
re-inserted from the bottom of the handle. The Reverse Valve  
cannot be removed by pushing it up through the handle and  
into the motor bore. If the Reverse Valve must be removed and  
re-installed, make sure that the Top and Bottom Reverse Valve  
O-rings have not been rolled off and are in their proper positions  
on the Reverse Valve.  
REAR OF  
HOUSING  
REVERSE  
VALVE  
3. When the Reverse Valve has been installed, rotate the Reverse  
Valve so that the tab on the Reverse Valve is at the rear of the  
Housing. Refer to Dwg. TPD1332.  
REVERSE  
BUTTON  
TAB  
FRONT OF  
HOUSING  
(Dwg. TPD1334)  
NOTICE  
REVERSE  
VALVE  
If the Forward/Reverse Buttons will not install easily, move the  
Reverse Valve slightly higher in the handle to provide better  
alignment with the Buttons.  
7. After the Forward/Reverse Buttons have been installed, remove  
the Trigger before proceeding with installation of the throttle  
mechanism.  
APPROX. 1/32”  
(Dwg. TPD1332)  
Assembly of Throttle Mechanism  
1. Using an Inlet Bushing Screen Installation Tool, install the Inlet  
Bushing Screen (20A), screened end first, in the bottom (hex end)  
of the Inlet Bushing (20). Insert the rounded end of the tool in the  
cone formed by the screen and tap the end of the tool to secure  
the rim of the screen in the Bushing. Refer to Dwg. TPD1473.  
NOTICE  
If the orientation of the Reverse Valve is not correct (tab facing  
the rear of the Housing), the Trigger (28) and the Forward and  
Reverse Buttons (4A) and (4B) cannot be installed.  
4. Install the Trigger O-ring (2A) on the Trigger. Insert the Trigger  
Assembly in the front of the Housing.  
Inlet Bushing Screen Installation Tool  
5. Rotate the Reverse Valve in either direction until an ear comes up  
against the Trigger.  
6. Look through the Housing from the rear. If the tab on the Reverse  
Valve has been rotated to the left, install the right Button in the  
Housing. When one Button has been installed, push the Button  
in. This will rotate theReverse Valve so that the other Button can  
be installed. Refer to Dwg. TPD1333.  
0
(Dwg. TPD1473)  
2. Install the Washer (1A), Inlet Retainer Clip (27), Inlet Bushing Seal  
(1B), Tilt Valve Spring (1C), Tilt Valve (1D) Tilt Valve Seat (1E) and  
Tilt Valve Seat Support (1F).  
REAR OF  
HOUSING  
REVERSE  
VALVE  
WARNING  
The Tilt Valve Seat Retainer (1G) must be properly installed in the  
groove in the Inlet Bushing (20). To check for correct installation  
of the Retainer, insert a pin into one of the holes in the Retainer  
and rotate the Retainer. A correctly installed Retainer will  
rotate freely but with some resistance in the groove of the Inlet  
Bushing. An incorrectly installed Retainer will pop out of the  
Inlet Bushing when the Retainer is rotated.  
TAB  
FORWARD  
BUTTON  
(Dwg. TPD1333)  
If the tab on the reverse Valve has been rotated to the right,  
install the left Button. Refer to Dwg. TPD1334.  
WARNING  
Do not use compressed air to check installation of the Tilt Valve  
Seat Retainer or Inlet Bushing Screen unless the entire Inlet  
Bushing Assembly is installed in the tool with the Hammer Case  
installed and properly secured to the Motor Housing. Failure to  
do so could result in injury.  
Install the Tilt Valve Seat Retainer.  
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Assembly of the Impact Mechanism  
NOTICE  
When re-installing the Inlet Bushing Assembly (20), pull the  
Trigger (28) outward and make sure that the Reverse Button (4B)  
is depressed before snapping the Inlet Bushing Assembly back  
into the Housing.  
3. Install the Inlet Bushing Assembly by pushing it into the hole in  
the Housing until you see and hear the tabs on Inlet Retainer Clip  
snap into place through the slots in Housing handle.  
TOP HAMMER  
HALF-ROUND  
NOTCH ON RIGHT  
NOTICE  
The Reverse Button (left) (4B) must be pushed in before the  
Trigger can be installed. Otherwise, the Trigger will be damaged  
during installation.  
4. Install the Trigger by pushing it into the handle until a click is  
heard indicating that it is properly engaged.  
BOTTOM HAMMER  
HALF-ROUND  
INSTALLATION  
OF MOTOR  
GASKET  
NOTCH ON LEFT  
(Dwg. TPD1535)  
1. Coat the Hammers (14) with a light film of No. Ingersoll Rand  
105-1LB Grease or Ingersoll Rand No. 105-8LB Grease.  
2. Heavily coat the jaws of the Anvil (8) with Ingersoll Rand No.  
105-1LB Grease or Ingersoll Rand No. 105-8LB Grease.  
3. Replace the Hammers in the Hammer Frame (12) exactly as they  
were when you marked them prior to disassembly.  
