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Hitachi WR18DL [10/94] English

English

(4) Tightening conditions

The tightening torque differs according to the torque

ratio; class, and length of bolts even when bolts with

the same size threads are used. The tightening torque

also differs according to the condition of the surface

of workpiece through which the bolts are to be

tightened. When the bolt and nut turn together, torque

is greatly reduced.

(5) Using optional parts (WR14DL, WR18DL)

The tightening torque is reduced a little when an

extension bar, universal joint or a long socket is used.

(6) Clearance of the socket (WR14DL, WR18DL)

A worn or deformed hex. or a square-holed socket

will not give an adequate tightness to the fitting

between the nut or anvil, consequently resulting in

loss of tightening torque.

Using an improper socket which does not match to

the bolt will result in an insufficient tightening torque.

MAINTENANCE AND INSPECTION

1. Inspecting the driver bit (WH14DL, WH18DL)

Using a broken bit or one with a worn out tip is

dangerous because the bit can slip. Replace it.

2. Inspecting the socket (WR14DL, WR18DL)

A worn or deformed hex. or a square-holed socket will

not give an adequate tightness to the fitting between

the nut or anvil, consequently resulting in loss of

tightening torque. Pay attention to wear of a socket

holes periodically, and replace with a new one if needed.

3. Inspecting the mounting screws

Regularly inspect all mounting screws and ensure

that they are properly tightened. Should any of the

screws be loose, retighten them immediately. Failure

to do so may result in serious hazard.

4. Maintenance of the motor

The motor unit winding is the very “heart” of the

power tool.

Exercise due care to ensure the winding does not

become damaged and/or wet with oil or water.

5. Inspecting the carbon brushes (Fig. 13)

The motor employs carbon brushes which are

consumable parts. Since and excessively worn carbon

brush can result in motor trouble, replace the carbon

brush with new ones when it becomes worn to or

near the “wear limit” P. In addition, always keep

carbon brushes clean and ensure that they slide freely

within the brush holders.

NOTE

When replacing the carbon brush with a new one, be

sure to use the Hitachi Carbon Brush Code No. 999054.

6. Replacing carbon brushes

Take out the carbon brush by first removing the

brush cap and then hooking the protrusion of the

carbon brush R with a slotted head screw driver,

etc., as shown in Fig. 15.

When installing the carbon brush, choose the direction

so that the nail of the carbon brush Q agrees with the

contact portion outside the brush tube S. Then push

it in with a finger as illustrated in Fig. 16. Lastly,

install the brush cap.

CAUTION

Be absolutely sure to insert the nail of the carbon

brush into the contact portion outside the brush tube.

(You can insert whichever one of the two nails

provided.)

Caution must be exercised since any error in this

operation can result in the deformed nail of the carbon

brush and may cause motor trouble at an early stage.

7 Cleaning of the outside

When the impact driver and impact wrench are

stained, wipe with a soft dry cloth or a cloth moistened

with soapy water. Do not use chloric solvents, gasoline

or paint thinner, as they melt plastics.

8. Storage

Store the impact driver and impact wrench in a place

in which the temperature is less than 40°C, and out of

reach of children.

9. Service parts list

A : Item No.

B : Code No.

C : No. Used

D : Remarks

CAUTION

Repair, modification and inspection of Hitachi Power

Tools must be carried out by a Hitachi Authorized

Service Center.

This Parts List will be helpful if presented with the

tool to the Hitachi Authorized Service Center when

requesting repair or other maintenance.

In the operation and maintenance of power tools,

the safety regulations and standards prescribed in

each country must be observed.

MODIFICATIONS

Hitachi Power Tools are constantly being improved

and modified to incorporate the latest technological

advancements.

Accordingly, some parts (i.e. code numbers and/or

design) may be changed without prior notice.

GUARANTEE

We guarantee Hitachi Power Tools in accordance with

statutory/country specific regulation. This guarantee does

not cover defects or damage due to misuse, abuse, or

normal wear and tear. In case of complaint, please send

the Power Tool, undismantled, with the GUARANTEE

CERTIFICATE found at the end of this Handling instruction,

to a Hitachi Authorized Service Center.

