Milwaukee 5340-21 Operator's Manual download pdf (Page 7)

page 7

1. Hammering only. For use with "hammering only" accessories. Use

this setting for chiseling.

2. Chisel adjustment. Use this setting to adjust the angle of the chisel

blade in relation to the tool. With a chisel mounted in the tool, twist

the chisel to the desired angle. Then, rotate the action selector to the

"hammering only" setting for use.

NOTE: To engage the hammering mechanism, maintain pressure on the

bit/chisel. When pressure is released, hammering stops.

OPERATION

To reduce the risk of injury, wear safety goggles or glasses with

side shields. Unplug the tool before changing accessories or

making adjustments.

WARNING

Electronic Feedback Control Circuit

These hammers have an Electronic Feedback Control Circuit (EFCC) which

helps improve the operation and life of the tool.

Feedback Control

The electronic speed control circuit allows the tool to maintain constant

speed and torque between no-load and load conditions.

Soft Start

The Soft-Start feature reduces the amount of torque reaction to the tool and

the user. This feature gradually increases the motor speed up from zero to

the speed set by the speed control dial.

Selecting Speed

The speed control dial on these hammers allows the user to adjust the

rotating speed (RPM) and the impact rate (BPM) of the tool.

To change the speed, set the speed control dial to the desired setting.

• Lower speeds provide more control when starting holes and reduce

'spalling' on breakthrough. Spalling occurs when pieces of material chip

off around the drilled hole on breakthrough. When chiseling in soft or

brittle materials, use lower speeds to reduce damage to surrounding

areas of the material.

• Higher speeds provide faster penetration when drilling and chiseling in

demolition work.

Selecting Action

Cat. No. 5337-20

The cat. no. 5337-20 demolition hammer is for "hammering-only". No rota-

tion is available. Only chisels and other "hammering-only" accessories

should be used.

Cat. No. 5339-20 (Fig. 3)

The cat. no. 5339-20 demolition hammer is for "hammering-only". No rotation

is available. The action selector is used to select the action:

Fig. 4

Hammering Only

Hammering with

Rotation

Chisel Adjustment

Cat. No. 5340-20

The cat. no. 5340-20 rotary hammer has "hammering-only" and "hammering

with rotation", depending on the type of shank inserted into the tool.

For "hammering-only": Insert a chisel or other "hammering-only" accessory

with a 3/4" Hex with 21/32" Round shank into the nose of the tool (see

"Inserting Bits and Chisels"). The rotational drive mechanism will run but not

engage with the chisel, resulting in "hammering-only" action.

For "hammering with rotation": Insert a drill or coring bit with a spline

xxx shank into the nose of the tool (see "Inserting Bits and Chisels"). The

rotational drive mechanism engages with the bit, resulting in "hammering

with rotation" action.

Cat. No. 5342-20 (Fig. 4)

Cat. no. 5342-20 rotary hammer has "hammering-only", "hammering with

rotation", and "chisel adjustment" settings. The action selector is used to

select the action:

1. Hammering only. For use with "hammering only" accessories.

Use this setting for chiseling.

2. Hammering with rotation. Use this setting for drilling holes with

drill bits. Do not use "hammering with rotation" when using chisels or

other "hammering-only" accessories.

3. Chisel adjustment. Use this setting to adjust the angle of the chisel

blade in relation to the tool. With a chisel mounted in the tool, twist

the chisel to the desired angle. Then, rotate the action selector to the

Hammering only setting for use.

NOTE: To engage the hammering mechanism, maintain pressure on the

bit/chisel. When pressure is released, hammering stops.

WARNING

Starting and Stopping the Tool

1. To start the tool, pull the trigger.

2. To stop the tool, release the trigger.

Locking the Trigger (Cat. No. 5337-20, 5339-20 only)

The lock button on the demolition hammers holds the trigger in the "On"

position for continuous use.

1. To lock the trigger, hold in the lock button while pulling the trigger.

Release the trigger.

2. To unlock the trigger, pull the trigger and release. The lock button will

pop out.

Fig. 3

Hammering Only Chisel Adjustment

To reduce the risk of injury, when using chisels or other hammer-

ing-only accessories in cat. no. 5342-20, the action selector must

be set to the "hammering only" position.

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Milwaukee 5340-21 Operator's Manual Page 7

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