2
45735677_ed2
Product Safety Information
WARNING
Failure to observe the following warnings, and to avoid these potentially hazardous situations, could result in death or serious
injury.
Read and understand this and all other supplied manuals before installing, operating, repairing, maintaining, changing accessories
on, or working near this product.
Always wear eye protection when operating or performing maintenance on this tool. The grade of protection required should be
assessed for each use and may include impact-resistant glasses with side shields, goggles, or a full face shield over those glasses.
Always turn off the air supply, bleed the air pressure and disconnect the air supply hose when not in use, before installing, removing
or adjusting any accessory on this tool, or before performing any maintenance on this tool or any accessory.
Do not use this tool if the actual free speed exceeds the rated rpm. Check the free speed of this tool before mounting any
accessories, after all tool repairs, before each job and after every 8 hours of use. Check speed with a calibrated tachometer, without
the abrasive product installed.
Note:
When reading the instructions, refer to exploded diagrams in Parts Information Manuals when applicable (see under Related Documentation
for form numbers).
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•
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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 ARO 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 (21) from
Housing.
Remove Retaining Ring (18).
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
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).
Throttle Disassembly
Remove Vacuum Adapter (15) (if applicable) by pressing in on
tabs and pulling Vacuum Adapter out.
Remove Inlet Adapter (13), releasing Spring (12) and 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).
4.
5.
6.
1.
2.
3.
4.
1.
2.
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.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Throttle Assembly
Coat Valve Stem (6) with ARO 29665 spindle oil and assemble into
Housing with hole in Valve Stem in line with Housing to accept
Valve (11).
Assemble Seat (10) into Housing with rounded corners into
housing first.
Coat Valve (11) with ARO 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. To
assemble Vacuum Adapter, push into Housing until tabs on
Vacuum Adapter snap into slots in Housing. To assemble Plug,
push into Housing until it is flush with port opening.
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).
1.
2.
3.
4.
5.
6.
7.
1.
2.
3.
4.
Related Documentation
For additional information refer to:
Product Safety Information Manual 04580387.
Product Information Manual 45735669.
Parts Information Manual 04578407.
Manuals can be downloaded from ingersollrandproducts.com
Summary of Contents for RS2 B Series
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