Milwaukee 5337-20 Manuel De L'utilisateur page 6

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. Spall-
ing 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 rotation is available. Only
chisels and other "hammering-only" accessories
should be used.
Cat. No. 5339-20
The cat. no. 5339-20 demolition ham-mer is for
"hammering-only". No rotation is available. The ac-
tion selector is used to select the action:
1. Hammering only.
"hammering only" accessories.
Use this setting for chiseling.
2. Chisel adjustment.
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.
Cat. No. 5340-20
The cat. no. 5340-20 rotary hammer has "hammer-
ing-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
tool (see "Inserting Bits and Chisels"). The rotational
drive mechanism engages with the bit, resulting in
"hammering with rotation" action.
For use with Hammering
Only
Use this
Chisel
Adjustment
shank into the nose of the
Cat. No. 5342-20
Cat. no. 5342-20 rotary hammer has "hammering-
only", "hammering with rotation", and "chisel adjust-
ment" settings. The action selector is used to select
the action:
Hammering
Only
1. Hammering only. For use with "hammering only"
accessories. Use this setting for chiseling.
2. Hammering with rotation.
for drilling holes with drill bits. Do not use "ham-
mering with rotation" when using chisels or other
"hammering-only" accessories.
3. Chisel adjustment.
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.
To reduce the risk of injury, when
WARNING
using chisels or other hammering-
only accessories in cat. no. 5342-20, the action
selector must be set to the "hammering only"
position.
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.
Cold Hammering
If the hammer is stored for a long period of time or at
cold temperatures, the lubrication may become stiff
and the tool may not hammer initially or the hammer-
ing may be weak. If this happens:
1. Insert a chisel into the tool.
2. Pull the trigger and apply the chisel against a scrap
piece of concrete.
3. Turn the tool On and Off every few seconds. After
15 seconds to 2 minutes, the tool will start ham-
mering normally. The colder the hammer is, the
longer it will take to warm up.
Operator Force
These hammers feature the Vibration Isolation
System to provide the operator with comfort without
sacrificing power or performance. The motor housing
is suspended independently from the switch handle.
Insulating elements absorb vibration when hammer-
ing and drilling.
6
Chisel Hammering
Adjustment
with Rotation
Use this setting
Use this setting to adjust