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Model:
52450 – 6,000 RPM
52451 – 7,200 RPM
52454 – 8,500 RPM
!
WARNING
50541 Governor Valve
96059 Governor Pin (2)
Governor Weight (2)
52497 – 6,000 Rpm
52498 – 7,200 Rpm
52498 – 8,500 Rpm
52478 Governor Cage
T
4
52467 Spacer
52472 Bearing Plate
52471 Shim Pak
01825 Bearing
01815 Rotor Nut
T
6
01835 Shim Packet
01823 Washer
52165 Gasket
52164
Exhaust
Cover
52166 Seal
52169 Handle
See reverse side for Accessories and Important Operating, Maintenance and Safety Instructions.
Oil
O
Loctite/Hernon: L
L
L
= Hernon #940
4
Torque: N•m x 8.85 = In. - lbs.
T
T
= 4.5 N•m, T
= 7 N•m, T
2
3
T
= 22.5 N•m, T
6
7
Always operate, inspect and maintain this tool in accordance with the Safety Code for portable air
tools (ANSI B186.1) and any other applicable safety codes and regulations. Please refer to
Dynabrade's Warning/Safety Operating Instructions for more complete safety information.
Governor Spring
01832 – 6,000 Rpm
01829 – 7,200 Rpm
52172 – 8,500 Rpm
52173 Shim Pak
52474
Blade (4/pkg.)
52466 Rotor
95375 O-Ring
94522 Muffler Cap
07136 Handle Grip
L
KEY
Grease
G
= Loctite #271, L
= Loctite #380,
2
3
= 9 N•m, T
= 17 N•m,
4
5
= 45 N•m, T
= 50 N•m, T
= 56 N•m
8
9
50548 Spring Holder
01672 Pin
52475 Cylinder
01673 Pin
50468 Pin
O
T
50511 Screw (2)
2
01791 Washer (2)
52180 Clamp
52495 Nut
L
T
4
52496 Packing
3
Parts Page Reorder No. PD97•35
Effective May, 1997
7" Vertical
Disc Sander
Air Motor and Machine Parts
52476 Bearing Plate
Housing
52442 – Model 52450
52443 – Model 52451
52447 – Model 52454
07168 Valve Stem Assembly
01746 "O" Ring
7
52491 Adj. Bushing
L
2
01036 Bearing
01791 Washer (4)
95720
Screw (4)
T
4
52461 Housing Cap
52477 Gasket
01089 Lever
01697 Inlet Bushing
L
T
2
9
52494 Valve Body
(Inc. 07142 Bushing)
01017 Pin
07145 Spring
07146 Packing
07147 Plug
T
5
T
8
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Summary of Contents for Dynabrade 52450
- Page 1 Always operate, inspect and maintain this tool in accordance with the Safety Code for portable air WARNING tools (ANSI B186.1) and any other applicable safety codes and regulations. Please refer to Dynabrade's Warning/Safety Operating Instructions for more complete safety information. 50541 Governor Valve Governor Spring 52476 Bearing Plate 01832 –...
- Page 2 2. Some silencers on air tools may clog with use. Clean and replace as required. 3. All Dynabrade air motors should be lubricated. Dynabrade recommends one drop of air lube per minute for each 10 SCFM (example : if the tool specification state 40 SCFM, set the drip rate of your filter-lubricator at 4 drops per minute).
- Page 3 7. Check clearance between rotor and bearing plate by using a .001" feeler gauge. Clearance should be at .001" to .0015". Adjust clearance by repeating steps 1-5 with different shims if necessary. 8. Once proper rotor/gap clearance is achieved, install well lubricated 52474 Blades (4) into rotor slots. Dynabrade Air Lube P/N 95842 (or equivalent) is recommended for lubrication before installation in rotor slots.
- Page 4 Important: Motor should now be tested for proper operation at 90 PSI. If motor does not operate properly or operates at a higher RPM than marked on the tool, the tool should be serviced to correct the cause before use. Before operating, place 2-3 drops of Dynabrade Air Lube (P/N 95842) directly into air inlet with throttle lever depressed.
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