3M RANDOM ORBITAL SANDERS Service Instructions Download

Page: 1 / 5

34-8700-5191-8

Revision 10/03/07

3M™ Overhaul Service Kit

The part number 20347,

3M™ Overhaul Service Kit, contains all the replacement parts that naturally

wear over time and a straightforward manual to make servicing a 3M™ sander simple. Overhauling the

Random Orbital Sander can be made even easier with the use of the above Service Tools. The Service

Tools also reduce the chance of improper assembly.

SERVICE INSTRUCTIONS FOR

3M™ 12,000 RPM 5 in. (127 mm)

and 6 in. (150 mm)

RANDOM ORBITAL SANDERS

Part Number

Description

Qty

3MA0040

EXTERNAL RETAINING RING

3MA0021

BEARING - 2 SHIELDS

3MB0005

ROTOR

3MA0010

VANE

3MA0041

WOODRUFF KEY

3MA0042

O-RING

3MA0019

BEARING - 2 SHIELDS

3MA0938

DOUBLE ROW ANGULAR CONTACT BEARING - 1 SEAL

3MA0039

INTERNAL RETAINING RING

3MA0062

INTERNAL MUFFLER

3MA0068

MUFFLER INSERT

3MA0007

VALVE

3MA0009

VALVE SEAT

3MA0014

VALVE SPRING

3MA0043

O-RING

3MA0008

VALVE STEM ASSEMBLY

3MA0166

MUFFLER HOUSING

3MA0016

SPACER

3MA1417

INSTRUCTIONS FOR 5 in. AND 6 in. ROS OVERHAUL SERVICE KIT

Summary of Contents for RANDOM ORBITAL SANDERS

Page 1: ...IONS FOR 3M 12 000 RPM 5 in 127 mm and 6 in 150 mm RANDOM ORBITAL SANDERS Part Number Description Qty 3MA0040 EXTERNAL RETAINING RING 1 3MA0021 BEARING 2 SHIELDS 1 3MB0005 ROTOR 1 3MA0010 VANE 5 3MA0041 WOODRUFF KEY 1 3MA0042 O RING 1 3MA0019 BEARING 2 SHIELDS 1 3MA0938 DOUBLE ROW ANGULAR CONTACT BEARING 1 SEAL 1 3MA0039 INTERNAL RETAINING RING 1 3MA0062 INTERNAL MUFFLER 1 3MA0068 MUFFLER INSERT 1...

Page 2: ...e Set Screw in the top of the T 9 12 mm ID Bearing Puller B Make sure the Retaining Ring is removed then press the Bearing Puller into the I D of Bearing until the Bear ing Puller hits the bottom of the Shaft Balancer C Thread the Set Screw down until it hits the bottom of the Shaft Balancer or becomes very tight Grip the shaft end of the Shaft Balancer in a padded vise D Screw the threaded end of...

Page 3: ...anent pipe thread sealant Screw the assembly into the Hous ing Torque to 60 in lbs 6 77 Nm 4 For NV and CV machines follow the steps outlined in Section I below For SGV machines follow the steps in Section III I This section is for CV and NV A Place a clean felt Muffler all the way into the chamber of the Muffler Housing Press the Bronze Muffler onto the Muffler Housing B Screw the Muffler Housing...

Page 4: ...n onto the Motor Shaft Gently press the Front End plate onto the Bearing using the larger end of the T 13 Bearing Press Sleeve until the Front Bearing is seated in the bearing pocket of the Endplate CAUTION Only press just enough to seat the bearing into the pocket Over pressing can damage the bearing 3 Place the Key into the groove on the Shaft Balancer Place the Rotor on the Shaft Balancer makin...

Page 5: ...otor Parts Worn Overhaul Motor Contact authorized Service Center Worn or broken Spindle Bearings Replace the worn or broken Bearings See Shaft Balancer and Spindle Disas sembly and Spindle Bearings Bearing Shield and Shaft Balancer Assembly Air leakage through the Speed Control and or Valve Stem Dirty broken or bent Valve Spring Valve or Valve Seat Disassemble inspect and replace worn or damaged p...

Search results

Summary of Contents for RANDOM ORBITAL SANDERS

Reviews:

Related manuals for RANDOM ORBITAL SANDERS

Brands by name

Popular brands

3M RANDOM ORBITAL SANDERS, Service Instructions

Search results

Summary of Contents for RANDOM ORBITAL SANDERS

Reviews:

Related manuals for RANDOM ORBITAL SANDERS

Brands by name

Popular brands