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SET-UP PROCEDURE WITH OPTIONAL
M102
HYDRAULIC CHECK
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Assemble hydraulic check to mounting bracket and assemble
end of the Hydraulic Check Rotate extended spindle until the slot
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mounting bracket to tool using washers (Y14-8) and cap screws
on the spindle is located midway between the highest and the
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(Y154-48).
lowest settings
Measure distance from drill point to work piece - distance “Y”.
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Start drill unit and the drill wiII advance at a rapid rate until the
Distance “X” between hydraulic check plunger and trip bracket
trip bracket contacts plunger of hydraulic check
must be less than distance “Y” to prevent damage to drill point
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Slowly rotate the Hydraulic Feed Rate counterclockwise for faster
when it approaches the work piece.
feed rate or clockwise for slower feed rote
Loosen the cap screws (Y154-48) and position hydraulic check
to obtain correct setting for distance “X”.
Tighten cap screws (Y154-48) securely before operating unit.
Increase the air flow thru the Feed Control Valve marked “F” by
opening two (2) full turns from closed position. This will allow drill
to advance rapidly until the trip bracket contacts plunger of hydraul-
ic check.
The Hydraulic Feed Rate Adjustment is located at the nameplate
TO CONTROL BREAKTHROUGH
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Positron hydraulic check so the distance between the plunger and
the trip bracket (distance “X”) IS less thon the distance from the
drill point to the opposite side of the work piece (distance “W”)
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Set-up of the self-feed drill unit will be the some as explained in
Set-up Procedure, page 1.
ADJUSTMENT SCREW “B”
11/16” BIT PENETRATION (33906 CHUCK)
ADJUSTMENT SCREW
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“A”-,
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FEED RATE ADJUSTMENT
HYDRAULIC CHECK (SEE TABLE)
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MOUNTING BRACKET 40298
PARTS INDICATED BY ASTERISK (*) ARE INCLUDED
IN 40301-( ) HYDRAULIC CHECK ASSEMBLY. ,
SEE PAGE 11 FOR HYDRAULIC CHECK DIMENSIONAL DATA.
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 “0” rings when servicing this tool.
Use only genuine ARO replacement parts for this tool. When or-
dering, specify pat-t number, description, tool model number and
serial number.
GEARING DISASSEMBLY
_ Remove chuck from tool.
_ Thread adjustment screws (6 and 7) all the way back and push
the piston rod (48) all the way forward to expose wrench flats
of motor housing (51) from the outer sleeve (41).
Using wrenches on flats of ring gear and motor housing, unthread
- gearing from motor housing.
If tool has double gearing, unthread ring gear (83) from ring gear
- (81).
DIRECT DRIVE MODELS: Unthread and remove bearing lock nut
- (103).
_ Grasp ring gear in one hand and tap the threaded end of spindle
with a soft face hammer; spindle and components will loosen from
ring gear.
Remove bearing(s) and shafts from spindle to remove planet gears.
- To remove bearings (84) from ring gear, remove lock nut (86).
48117-1 GEARING DISASSEMBLY
Remove chuck from gearing.
- Thread adjustment screws (6 and 7) all the way back and push
the piston rod (48) all the way forward to expose wrench flats
of motor housing (51) from outer sleeve (41).
Using wrenches on flats of ring gear and motor housing, unthread
- gearing from motor housing.
Pull spindle (96) and components from ring gear.
- Remove bearing (70) and shafts (71) to release gears (74).
Remove bearing (70) and shafts (91), releasing gears (90 and 89).
- Unthread lock nut (86), releasing spindle (93) and bearing (94).
GEARING ASSEMBLY
_ Assemble gears to spindle and secure with shafts
Align notch at end of shaft with step on spindle (align notch of
- shaft with spacer (80) for auxiliary gearing).
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Pack bearing (70) with ARO 33153 grease and assemble to
spindle.
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Lubricate gears of spindle liberally with ARO 33153 grease and
assemble spindle to ring gear.
Pack bearings (84) with ARO 33153 grease and assemble to spin-
- dle with the UNMARKED faces of bearing facing each other (iden-
tification markings on bearing facing out).
_ Assemble seal (87) to lock nut (86) and secure bearings (84)
with lock nut.
DIRECT DRIVE MODELS: Assemble bearing lock nut (103) to spindle.
- Assemble gearing to tool.
_ Assemble chuck (88) to tool.
48117-1 GEARING ASSEMBLY
_ Assemble gears (74) to spindle (96), securing with shafts (71).
_ Assemble gears (89 and 90) to spindle, securing with shafts (91).
NOTE: Assure each shaft (91) contains 15 needle bearings.
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