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16575011_ed2

WARNING

Always wear eye protection when operating or performing maintenance on this tool.

Always turn off the air supply and disconnect the air supply hose before installing, removing or adjusting any accessory on this tool or 

before performing any maintenance on this tool.
Note:

 

When reading the instructions, refer to exploded diagrams in parts Information Manuals when applicable (see under Related Documentation 

for form numbers).

Disassembly
General Instructions

Never apply excessive pressure by a holding device which may 

cause distortion of a part.

Apply pressure evenly to parts, which have a press fit.

Apply even pressure to the bearing race that will be press fitted 

to the mating part.

Use correct tools and fixtures when servicing this tool.

Don’t damage “O” Rings when servicing this tool.

Use only genuine 

Ingersoll Rand

 replacement parts for this tool.

When ordering, specify part number, description, tool model 

number and serial number.

Disassembly of Motor

Remove Sanding Pad (34).

Remove Lock Ring (27) and pull Motor and Seal (22) from Housing.

Remove Retaining Ring (18).

Using special brass blocks to fit around outside diameter 

of Cylinder, clamp around Cylinder and press Shaft of 

Counterbalance through Bearing (19) and End Plate (20).

Remove Blades (24), Rotor (23), and Key (28).

Remove End Plate (25) and Bearing (19).

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2.

3.

4.

5.

6.

7.

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2.

3.

4.

5.

6.

Vacuum Adapter Removal

25 mm size:

 While pressing in on the tabs on the side, pull 

vacuum adapter out.w

To remove the 28 and 32 mm size: 

Remove muffler and pull 

vacuum adapter out.

Throttle Disassembly

Remove Vacuum Adapter (15).

Remove Inlet Adapter (13), releasing Spring (12) & Valve (11). 

Note: Do not remove seat (10) unless damage is evident.

Remove Muffler (14).

To remove Valve Stem (6), remove Roll Pin (8) and Lever (7).

Regulator Disassembly

Remove Lever (7) by removing Roll Pin (8).

Remove Snap Ring (5) from Regulator (3).

Remove regulator assembly (3) - includes 2 “O” Rings (4).

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2.

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4.

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3.

Assembly
Assembly of Motor

Grease and assemble “O” Ring (26) to Lock Ring (27).

Assemble Lock Ring over Counterbalance (29).

Assemble Bearing (19) into End Plate (25), pressing on outer race 

of Bearing.

Assemble End Plate (25) onto Shaft of Counterbalance, pressing 

on inner race of Bearing.

Install Key (28) in key slot.

Assemble Rotor (23) to Counterbalance, aligning key-way to  

Key (28).

Assemble Five rotor blades (24) to Rotor Slots.

Assemble Cylinder (21) over Rotor, aligning Roll Pin in Cylinder 

with slot in End Plate.

Assemble Bearing (19) into End Plate (20), pressing on outer race 

of Bearing.

Assemble End Plate (20), with Bearing (19), to Counterbalance, 

pressing on inner race of Bearing. 

Note: Align slot in End Plate with Roll Pin in Cylinder.

Install Retaining Ring (18) to groove in Counterbalance, with bow 

in ring positioned as shown in parts illustration page.

Assemble Seal (22) to grooves in Cylinder.

Assemble Motor to Housing, aligning Seal (22) with air inlet.

Tighten Lock Ring (27), securing Motor Assembly.

Assemble Sanding Pad (34) and tighten securely.

Throttle Assembly

Coat Valve Stem (6) with 

Ingersoll Rand

 29665 spindle oil and 

assemble into Housing with hole in Valve Stem in line with 

Housing to accept Valve (11).

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

15.

1.

Assemble Seat (10) into Housing with rounded corners into 

housing first.

Coat Valve (11) with 

Ingersoll Rand

 29665 spindle oil and 

assemble into housing, securing Valve Stem (6).

Assemble Spring (12) into Housing.

Assemble Inlet Adapter (13) to Housing, securing throttle 

components.

Assemble Lever (7) to Housing, securing with Roll Pin (8).

Assemble Vacuum Adapter (15) or Plug (16) to Housing.

Vacuum Adapter installation

25 mm size: 

Push into housing until tabs on Vacuum Adapter 

snap into Housing.

To install 28 and 32 mm size

: Remove muffler. Push adapter into 

housing and align ring on vacuum adapter with exhaust. Push 

muffler through ring on vacuum adapter and screw muffler to 

housing.

Regulator Assembly

Assemble Regulator (3) and 2 “O” Rings (4).

Insert Regulator assembly (3) into Housing (1).

Assemble Snap-Ring (5) into groove on regulator assembly (3).

Install Lever (7) by adding Roll Pin (8).

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3.

4.

5.

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7.

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3.

4.

Related Documentation

For additional information refer to:

Product Safety Information Manual 04580387.

Product Information Manual 04578399.

Parts Information Manual 16573933.
Manuals can be downloaded from www.irtools.com

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