ARO 7671-A User manual

OPERATOR’S MANUAL
INCLUDING:OPERATION,INSTALLATION& MAINTENANCE Released:
Tool & Hoist Products
2200 SERIES PISTOL GRIP DRILL
Revised: 8-19-93
1100 R.P.M.
Form: 1221-2
Model 7671-A
IMPORTANT: READ THIS MANUAL CAREFULLY BEFORE INSTALLING,
OPERATING OR SERVICING THIS EQUIPMENT.
OPERATING AND SAFETY PRECAUTIONS
Pneumatic tools should always be installed and used in accor-
dance with A.N.S.I. B186.1 “Safety Code For Portable Air Tools.” For maximum operating efficiency, the following air supply specifi-
cations should be maintained to this air tool:
CAUTION:
l Keep hands and clothing away from rotating end of tool.
l Wear suitable eye protection while operating tool.
l Use tool only for purposes for which it was intended.
l SHUT OFF and DISCONNECT AIR SUPPLY from tool BE-
FORE performing maintenance, service or disassembly of
tool.
l AIR PRESSURE - 90 PSIG (6 bar)
l AIR FILTRATION - 50 micron
. LUBRICATED AIR SUPPLY
l HOSE SIZE - 5/16” (8 mm) I.D.
An AR08 model 128231-800 air line FILTER/REGULATOR/LU-
BRICATOR (F.R.L.) is recommended to maintain the above air
supply specifications.
WARNING: Repeated prolonged operator exposure to vibrations
which may be generated in the use of certain hand-held tools
may produce Raynaud’s phenomenon, commonly referred to as
Whitefinger disease. The phenomenon produces numbness and
burning sensations in the hand and may cause circulation and
nerve damage as well as tissue necrosis. Repetitive users of
hand-held tools who experience vibrations should closely moni-
tor duration of use and their physical condition.
ROUTINE LUBRICATION REQUIREMENTS
Lack of or an excessive amount of lubrication will affect the perfor-
mance and life of this tool. Use only recommended lubricants at
below time intervals:
EVERY 8 HOURS OF TOOL OPERATION - Fill lubricator reser-
voirof recommended F.R.L. with spindle oil (29665). If an in line or
air line lubricator is not used, apply several drops of spindle oil
(29665) in air inlet.
EVERY 40 HOURS OF TOOL OPERATION - Flush tool with a
solution of three (3) parts cleaning solvent and one (1) part light oil.
After flushing, apply a small amount of spindle oil in air inlet and
run free for one minute to insure proper lubrication. Fill built-in oil-
er reservoir with spindle oil if an in line or air line lubricator is not
used.
EVERY 160 HOURS OF TOOL OPERATION - Lubricate gear-
ing. Pack bearings, coat shafts and lubricate gears with NLGI #l
“EP” grease (33153). Gearing should contain approximately l/4
oz. (7 g) of grease per set of planetary gearing.
AIR SUPPLY REQUIREMENTS
RECOMMENDED LUBRICANTS
After disassembly is complete, all parts, except sealed or shielded
bearings, should be washed with solvent. To relubricate parts, or
for routine lubrication, use the following recommended lubricants:
Where Used ARO Part # Description
Air Motor 29665 1 qt. Spindle Oil
“0” Rings & Lip Seals 36460 4 oz. Stringy Lubricant
Gears and Bearings 33153 5 lb. “EP” - NLGI#l Grease
For parts and service information, contact your local ARO distributor, or the Customer Service Dept. of the Ingersoll-Rand Dis-
tribution Center, White House, TN at PH: [phone], FAX: [phone].
ARO Tool & Hoist Products
Ingersoll-Rand Company
INGERSOLL-RAND®
1725 U.S. No. 1 North l P.O. Box 8000 l Southern Pines, NC 28388-8000
01993 THE ARO CORPORATION. PRINTED IN U.S.A.
PROFESSIONALTOOLS

