Hitachi Koki USA DH 40SA manual Applications, Prior to Operation, HOW to USE the Hammer Drill

◯Asphalt cutting (striking)

(1)Cutter

◯Syringe (for chip removal)

◯Hammer grease A 500 g (in a can)

30 g (in a green tube)

Optional accessories are subject to change without notice.

APPLICATIONS

◯Drilling holes in concrete

◯Drilling anchor holes

◯Crushing concrete, chipping, digging, and squaring (by applying optional accessories)

PRIOR TO OPERATION

1.Power source

Ensure that the power source to be utilized conforms to the power requirements specified on the product nameplate.

2.Power switch

Ensure that the power switch is in the OFF position. If the plug is connected to a power receptacle while the power switch is in the ON position, the power tool will start operating immediately, which could cause a serious accident.

3.Extension cord

When the work area is removed from the power source, use an extension cord of sufficient thickness and rated capacity. The extension cord should be kept as short as practicable.

4.How to install tool

NOTE

For tools such as a bull point and a cold chisel, use

only Hitachi genuine parts.

(1)Clean, then smear the tool shank with the grease provided in the green tube (Fig. 1).

(2)The grip can be rotated manually at an 60° angle. Fully turn the grip in the direction of the arrow A

as shown in Fig. 2 so that the mark on the grip

is aligned with the mark on the front sleeve. (Fig. 2)

(3)Insert the shank of the tool until it makes contact with the back side of the hole. (Fig. 2)

(4)Turn the grip in the direction of “Lock ” so that

the mark on the grip is aligned with the mark on the front sleeve. The tool is locked. Remove the drill bit in the reverse order. (Fig. 2)

5.Fixing Dust cup

When a worker is engaged in an operation with the main body faced upward, if a dust cup is fixed to a drill bit, the inside of a tool holder can be prevented from any possible invasion of dust. The dust cup should be fixed as explained below.

(1)Insert the dust cup into the drill bit. (Fig. 3)

(2)Fix the drill bit to the tool holder. (Fig. 4)

(3)Insert the drill bit until it hits the end of the hole, and make sure that the dust cup is not in contact with the tool holder. If the dust cup is found to be in contact with the tool holder, shift it a little forward.

HOW TO USE THE HAMMER DRILL

1. How to drill holes (Fig. 5)

(1)Pull the switch trigger after applying the drill bit tip to the drilling position.

(2)It is unnecessary to forcibly press the hammer drill main body. It is sufficient to slightly press the hammer drill to an extent that shavings are freely discharged.

CAUTION

Although this machine is equipped with a safety clutch, if the drill bit becomes bound in concrete or other material, the resultant stoppage of the drill bit could cause the machine body to turn in reaction. Ensure that the main handle and side handle are

gripped firmly during operation.

2.How to chip or crush (Fig. 6)

By applying the drill bit tip to the chipping or crushing position, operate the hammer drill by utilizing its empty weight.

Forcible pressing or thrusting is unnecessary.

3.Install the stopper (Fig. 7)

(1)Loosen the side handle and insert the straight portion of the stopper into the handle bolt hole.

(2)Move the stopper to the specified position and rotate the side handle clockwise to fix the stopper.

4.Warming up (Fig. 8)

The grease lubrication system in this unit may require warming up in cold regions.

Position the end of the bit so makes contact with the concrete, turn on the switch and perform the warming up operation. Make sure that a hitting sound is produced and then use the unit.

CAUTION

When the warming up operation is performed, hold the side handle and the main unit securely with both hands to maintain a secure grip and avoid being turned around by the drill.

DRILLING AND DRIVING-IN OPERATIONS FOR ANCHORS

Use the optional accessories for anchors, such as anchor adapter and taper shank adapter.

1. When a rotation striking anchor adapter is used.

(1)Install the self-drilling anchor in the anchor adapter (Fig. 9).

(2)Turn ON the switch and drill a base hole with the self-drilling anchor. (Fig. 10)

At the start of the hole-drilling slightly tilt the hammer drill to determine the hole position.

(3)After cleaning out dust with a syringe, attach the plug to the anchor tip and drive in the anchor with a manual hammer.

(4)After driving in the anchor, use the drift key to separate the anchor. (Fig. 11)

(5)By employing a manual hammer or pliers, snap off the tapered portion of the anchor. (Fig. 12)

CAUTION

Since the snapped-off tapered portion will fly out, pay attention to the snapping direction.