Ingersoll Rand Impact Driver 2131 User Manual

45481785

Edition 1

March 2007

Air Impact Wrench

2131 Series

Maintenance Information

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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 the’Reverse Valve so that the other Button can

be installed. Refer to Dwg. TPD1333.

(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.

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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.