ARO Bant-a-Matic 8245-B Operation Manual - Page 3

Browse online or download pdf Operation Manual for Drill ARO Bant-a-Matic 8245-B. ARO Bant-a-Matic 8245-B 12 pages. Self-feed

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SET-UP PROCEDURE WITH OPTIONAL

M102

HYDRAULIC CHECK

Assemble hydraulic check to mounting bracket and assemble

end of the Hydraulic Check Rotate extended spindle until the slot

mounting bracket to tool using washers (Y14-8) and cap screws

on the spindle is located midway between the highest and the

(Y154-48).

lowest settings

Measure distance from drill point to work piece - distance "Y".

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

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

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")

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

"A"-,

FEED RATE ADJUSTMENT

HYDRAULIC CHECK (SEE TABLE)

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).

- Pack bearing (70) with ARO 33153 grease and assemble to

spindle.

- 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.