NOTICE  
If you are installing new Hammers or want to change the location  
of the existing Hammers to utilize both impacting surfaces, slide  
the Hammers in the Hammer Frame so that the half-round notch  
on one Hammer is located on one side of the Frame and the  
half-round notch on the other Hammer is located on the other  
side of the Frame.  
(Dwg. TPD1336)  
Assembly of the Motor  
NOTICE  
When disassembling, assembling or pulling the Motor, we  
recommend replacement of the Motor Gasket (7).  
4. Replace the Hammer Pins (13).  
5. Examine the base of the Anvil (8) and note its contour. While  
looking down through the Hammer Frame, swing the top  
Hammer to its full extreme one way or another until you can  
match the contour of the Anvil. Enter the Anvil into the Hammer  
Frame and through the first Hammer. Swing the bottom Hammer  
in the opposite direction from the top Hammer and maneuver  
the Anvil slightly until it drops into the bottom Hammer. Refer to  
Dwg. TPD1535.  
1. Install the Motor Gasket in the Housing making sure that the  
grooves in the tab of the Motor Gasket fit around ridge in the  
Housing. Refer to Dwg. TPD1336.  
2. Install the Rear Rotor Bearing (3) into the rear of the Cylinder (1).  
3. Install the Rotor in the Cylinder and secure with the Rear Rotor  
Bearing Retainer (6).  
4. Install Vanes (4) in the slots in the Rotor (5).  
5. Install the Front Rotor Bearing (3) into the Front End Plate (2).  
Install the Front End Plate on the Cylinder by pressing on the  
inner race of the front Rotor Bearing until the Bearing is seated on  
the Rotor Shaft.  
6. Install the Power Management Dial Seal (5A) on the Power  
Management Dial (35) and install the Dial in the end of the  
Cylinder.  
Assembly of the Air Wrench  
1. Position the Motor Housing (19) in leather-covered vise jaws with  
the splined shaft of the Rotor in a horizontal position.  
2. Place the assembled impact mechanism down onto the splined  
hub of the Rotor.  
3. Position the Hammer Case Gasket (18) against the face of the  
Motor Housing.  
7. Clean the Silencer (6A) using a suitable cleaning solution in a  
well-ventilated area. Position the Silencer over the top of the  
Cylinder and insert the Motor Assembly into the Housing (19),  
Power Management Dial end first.  
6
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FRONT OF  
HOUSING  
NOTICE  
Be sure that the flat on the bottom of the Hammer Case Gasket is  
installed in the corresponding flat in the Housing. If the Hammer  
Case Gasket is not installed correctly, the Air Wrench will not  
function properly.  
GASKET  
Refer to Dwg. TPD1335-1.  
4. Apply a thin film of Ingersoll Rand No. 105-1LB Grease or  
Ingersoll Rand 105-8LB Grease on inside surface of the Hammer  
Case Bushing (16), and place the Hammer Case (15) down over  
the Anvil and against the Motor Housing.  
FLATS  
(Dwg. TPD1335-1)  
5. Install the Hammer Case Screws (11) and tighten them to 25 in-lb  
(2.8 Nm) torque.  
Troubleshooting Guide  
Trouble  
Probable Cause  
Dry Motor  
Solution  
Daily, inject 3 cc of Ingersoll Rand No. 50 Oil into the inlet and run the tool to  
lubricate the motor.  
Install proper air supply and connection. Refer to Dwg. 04581666 on Page 2 of Air  
Impact Wrench Product Information Manual Form 04584686.  
Inadequate air supply  
Using a clean, suitable, cleaning solution in a well ventilated area, clean the Inlet  
Bushing Screen.  
Dirty Inlet Bushing Screen  
Worn or broken Vanes  
Replace a complete set of Vanes.  
Low power  
Examine Cylinder. Check outside and ends for wear or damage and inside for  
scored or wavy bore. Replace Cylinder if any of these conditions exist. Replace  
End Plates if they are scored.  
Worn or broken Cylinder  
and/or scored End Plates  
Disassemble the Tool and clean in a clean, suitable, cleaning solution in a well  
ventilated area. Assemble the Tool and inject 3 cc of the recommended oil into  
Inlet and run Tool to lubricate internal parts.  
Dirty motor parts  
Replace Reverse Valve. Refer to Assembly of the Reverse Valve Mechanism.  
Refer to “Assembly of the Reverse Valve Mechanism.  
Damaged Reverse Valve  
Disassemble motor and replace worn or broken parts and reassemble. Refer to  
Assembly of the Motor.  
Incorrect assembly of motor  
Motor will not run  
Tool will not impact  
Insufficient lubricant in impact  
mechanism  
Lubricate impact mechanism through Hammer Case Grease Fitting using the  
recommended grease.  
Broken or worn impact  
mechanism parts  
Remove Hammer Case Assembly and examine impact  
mechanism parts. Replace any worn or broken parts.  
Impact mechanism not  
assembled correctly  
Refer to Assembly of the Impact Mechanism.  
Related Documentation  
For additional information refer to:  
Air Impact Wrench Product Safety Information Manual Form 04580916.  
Air Impact Wrench Product Information Manual Form 04584686.  
Air Impact Wrench Parts List Manual Form 04584025.  
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© 2007 Ingersoll Rand Company  
 

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