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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 or 50% of a man year. Parts included in
motor tune-up kit are identified by High Wear and Medium Wear items.
Parts Common to all Models:
Preventative Maintenance Schedule
For All 1Hp Cut-Off Tools
LEGEND
X
Type of wear, no other
comments apply.
L
Easily lost. Care during
assembly/disassembly.
D
Easily damaged during
assembly/disassembly.
R1 Replace each time tool is
disassembled.
R2 Replace each second
time tool is disassembled.
Note: Please refer to page 4 of tool manual for specific part number.
Index Part
Description
Number High Wear Medium Wear Low Wear Non-Wear
#
Number
Required
100%
70%
30%
10%
1
50269
Flange
2
X
2
53654
Guard 1
X
3
51961
Housing Cover
1
X
4
96498
Wave Spring
1
X
5
95438
O-Ring
1
L
6
53620
Motor Adapter
1
X
7
51986
Rotor Nut
1
X
8
54520
Bearing
1
X
9
51951
Shim Pack
1
L
10
51922
Front Bearing Plate
1
X
11
96441
Pin (2)
2
X
12
51927
Rotor Spacer
1
X
13
51985
Rotor 1
X
14
51926
Blade (4/pkg.)
4
X
15
51925
Cylinder
1
X
16
51923
Rear Bearing Plate
1
X
17
02057
Bearing
1
X
18
96445
Pin (2)
2
X
19
51924
Gasket
1
X
20
Governor Assembly
51931
15,000 RPM
1
X
51932
18,000 RPM
1
X
51933
20,000 RPM
1
X
21
96444
Pin
1
L
22
51949
Safety Lever Assembly
1
X
23
51946
Valve Stem Assembly
1
X
(Incl. 96443 O-Ring)
24
See Note
Housing
1
X
25
51945
Valve Seat
1
X
26
51942
Baffle
1
X
27
51941
Spring
1
X
28
51944
Tip Valve
1
X
29
51943
Spring
1
X
30
96442
O-Ring
1
L
31
51940
Spacer
1
X
32
51939
Silencer Plate
1
X
33
51937
Inlet Bushing
1
X
[Incl.(2) 51938 Screens]
7
96532 – 1 Hp. Motor Tune-Up Kit
•
Tune-Up Kit includes high wear
and medium wear motor parts.