DISASSEMBLY AND ASSEMBLY OF TOOLS
* 30018K KEY 30018 CHUCK
l
AUXILIARY GEARING
DRIVE GEARING
GEARING SECTION
41771 DRIVE GEARING ASS’Y. 4227 1 BEARING (4)
47590 WASHER 40841 SHAFT (12)
34490 RING GEAR
BEARING 33704
47589 WAVE WASHER
* INCLUDES 35967 GREASE FITTING
DISASSEMBLY
Secure tool in a suitable holding device. Place wrench on spacer
(33697) place chuck key in chuck and strike key a sharp blow to
loosen chuck. Remove chuck and spacer (33697). Using a
wrench on flats of ring gear and a strap wrench on motor housing,
unthread and remove gearing sections. Separate the gearing
sections using wrenches on flats of ring gears.
Remove nose housing (38379) seal (37774) and spacer
(33697). Grasp ring gear in one hand and tap threaded end of
spindle with a soft face hammer; spindle and components will
loosen from ring gear. NOTE: Further disassembly should be
done only if it should be necessary to replace a part, as Brinelling
of the bearing races may occur, making replacement necessary.
To disassemble completely, remove bearing (33706). Turn snap
ring on spindle so the open portion of the ring will allow the remov-
al of shaft. Remove shaft, releasing gear. Repeat for removal of
opposite shaft and gear.
ASSEMBLY
Assemble snap ring to spindle. Rotate snap ring, allowing installa-
tion of shafts. After both gears and shafts have been assembled to
spindle, rotate snap ring, locking shafts in place. Assemble bear-
ings to spindle and assemble washer (47590), wave washer
(47589) and spindle to ring gear. Assemble seal, nose housing
and spacer to gearing.
r 42271 BEARING (41
46417 GEAR 12)
(14 TEETH1
33708 RETAINING RING-,
40839 SPINDLE 33704 BEARING (2)
40842 SNAP RING
35270 RING GEAR
INCLUDES 35323 GREASE FITTING
34574 GEAR
I7 INT- I5 EXT TEE
40825 AUXILIARY GEARING ASS’Y.
(4:l)
Disassembly and assembly of the auxiliary gearing is similar to that of the drive gearing.

DISASSEMBLY AND ASSEMBLY OF TOOLS
MOTOR SECTION
Y 176.20 -
33705 BEARING 33712 END PLAT 33701 SPACER 33709 BEARING (FLUSH
FACE--INSTALL WITHFLUSH
37 II SPACER * FACE TOWARDS END PLATE)
33694 NUT
TOROUE TO 9-12 FT LBS
* 33699 SPACER 35679 CYLINDER 00 SEMS FASTENER 0
41577 MOTOR ASS’y.
*INCLUDED WITH 35679 CYLINDER
+ NOT INCLUDED WITH MOTOR ASS’Y. 0 TORQUE TO 28 IN. LBS
DISASSEMBLY
Remove motor assembly from housing. Using a spanner type
wrench, remove nut (33694) and sems fastener (33700). Grasp
cylinder in one hand and tap splined of rotor with a soft face ham-
mer; motor will come apart.
ASSEMBLY
Pack bearings with ARO 33153 grease, or equivalent, and coat
i.d. of cylinder with 29665 spindle oil upon assembly.
Assemble bearings into end plates. NOTE: Assemble bearing
(33709) into end plate with identification markings on the bearing
facing out. Assemble end plate (33710) with spacer (33701) to
rotor and secure with sems fastener (33700). NOTE: Torque fas-
tener to 28 in. Ibs. Assemble cylinder over rotor, aligning air inlet
holes in cylinder with air inlet slot of end plate and roll pin with hole
in end plate. Assemble blades to rotor. Assemble end plate
(33712) to rotor and cylinder, aligning hole in end plate with roll pin
in cylinder. Assemble nut (33694) to end plate and torque to 9 - 12
ft Ibs. Be sure rotor does not bind (if rotor binds, lightly tap splined
end of rotor with a soft face hammer to loosen) and assemble to
tool.
AUX. HANDLE ASS'Y
3

DISASSEMBLY AND ASSEMBLY OF TOOLS
PISTOL GRIP
(FORWARD DIRECTION)
DISASSEMBLY ASSEMBLY
a. Remove adapter (37073) “0” ring (Y325-13) insert assem-
bly (37981) and spring (33547). a. Assemble spring (32858) and trigger (39764) into housing
b. Depress trigger (39764) to release valve (39286) and “0” ring and secure with guide pin (39768) and locking screw (39769).
(Y325-7). b. Assemble valve (39286) with “0” ring (Y325-7), spring
c. To remove trigger (39764) remove locking screw (39769) and (33547) and insert assembly (37981) into housing, securing
with “0” ring (Y325-13) and adapter (37073).
c.
d. guide pin (39768) releasing trigger and spring (32858). To remove oilite casting (33190-l) insert screwdriver into mo- Assemble oilite casting (33190-l) into place in oil cavity, fill
tor end of housing and unscrew. cavity with oil and seal with washer (31389) and screw
(30747).
40177 PISTOL GRIP HOUSING ASSEMBLY
(FORWARD DIRECTION)
OlLlTE CASTING 33190-I WASHER 31369
OIL SCREW 30747
TRIGGER 39764
SPRING 32658
SCREW 39769
GUIDE PIN 39766
VALVE 39266
“0” RING Y325-7
HOUSING 37064
INCLUDES GREASE FITTING 35967)
SPRING 33547
MUFFLER ASS’Y. 43836
INSERT ASS'Y 37961
O-RING Y325-13
ADAPTER 37073
NOTE: PARTS SHOWN, EXCEPT 43836 MUFFLER, ARE
INCLUDED IN 40177 PISTOL GRIP HOUSING ASSEMLBY.
SCREEN 33911
l/4 l?T.F TH’D.-AIR INLET
PN49999-293