SECTION
MANUAL
M10
25
OPERATOR’S MANUAL
)
INCLUDING:ĂOPERATION,ĂINSTALLATIONĂ&ĂMAINTENANCE
Released: 08-28-72
Revised: 01-14-00
MODELS: 7980–( )–( )
85,000 R.P.M. TURBINE GRINDER
ARO is not responsible for customer modification of tools for applications on which ARO
was not consulted.
IMPORTANT SAFETY INFORMATION ENCLOSED.
READ THIS MANUAL BEFORE OPERATING TOOL.
IT IS THE RESPONSIBILITY OF THE EMPLOYER TO PLACE THE INFORMATION
IN THIS MANUAL INTO THE HANDS OF THE OPERATOR.
FAILURE TO OBSERVE THE FOLLOWING WARNINGS COULD RESULT IN INJURY.
PLACING TOOL IN SERVICE
USING THE TOOL
•
Always operate, inspect and maintain this tool
in accordance with American National
Standards Institute Safety Code for Portable
Air Tools (ANSI B186.1).
For safety, top performance, and maximum
durability of parts, operate this tool at 90 psig
(6.2 bar/620 kPa) maximum air pressure at the
inlet with 3/16” (5 mm) inside diameter air
supply hose.
Always turn off the air supply and disconnect
the air supply hose before installing, removing
or adjusting any accessory on this tool, or
before performing any maintenance on this
tool.
•
•
•
•
Always wear eye protection when operating or
performing maintenance on this tool.
Always wear hearing protection when
operating this tool.
Keep hands, loose clothing and long hair
away from rotating end of tool.
Anticipate and be alert for sudden changes in
motion during start up and operation of any
power tool.
Keep body stance balanced and firm. Do not
overreach when operating this tool. High
reaction torques can occur at or below the
recommended air pressure.
•
•
•
•
•
Tool accessories may continue to rotate
briefly after throttle is released.
•
•
Do not use damaged, frayed or deteriorated
air hoses and fittings.
Air powered tools can vibrate in use.
Vibration, repetitive motions or uncomfortable
positions may be harmful to your hands and
arms. Stop using any tool if discomfort,
tingling feeling or pain occurs. Seek medical
advice before resuming use.
Use accessories recommended by ARO.
This tool is not designed for working in
explosive atmospheres.
Be sure all hoses and fittings are the correct
size and are tightly secured. See Dwg.
TPD905–1 for a typical piping arrangement.
Always use clean, dry air at 90 (6.2 bar/
620 kPa) psig maximum air pressure. Dust,
corrosive fumes and/or excessive moisture
can ruin the motor of an air tool.
Do not lubricate tools with flammable or
volatile liquids such as kerosene, diesel or jet
fuel.
•
•
•
•
•
•
This tool is not insulated against electric
shock.
Do not remove any labels. Replace any
damaged label.
The use of other than genuine ARO replacement parts may result in safety hazards, decreased tool
performance, and increased maintenance, and may invalidate all warranties.
Repairs should be made only by authorized trained personnel. Consult your nearest ARO Authorized
Servicenter.
For parts and service information, contact your local ARO distributor, or the Customer Service Dept. of the Ingersoll–Rand
Distribution Center, White House, TN at PH: (615) 672–0321, FAX: (615) 672–0801.
ARO Tool Products
Ingersoll–Rand Company
1725 U.S. No. 1 North D P.O. Box 8000 D Southern Pines, NC 28388–8000
E2000 INGERSOLL–RAND COMPANY D PRINTED IN U.S.A.
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M10
25
LUBRICATION
Do not mark any nonmetallic surface on this tool
with customer identification codes. Such actions
could affect tool performance.
MAIN LINES 3 TIMES
AIR TOOL INLET SIZE
TO
AIR
ARO Part #
Description
Where Used
SYSTEM
“O” Rings
36460
4 oz. Stringy
Lubricant
TO
AIR
TOOL
Bearings
33153
5 lb. ‘‘EP” – NLGI
#1 Grease
LUBRICATOR
FILTER
REGULATOR
Always use an air line lubricator with these tools.
BRANCH LINE 2 TIMES
AIR TOOL INLET SIZE
We recommend the following Filter–Lubricator–
Regulator Unit:
DRAIN REGULARLY
COMPRESSOR
(Dwg. TPD905–1)
ARO Model P29231–110
Lack of or an excessive amount of lubrication will
affect the performance and life of this tool. Use only
recommended lubricants.
3
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25
24
23
22
21
20
19
18
34
33
32
29
28
27
26
NOT SHOWN
30131 WRENCH
04662532 WARNING LABEL (NON–EU MODELS)
39853 HOSE ASSEMBLY
48176–1 WARNING LABEL (NON–EU MODELS)
49883 WARNING LABEL (–EU MODELS)
PART NUMBER FOR ORDERING
PART NUMBER FOR ORDERING
1
Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
36906
14 Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 Roll Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45952
Y178–5
45778
45777
45953
36907
32798
36908
36909
36910
36913
36911
36919
2a Throttle and Bushing Assembly . . . . . . . .
2b Head Assembly . . . . . . . . . . . . . . . . . . . . . .
