Dynabrade 52657, Safety, Operation And Maintenance

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This service chart is published as a guide to expectant life of component parts. The replacement levels are based on average tool
usage over one year. Dynabrade Inc. considers one year usage to be 1,000 hours.
Parts Common to all Models:
Preventative Maintenance Schedule
For Model All 7" Right Angle Sanders
Index Part Description Number High Wear Medium Wear Low Wear Non-Wear
# Number Required 100% 70% 30% 10%
1 25265 Retainer 1 X
2 53609 Felt Seal 1 X
3 25271 Spindle 1 X
4 01036 Bearing 1 X
5 98288 Shim 1 X
6 98287 Shim 1 X
7
See Note
Bevel Gear Set 1 X
8 25274 Spacer 1 X
9 25264 Wick 1 X
10 02057 Bearing 1 X
11 98243 Wave Spring 1 X
12 25273 Plunger Assembly 1 X
13 98285 Spring 1 X
14
See Note
Housing 1 X
15 25283 Silencer 1 T
16 25217 Muffler Assembly 1 X
17 98282 O-Ring 1 X
18 98281 O-Ring 1 X
19 25282 Silencer 1 T
20 25278 Muffler Cover 1 X
21 25281 Muffler Stem Assembly 1 X
22 53134
Vibration Dampening Handle
1 X
23 01007 Bearing 1 T
24 01294 Shim 1 T
25 01293 Shim 1 T
26 98242 O-Ring 1 T
27 25236 Front Bearing Plate 1 X
28 01010 Spacer 1 X
29 25233 Rotor 1 X
30 25234 Vane (4/pkg.) 1 T
31 25235 Cylinder 1 X
32 96411 Pin 1 X
33 25237 Rear Bearing Plate 1 X
34 01206 Bearing 1 T
35 98279 Pin 2 X
36 25290 Governor Cage 1 X
37 25291 Governor Weight 2 X
38 25293 Governor Valve 1 X
39
See Note
Governor Spring 1 X
40 25298 Shim 1 X
41 25299 Shim 1 X
42 25292 Governor Spindle 1 X
43 25295 Pin 1 X
44 66435 O-Ring 1 T
45 25256 Governor Housing 1 X
46 25257 Cup Nut 1 X
47 12132 Pin 1 T
48 01462 Safety-Lock Lever 1 X
49 25247 Valve Stem Assembly 1 T
50 25245 Throttle Handle 1 X
51 51945 Valve Seat 1 X
52 25249 Tip Valve 1 T
53 25250 Spring 1 T
54 96442 O-Ring 1 T
55 51940 Spacer 1 X
56 25213 Inlet Bushing 1 X
57 25253 Insulating Cover 1 X
96100 – Motor Tune-Up Kit
LEGEND
T Included in Tune-Up Kit
X Type of wear, no other
comments apply.
L Easily lost. Care during
assembly/disassembly.
D Easily damaged during
assembly/disassembly.
R Replace each time tool is
disassembled.
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Note: Please refer to page 4 for specific part number and description.