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Operator’s Manual
®
P R O F E S S I O N A L
8.0 Amp / Variable Speed / Reversible
1/2-in. Hammer Drill
Model No.
172.28129
3025736
Certified to
CAN/CSA-C22.2
No.745-1,745-2-1
Conforms to
UL STD 745-1, 745-2-1
Double Insulated
CAUTION: Read, understand and follow • WARRANTY
all Safety Rules and Oper ating Instructions • SAFETY
in this manual before using this product. • UNPACKING
• DESCRIPTION
Sears, Roebuck and Co., Hoffman Estates, IL 60179 U.S.A. • OPERATION
®
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TABLE OF CONTENTS SAFETY SYMBOLS The purpose of safety symbols is to attract your attention to possible dangers. Warranty……………………………...................................……………...Page 2 The safety symbols, and the explanations with them, deserve your careful attention and Safety Symbols……………………………...................................……... Page 3 understanding. The symbol warnings DO NOT by themselves eliminate any danger. The instructions and warnings they give are no substitutes for p
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SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS cont. TOOL USE AND CARE SAFETY ! WARNING: BE SURE to read and understand all instructions in this manual before using this power tool. Failure to follow all instructions may result in electric ! WARNING: BE SURE to read and understand all instructions before shock, fire and / or serious personal injury. operating this tool. Failure to follow all instructions listed below may result in electric shock, fire and /or serious personal i
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SAFETY INSTRUCTIONS cont. SAFETY INSTRUCTIONS cont. SAFETY SYMBOLS FOR YOUR TOOL ELECTRICAL SAFETY cont. The label on your tool may include the following symbols. 4. AVOID body contact with grounded surfaces, such as pipes, radiators, ranges and V.......................................................................Volts refrigerators. There is an increased risk of electric shock if your body is grounded. A....................................................................
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SAFETY INSTRUCTIONS cont. SAFETY INSTRUCTIONS cont. SAFETY RULES FOR HAMMER DRILLS cont. ! WARNING: Use of this tool can generate and /or disburse dust, which may 6. Maintain a firm grip on the hammer drill to resist starting torque. cause serious and permanent respiratory or other injury. Always use NIOSH / OSHA approved respiratory protection appropriate for the dust exposure. 7. Wear safety goggles or other eye protection. Hammering and drilling operations Direct particles aw
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UNPACKING DESCRIPTION KNOW YOUR HAMMER DRILL (Fig. 2) ! WARNING: Your tool should NEVER be connected to the power source when you are assembling parts, making adjustments, installing or removing NOTE: Before attempting to use this product, familiarize yourself with all bits, cleaning or when it is not in use. Disconnecting the drill will prevent operating features and safety rules. accidental starting, which could cause serious personal injury. Your Hammer Drill has a precision-b
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7 6 Keyed Chuck Chuck Jaws DESCRIPTION cont. OPERATION This Hammer Drill has the following features: cont. ! WARNING: Do not allow familiarity with tools to make you careless. 14. Metal Gear Box and Die-Cast Aluminum Gear Housing Remember that a careless fraction of a second is sufficient to inflict serious injury. For durability and long life. Helps protect tool from damage 15. High Impact-Resistant Housing ! WARNING: Always wear safety goggles or safe
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OPERATION cont. OPERATION cont. FORWARD / REVERSE LEVER (Fig. 5) 360° AUXILIARY HANDLE (Figs. 7 and 7a) The direction of bit rotation, forward or reverse, The auxiliary handle clamps to the front of the gear case as shown (see Fig. 7). Fig. 5 is controlled by the lever above the trigger switch. It can be rotated 360° to allow either right or left hand use, providing maximum balance Always have the trigger switch in the OFF position and control in any operating position. Reverse Forward when ope
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OPERATION cont. OPERATION cont. BUBBLE LEVEL (Fig. 12) SPINDLE LOCK (Fig. 10) The spindle lock is a convenience feature that allows you to tighten or loosen the chuck In order to insure a perfect right angle when jaws around a bit without having to use the chuck key. drilling / driving and hammer drilling into a 1. Unplug the hammer drill. workpiece, you can use the built-in bubble level on the back of the drill / driver. The bubble level is designed to work when ! WARNING: To preve
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OPERATION cont. OPERATION cont. ROTARY DRILLING (Fig. 14) cont. OPERATING THE DRILL AS A HAMMER DRILL 6. Always clamp the workpiece firmly. If When using your drill for percussion hammer drilling applications, make sure you have the Fig. 14 drilling thin material, use a wood “back-up” Rotary and Hammer Drilling Selector Switch in the Hammer Drilling position block to prevent splintering or damage to (see Page 13, Fig. 4). the workpiece. NOTE: When unplugging the drill, f
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4 5 6 7 MAINTENANCE MAINTENANCE cont. CHUCK REMOVAL ! Fig. 16 WARNING: To ensure safety and reliability, repairs, maintenance and (Fig. 16, 16a and 16b) adjustments MUST be performed by a qualified service technician at a Sears Service Center. The chuck may be removed and replaced with a new one. 1. Unplug the hammer drill. ! WARNING: For your safety, ALWAYS turn off switch and unplug drill from the power source before performing any maintenance or cleaning. ! WARNING:
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4 5 6 7 MAINTENANCE cont. PARTS LISTS TO RETIGHTEN A LOOSE CHUCK Fig. 17 (Figs. 17 and 17a) The chuck may become loose on the spindle and develop a wobble. Also, the chuck screw may become loose, causing the chuck jaws to bind and prevent them from closing. To tighten: 1. Unplug the hammer drill. ! WARNING: To prevent personal injury, ALWAYS disconnect the plug from power source BEFORE assembling parts, making adjustments or changing bits. 2. Open the chuck jaws Fig. 17a 3.
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PARTS LIST cont. PARTS LIST cont. HAMMER DRILL – MODEL NUMBER 172.28129 HAMMER DRILL – MODEL NUMBER 172.28129 Item No. Parts No. Part Description Qty. Item No. Parts No. Part Description Qty. Side handle set 1 Washer 1 101 200T0230009000A-00 42 200T0240076000A-00 1 1 1 200W2000022000A-00 Bolt 43 200T0050075000A-00 Compression spring 2 200T0230007000A-00 Depth ruler 1 44
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