ARO 7845-E Operator's Manual - Page 4

Browse online or download pdf Operator's Manual for Drill ARO 7845-E. ARO 7845-E 12 pages. “2200” series drills

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MODEL IDENTIFICATION
MODEL
NUMBER
7850-E
7851-E
7852-E
LEVER HEAD TYPE THROTTLE
R.P.M.
TOTAL
MOTOR
GEARING
CHUCK
REDUCTION
ASSEMBLY
DRIVE
AUXILIARY
NUMBER
18,000
1:1
43139
41769
33907
4,500
4:1
43139
41771
33907
2,400
7.43: 1
43139
41770
33907
7853-E
1,100
16:1
43139
41771
40825
30016
7853-E-EU
1,100
16:1
43139
41771
40825
30016
7854-E
600
29.7:1
43139
41770
40825
30016
7855-E
325
55.2:1
43139
41770
40826
30016
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CANCELLED
MODELS
MODELS
WITH -EU ARE "EC" COMPLIANT
MODELS
GENERAL DESCRIPTION
AND OPERATION
Aro "2200" series drills are available with either a lever or pistol
grip type throttle and with 6 different speeds. The combination of
free speeds, throttle type and chuck capacities appear as models
above.
Lever throttle models feature a muffler, suspension bail, flush fit-
tings for lubrication of gearing and a 1/4" N.P.T.F. female air inlet
adapter.
Pistol grip models feature a built-in oiler, muffler, flush fittings for
lubrication of gearing and a 1/4" N.P.T.F. female air inlet adapter.
All models have a 1/2" - 20 threaded drive spindle for mounting
the chuck.
Safe and efficient operation of tour Aro drill can best be attained by
observing proper operating, inspection and maintenance proce-
dures.
Disconnect air supply from tool or shut off air supply and exhaust
(drain) line
of
compressed air BEFORE performing maintenance
or service to tool.
Before starting to disassemble or assemble this tool (any part or
completely), be sure to read "Inspection, Maintenance and Instal-
lation" section.
To minimize the possibility of parts damage and for convenience,
CHUCK
CAPACITY
3/8"
3/8"
3/8"
3/8"
3/8"
3/8"
3/8"
the steps for disassembly or assembly listed on the following
pages are recommended.
The basic sections and instructions for removing them from the
tool are as follows:
GEARING
SECTION
Secure the tool in a suitable holding device. Place a 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 hous-
ing, unthread and remove gearing sections. Models having both
drive and auxiliary gearing, separate using wrenches on flats of
ring gears.
MOTOR SECTION
With head of tool in a suitable holding device, remove motor hous-
ing with a strap type wrench (lever head tool only). On pistol grip
head tool, it may be necessary to tap open end of housing with a
soft face hammer to loosen motor from housing.
HEAD SECTION
Follow disassembly procedures as outlined in the preceding sec-
tions. Valve parts may be removed from head without removal of
head from tool.
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