Motor Assembly/Disassembly Instructions – “Model T” Dynabug
Important: Manufacturers warranty is void if tool is disassembled before warranty expires.
A complete Repair Kit, part number
96169
, is available which includes special tools for correct disassembly/assembly of tool.
To Disassemble
1.
Disconnect tool from power source.
2.
Unhook
57980
Spring Clips and remove sanding pad (if necessary).
3.
Unscrew
95405
Button Head Screws (4).
4.
Remove
57980
Spring Clips (if equipped) and lift
57982
Clip Retainer up about 1/2", to expose
57987
or
57997
Base Plate Assembly.
5.
Remove
57988
Hose from
57987
or
57997
Base Plate Assembly.
6.
Disassemble housing assembly from base plate assembly, by pulling apart.
7.
Invert assembly and insert adjustable pin spanner wrench or
50971
Lock Ring Wrench to
57979
Motor Shaft, and remove
(left-hand threads).
8.
Remove
58092
Spacer from motor shaft.
Note:
Spacer orientation on motor shaft.
9.
Remove
57981
Turbine Wheel Assembly.
Note:
Turbine orientation of wheel assembly on motor shaft.
To Assemble:
Important:
Be certain parts are clean and in good repair before assembling.
1.
Slide
57983
Base Plate Door onto
57979
Motor Shaft.
2.
Replace
57981
Turbine Wheel Assembly on motor shaft using the same orientation as when it was disassembled.
3.
Replace
58092
Spacer on motor shaft using the same orientation as when motor was disassembled.
4.
Install
97121
O-Ring onto base plate assembly.
5.
Apply a slight amount of #271 Loctite
®
(or equivalent) to threads of
57979
Motor Shaft and install onto base plate assembly, torque 15
N•m/133 in. - lbs.
6.
Install
57988
Inlet Hose assembly into housing. Apply some grease to
12156
O-Ring and install.
Note:
Speed regulator should be installed at this time. Slide other end of tube over barb fitting in base plate.
7.
Install housing assembly onto base plate assembly.
8.
Install
57980
Spring Clips onto base plate assembly (if necessary).
9.
Slide
57982
Clip Retainer down onto
57987
or
57997
Base Plate Assembly and install
95405
Button Head Screws (4), torque 3.4
N•m/20 in. - lbs.
Tool Assembly Complete. Please allow 30 minutes for adhesives to cure before operating tool.
Valve and Speed Regulator Assemblies:
1.
Secure housing in vice using
57092
Collar or padded jaws.
2.
Remove inlet bushing,
01468
Spring,
01472
Tip Valve and
01464
Seal from housing.
3.
Remove
95697
Snap Ring. Push the speed regulator and valve stem out of the housing. Remove the
01025
O-Rings (2).
4.
Place new
01025
O-Rings (2) on the speed regulator and place in housing with valve stem. Install new
95697
Snap Ring.
5.
Place new
01464
Seal in housing, Using tweezers or needle nose pliers, place the tip valve into housing so that the pin goes through the
hole in the valve stem. Place new
01468
Spring into housing so small end is towards tip valve.
6.
Spread 1 drop of #567 Loctite
®
(or equivalent) around the threads of the inlet bushing and tighten into housing to 23 N•m/200 in. - lbs.
Note:
This tool is an oil-free Dynabrade Tool. Therefore no air lube should be placed into the tool. Operate the machine for approximately 30
seconds before application to workpiece to determine if machine is working properly and safely.
Loctite
®
is a registered trademark of the Loctite Corp.
3
Model
Motor
Motor
Sound
Air Flow Rate
Air Pressure
Air Inlet
Weight
Length
Height
Number
HP (W)
RPM
Level
CFM/SCFM (LPM)
PSIG (Bars)
Thread
Pound (kg)
Inch (mm)
Inch (mm)
57920
N/A
20,000
83 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.45)
5 (127)
3 (76)
57922
N/A
20,000
83 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.45)
5 (127)
3 (76)
57923
N/A
20,000
72 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.5)
5 (127
3 (76)
57924
N/A
20,000
72 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.5)
5 (127
3 (76)
57925
N/A
20,000
83 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.45)
5 (127)
3 (76)
57926
N/A
20,000
72 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.5)
5 (127)
3 (76)
57927
N/A
20,000
72 dB(A)
1/9 (255)
90 (6.2)
1/4" NPT
1 (.5)
5 (127)
3 (76)
Additional Specifications: Hose I.D. Size 1/4" (8 mm)
Machine Specifications