NOTE

Due to HITACHI’s continuing program of research and

development, the specifications herein are subject to

change without prior notice.

Содержание

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English 4 Tightening conditions The tightening torque differs according to the torque ratio class and length of bolts even when bolts with the same size threads are used The tightening torque also differs according to the condition of the surface of workpiece through which the bolts are to be tightened When the bolt and nut turn together torque is greatly reduced 5 Using optional parts WR14DL WR18DL The tightening torque is reduced a little when an extension bar universal joint or along socket is used 6 Clearance of the socket WR14DL WR18DL A worn or deformed hex or a square holed socket will not give an adequate tightness to the fitting between the nut or anvil consequently resulting in loss of tightening torque Using an improper socket which does not match to the bolt will result in an insufficient tightening torque MAINTENANCE AND INSPECTION 1 Inspecting the driver bit WH14DL WH18DL Using a broken bit or one with a worn out tip is dangerous because the bit can slip Replace it 2 Inspecting the socket WR14DL WR18DL A worn or deformed hex or a square holed socket will not give an adequate tightness to the fitting between the nut or anvil consequently resulting in loss of tightening torque Pay attention to wear of a socket holes periodically and replacewith a new one if needed 3 Inspecting the mounting screws Regularly inspect all mounting screws and ensure that they are properly tightened Should any of the screws be loose retighten them immediately Failure to do so may result in serious hazard 4 Maintenance of the motor The motor unit winding is the very heart of the power tool Exercise due care to ensure the winding does not become damaged and or wet with oil or water 5 Inspecting the carbon brushes Rg 13 The motor employs carbon brushes which are consumable parts Since and excessively worn carbon brush can result in motor trouble replace thecarbon brush with new ones when it becomes worn to or near the wear limit In addition always keep carbon brushes clean and ensure that they slide freely within the brush holders NOTE When replacing the carbon brush with a new one be sure to use the Hitachi Carbon Brush Code No 999054 6 Replacing carbon brashes Take out the carbon brush by first removing the brush cap and then hooking the protrusion of the carbon brush with a slotted head screw driver etc as shown in Rg 15 When installing thecarbon brush choosethedirection so that the nail of thecarbon brush agrees with the contact portion outsidethebrush tube Then push it in with a finger as illustrated in Fig 16 Lastly install the brush cap 9 CAUTION Be absolutely sure to insert the nail of the carbon brush into the contact portion outside the brush tube You can insert whichever one of the two nails provided Caution must be exercised since any error in this operation can result in the deformed nail of thecarbon brush and may cause motor trouble at an early stage 7 Cleaning of the outside When the impact driver and impact wrench are stained wipe with a soft dry cloth or a cloth moistened with soapy water Do not use chloric solvents gasoline or paint thinner as they melt plastics 8 Storage Store the impact driver and impact wrench in a place in which the temperature is less than 40 C and out of reach of children 9 Service parts list A Item No B Code No C No Used D Remarks CAUTION Repair modification and inspection of Hitachi Power Tools must be carried out by a Hitachi Authorized Service Center This Parts List will be helpful if presented with the tool to the Hitachi Authorized Service Center when requesting repair or other maintenance In the operation and maintenance of power tools the safety regulations and standards prescribed in each country must be observed MODIFICATIONS Hitachi Rower Tools are constantly being improved and modified to incorporate the latest technological adv ancem ents Accordingly some parts i e code numbers and or design may be changed without prior notice GUARANTEE We guarantee Hitachi Power Tools in accordance with statutory country specific regulation Thisguaranteedoes not cover defects or damage due to misuse abuse or normal wear and tear In case of complaint please send the Rower Tool undismantled with the GUARANTEE CERTIFICATEfound attheend of this Hand ling instruction to a Hitachi Authorized Service Center NOTE Due to HITACHI S continuing program of research and development the specifications herein are subject to change without prior notice

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