GMC HD1400K Instruction Manual Download Page 10

10

Chuck replacement

Chuck removal
Always wear eye protection. 

Tighten the chuck around the shorter end of a hex key 

(not supplied) of 5mm or greater size. Using a wooden 

mallet or similar object, strike the longer end in the 

clockwise direction. This will loosen the screw inside the 

chuck.
1.  Open chuck jaws fully.
2.  Insert a phillips head screwdriver into front of chuck 

between jaws to engage screw head. 

Remove screw by turning clockwise. 

3.  Place the hex key in chuck and 

tighten. Using a wooden mallet or 

similar object, strike key sharply in 

the anti-clockwise direction. This 

will loosen the chuck so that it can 

be unscrewed by hand.

Chuck installation

1.  Screw the chuck on by 

hand as far as it will 

go and insert screw (LH 

thread).

2.  Tighten the chuck around 

the shorter end of a 

1/4”or large hex key 

(not supplied) strike the 

longer end in the clockwise direction with a wooden 

mallet.

3.  Remove the hex key and open the jaws fully. Tighten 

the screw in the centre of the chuck firmly.

Hints for use

Note.

 

When drilling into masonry the drilling rate is fast 

and burnout of the tip will occur if the drill bit is not 

constantly cleared. 

• 

Use only correctly sharpened drill bits, which are 

suitable for the material being drilled.

• 

To drill hard materials, firm pressure is required on 

the power tool. However, excessive pressure does not 

improve performance and places unnecessary pressure 

on the tool and its bit.

• 

When screw driving always use a pilot hole and set the 

speed dial to low. Press firmly on the screw head and 

pull the trigger gradually increasing the speed. It is 

always wiser to test the screw driving on a scrap piece 

of the same material you are using.

• 

Larger diameter holes in hard wood, steel and concrete 

have to be drilled at slower speeds. However, the motor 

must not be struggling with the operation. If the motor 

is struggling DO NOT continue working, pull the drill 

clear of the workpiece and run it on fast speed for a 

minute or so allowing the motor time to cool down 

before you continue with the task. If the job is too 

hard for the drill do not continue otherwise you could 

permanently damage the motor.

• 

Concrete drilling should be carried out on the highest 

speed.

DO NOT

 

overload motor when drilling concrete.

DO NOT

 

use too much pressure as the hammer action 

relies on the drill bit being able to move back and forward 

in the hole being drilled.
Always clear the flutes of the drill bit by removing it from 

the hole regularly.

Summary of Contents for HD1400K

Page 1: ...HD1400K 040413 HD1400K ED5 Melbourne Perth Auckland Hong Kong Shanghai Taipei New York Verona London Paris INSTRUCTION MANUAL 1400W 13mm Hammer Drill ...

Page 2: ... use from the date of the original purchase If found to be defective in materials or workmanship the tool or the offending faulty component will be replaced free of charge with another of the same item A small freight charge may apply The warranty replacement unit is only made available by returning the tool to the place of purchase with a confirmed register receipt Proof of purchase is essential ...

Page 3: ...n Australia or 0800 445 721 in New Zealand Introduction Your new GMC power tool will more than satisfy your expectations It has been manufactured under stringent GMC Quality Standards to meet superior performance criteria You will find your new tool easy and safe to operate and with proper care it will give you many years of dependable service Caution Carefully read through this entire Instruction...

Page 4: ...or use reduces the risk of electric shock Personal safety Stay alert watch what you are doing and use common sense when operating a power tool Do not use a power tool while you are tired or under the influence of drugs alcohol or medication A moment of inattention while operating power tools may result in serious personal injury Use safety equipment Always wear eye protection Safety equipment such...

Page 5: ...l s operation If damaged have the power tool repaired before use Many accidents are caused by poorly maintained power tools Keep cutting tools sharp and clean Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control Use the power tool accessories and tool bits etc in accordance with these instructions and in the manner intended for the particular...

Page 6: ...defenders and protective clothing including safety gloves Wear a dust mask if the drilling operation creates dust If in doubt do not plug in the tool Using a power source with a voltage less than the nameplate rating is harmful to the motor The tool must be used only for its prescribed purpose Any use other than those mentioned in this Manual will be considered a case of misuse The user and not th...

Page 7: ...ess metal chuck 2 Over moulded auxiliary handle 3 Depth gauge 4 Drilling hammer mode selector 5 Lock on button 6 Forward Reverse switch 7 Variable speed trigger switch 8 Speed dial 9 Spindle lock button 10 Metal gear box cover 2 1 8 7 5 3 9 6 4 10 ...

Page 8: ...steel rule for most accurate measurement and then turn the handle grip clockwise to tighten both the depth stop and the auxiliary handle in the required position Installing and removing bits CAUTION Always ensure that the drill is switched off and plug is removed from the power point before making any adjustments 1 The drill features a keyless chuck 1 and spindle lock button 9 for greater convenie...

Page 9: ...ection of rotation 1 The forward reverse switch 6 protrudes from one side of the drill to the other 2 The arrow head symbol on each side of the switch indicates the direction of drilling when the switch is pushed from that side The forward direction is selected when the arrow head symbol points to the front of the drill The reverse direction is selected when the arrow head symbol points to the rea...

Page 10: ...tly cleared Use only correctly sharpened drill bits which are suitable for the material being drilled To drill hard materials firm pressure is required on the power tool However excessive pressure does not improve performance and places unnecessary pressure on the tool and its bit When screw driving always use a pilot hole and set the speed dial to low Press firmly on the screw head and pull the t...

Page 11: ...e bit with oil to improve drilling action and increase bit life Masonry drilling For maximum performance use tungsten carbide tipped masonry impact bits when drilling holes in brick tile concrete etc Move drilling hammer mode selector to hammer mode Apply light pressure and medium speed for best results in brick Apply additional pressure and high speed for hard materials such as concrete When dril...

Page 12: ...ce to make suggestions or give comments about any GMC product With continuing product development changes may have occurred which render the product received slightly different to that shown in this instruction manual The manufacturer reserves the right to change specifications without notice Note Specifications may differ from country to country The GMC 777 Helpline operates from 7am to 7pm 7 day...

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