2
Head and Throttle Assembly (includes
items 2a and 2b)
Lever
Assembly
(includes
items
14
thru
17) . . . . .
for non ‘‘–EU” models . . . . . . . . . . . . . . . .
for ‘‘–EU” models . . . . . . . . . . . . . . . . . . .
‘‘O” Ring (2 req’d) . . . . . . . . . . . . . . . . . . . .
Roll Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Head and Throttle Assembly (includes
items 1 thru 4)
for non‘‘–EU” models . . . . . . . . . . . . . . . .
for ‘‘–EU” models . . . . . . . . . . . . . . . . . . .
Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roll Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle Valve Head . . . . . . . . . . . . . . . . . .
‘‘O” Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‘‘O” Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . .
36920–1
49939–1
Y325–15
36918
18 Nozzle Plate . . . . . . . . . . . . . . . . . . . . . . . .
19 Nut . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 Sleeve . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21 Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22 Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23 Ball Bearing . . . . . . . . . . . . . . . . . . . . . . . . .
24 Impeller . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25 Spacer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26 Housing
for non ‘‘–EU” models . . . . . . . . . . . . . . . .
for ‘‘–EU” models . . . . . . . . . . . . . . . . . . . .
27 Ball Bearing . . . . . . . . . . . . . . . . . . . . . . . . .
28 Spindle . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29 Lock Sleeve . . . . . . . . . . . . . . . . . . . . . . . . .
32 Housing Cap . . . . . . . . . . . . . . . . . . . . . . . .
33 Collet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34 Nosepiece . . . . . . . . . . . . . . . . . . . . . . . . . .
3
4
36920
49939
43885
Y178–44
38947
Y325–211
Y325–5
33032
31125
32886
5
6
7
8
9
36901
49901
36913
36902
43881
36912
31812–4
36914
10 Stem Valve . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 Throttle Valve Screw . . . . . . . . . . . . . . . . . .
Head Assembly (includes items 7 thru 13)
33023
38949–1
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2b
4
3
2a
1
MODEL 7980–A–( )
5
8
7
6
MODEL 7980–2
17 16 15
14
9
10
MODEL 7980–2–EU
11
12
13
DISASSEMBLY/ASSEMBLY INSTRUCTIONS
NOTICE
_
_
•
•
Remove impellers (21, 22 and 24), sleeve (20), bearing (23)
and spacer (25) from housing.
Do not remove bearing (27) from spindle unless damage is ev-
ident. To remove, press off of spindle.
Models 7980–2–( ) – Remove valve screw (13) and seal (12),
releasing spring (11), stem valve (10) and ‘‘O” ring (9).
Models 7980–A–( ) – To remove ‘‘O” rings (3), remove nut (1),
releasing throttle and bushing assembly (2a).
•
Never apply excessive pressure by a holding device which
may cause distortion of a part.
Apply pressure evenly to parts which have a press fit.
Apply even pressure to the bearing race that will be press
fitted to the mating part.
Use correct tools and fixtures when servicing this tool.
Don’t damage ‘‘O” rings when servicing this tool.
Use only genuine ARO replacement parts for this tool. When
ordering, specify part number, description, tool model number
and serial number.
•
•
•
•
•
ASSEMBLY
_
_
_
Assemble bearing (27) to spindle (28), pressing on inner race
of bearing.
Assemble spindle into housing theu nose end, pressing on
DISASSEMBLY
_
_
Remove hose assembly (not shown) from the inlet of the tool.
Insert A 1/8” diameter pin thru the hole in the housing (26), lock
sleeve (29) and spindle (28).
Using a wrench on flats of housing cap (32), unthread and re-
move housing cap (32) and lock sleeve (29).
outer race of bearing.
Assemble spacer (25), impeller (24), impeller (22) with bear-
ing (23) and impeller (21) with sleeve (20) to spindle, securing
with nut (19). NOTE: Assemble impellers with grooves in the
direction shown on page 4.
Assemble nozzle plate (18) and head to tool.
Assemble lock sleeve (29) to housing, aligning hole in lock
sleeve (29) with hole in housing.
_
_
•
•
Using a wrench on flats of nosepiece (34), unthread and re-
move from spindle, releasing collet (33).
_
_
Models 7980–2–( ) – Place head (7) in a vise and, using a
strap type wrench, unthread and remove housing (26).
Models 7980–A–( ) – Clamp wrench (30131) flatwise in a vise
and place slot in air inlet of tool on wrench. Using a strap type
wrench, unthread and remove housing (26).
Remove nozzle plate (18).
Insert a 1/8” diameter pin thru the hole in housing (26) and
_
Insert a 1/8” diameter pin thru hole in housing and lock sleeve
(29).
_
_
•
Assemble housing cap (32) to housing, tightening securely.
Assemble collet (33) and nosepiece (34) to spindle.
Models 7980–2–( ) – Grease and assemble ‘‘O” ring (9) to
stem valve (10). Assemble stem valve (10) and spring (11) to
head, securing with seal (12) and valve screw (13).
_
_
spindle (28), and remove nut (19).
Press spindle (28) out nose end of housing.
_
6
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M10
25
TYPICAL CROSS SECTION OF TOOL
MODEL 7980–2
MODEL 7980–A–( )
7
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TYPICAL CROSS SECTION OF TOOL
MODEL 7980–2–EU
8
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PN 4999–482
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