Milwaukee 4096 20A, 4125, 4120 Mounting the Meter Box, Mounting the Dymodrill Motor to the Stand

Mounting the Meter Box

For All Catalog Nos. (Fig. 3 & 4).

Ameter box is standard equipment with the Vac-U-Rig®, but it must be purchased separately for other Dymorigs (see "Accessories"). Attach the meter box to the cradle on the side opposite of the handle.

1.Slip the collar on the meter box over the stud on the cradle.

2.Position the meter box as desired and tighten the 1/4"-20 threaded socket head screw.

NOTE: For horizontal (wall) coring, the ammeter gauge must face upward in view of the operator. Otherwise, water flow from the water shut-off valve might drip into the outlets on the meter box.

Mounting the Dymodrill Motor to the Stand

For All Cat. Nos. (Fig. 5 & 6).

Dymorigs include a mounting bracket which mounts Dymodrill motors to the stand. An optional spacer assembly is available (see "Accesso- ries"), which can be used when coring with any bits; but it must be used with any bit over 10" (outside diameter).

1.To mount the motor, loosen the cradle lock. Raise the cradle on the column using the spoked handle to allow room for installing the bit later. Tighten the cradle lock.

NOTE: If the cradle is difficult to move on the column, loosen the gib screws (see "Adjusting the Gib Screws").

2.Fasten the mounting bracket or the optional spacer assembly to the Dymodrill (Fig. 5) motor using the four (4) 1/4"-20 threaded socket head screws and four (4) lock washers (they are the smaller of the two provided in separate accessory bag). Make sure the square key on the mounting bracket or spacer assembly engages with the slot on the Dymodrill motor.

3.Fasten the mounting bracket (or optional spacer assembly) and motor assembly to the cradle slot (Fig. 6) by inserting the four (4) 3/8"-16 threaded socket head cap screws and lock washers (they are the larger of the two provided in separate accessory bag) through the cradle. Place screws through the holes from the other side of the Dymorig and place lock washers on the side of the mounting bracket.

After the Dymodrill motor is mounted, make sure the cradle is rigid against the column to prevent the motor or bit from wobbling during coring. Before coring, try to wiggle the cradle and motor with your hands. If the cradle is secure, it should not move. If it does move, tighten the gib screws that secure the cradle to the column (see "Adjusting the Gib Screws").

Fig. 5

Fig. 6

Slot

Adjusting the Gib Screws (Fig. 7)

After the motor is mounted, make sure the cradle and motor are rigid against the column to prevent the motor or bit from wobbling during coring. Before coring, try to wiggle the cradle with your hands. If the cradle is secure, it should not move. If it does move, tighten the six (6) gib screws that secure the cradle to the column as follows.

Fig. 7

Gib

Screws

For Cat. No. 4125 & 4130 only.

Tighten the six (6) gib screws with the hex wrench (supplied in a sepa- rate accessory bag).

For Cat. No. 4115 & 4120 only.

To tighten the six (6) gib screws: loosen the hex nuts, tighten the screws and then tighten the hex nuts.

Selecting and Installing a Core Bit (Fig. 8)

MILWAUKEE offers both standard and premium Dymobits designed to cut through a variety of materials including poured concrete, steel-rein- forced concrete, and prestressed concrete. Always use clean, sharp bits.

Fig. 8	Water
	Control
	Valve

Copper

Washer

1.To install a bit, grease the spindle and bit threads to prevent corro- sion and to help prevent the bit from seizing on the threaded spindle.

2.Slip one copper washer (provided in separate accessory bag with the water shut-off valve components) onto the threaded spindle against the spindle shoulder. The bag should contain an extra cop- per washer; save it for future use.

3.Thread the bit securely onto the threaded spindle.

Selecting Speeds

Dymodrills operate in either high or low gear. Use low speed for large diameter bits and high speed for small diameter bits (see "Specifica- tions").

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