DW718 – Mitre Saw - 2helpU – Mitre Saw. go to: ... bevel and detent plates Rpm, Clamp Washer,...

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INDEX - PREVIOUS - NEXTDW718

EUROPEAN SERVICE REPAIR TRAINING

DW718 – Mitre Saw

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•Service Tooling Application and Use 5.3•Illustrated Tips 5.4

6 Summary Repair Notes•Useful Information 6.1•Strip Down / Repair / After Repair 6.2•Safety Notes 6.3

7 Modifications & Product Updates•Engineering News 7.1•Quality Changes 7.2

8 Additional Training Information•Battery Performance 8.1•Battery Tester 8.2•Hammer Mechanism 8.3•Good Practices 8.4•Cordless Motor test unit 8.5

EUROPEAN SERVICE REPAIR TRAINING

2 Product Information•Customer Requirements 2.1•Marketing Information 2.2•Features & Benefits 2.3•Applications 2.4•Technical Information/Specifications 2.5

3 Service Drawings

4 Repair Instructions•Diagnosis and Root Cause 4.1•Strip Down Guidelines/Procedures 4.2•Repair Assembly Guide 4.3

5 Video & Animation Instructions•Disassembly 5.1•Re-assembly 5.2

Contents

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2 Product InformationCustomer Requirements2.1

Slide Mitre Saw CTQ Research

Finish = Cut Quality

Ease of Use = Fence System Bevel Detents

0123456789

10

Accur

acy

Finish

Cut Cap

acity

Mitre S

cale

Ease

of U

se Size

Weight

Price

Groov

ing

Dust C

oll.

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2 Product InformationMarketing Information2.2

DW718-QSDW718-GBDW718-LX

DW718V-QSDW718V-GBDW718V-LX

DW718-B4DW718-XE

V indicates factory fitted laser systemDW708 WILL BE DISCONTINUED FROM AUGUST 2005

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2 Product InformationMarketing Information2.2

DW718 - 305mm Compound Slide Mitre Saw

•Cam action mitre lock function makes mitre setting faster and easier allowing the user to quickly adjust angles between 0° - 60° left and 0° - 50° right•The innovative grooving stop allows the adjustment of the cutting depth for grooving and rebating applications.•The large dual sliding fence gives maximum support in large material cuts at any angle or combination of angles.•Linear horizontal rails utilise bronze guides to provide maximum precision when cutting materials up to 345mm wide.•New quick release bevel setting provides accurate and simple setting of bevel angles up to 48° left and right.•Compact and lightweight design characteristics deliver a saw with enormous capacity which is easy to transport around the jobsite

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2 Product InformationFeatures & Benefits2.3

1. Improved Accuracy

2. Improved Cut Quality

3. Greater Horizontal Capacity 34% Greater than the competition

4. Greater Vertical Capacity

5. Improved Miter System

6. Smaller Size

7. Lighter Weight

8. Improved Bevel System

9. Sustaining 305mm Share

Fence, bevel and detent plates

Rpm, Clamp Washer, Plate Thickness

25% Greater than the competition

19% < 708, only 8% > 250mm sawsImproved center of gravity

9 Positive stops

Absolute domination

Cam lock, detent plate, lock off

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2 Product InformationFeatures & Benefits2.3.1

Accuracy

• New Precise Mitre & Bevel System

• New Step-Up Machined Fence Support

• New Rail Support Clamp System

Capacity

• New Design Delivers Best-in-Class Crosscut Capacity

• Tall Fence Design Delivers Highest Vertical Capacity in its Class (160mm Baseboard)

DW718

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Ease of Use

Portability

DW718

• Thumb Actuated Mitre Lock

• New Easy Access Bevel Lock

• New Bevel Detent System

• DEWALT Laser Compatible

•Smallest 305mm Slide Miter Saw –Packs up Smaller than Hitachi 250mm Slide

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Accuracy Improvements:- Improve fence straightness- Fence perpendicularity- Table post- Mitre detent spring

Cut Quality: 0.1mm- é blade washer size 66mm- New DEWALT blade 2mm plate

Horizontal Cutting Capacity:- At Base Fence: 355mm - At Secondary Fence: 406mm

Vertical Cutting Capacity: - At Fence: 163mm - At Full Extension: 91mm

Mitre System: - Right Capacity: 60°- Left Capacity: 50°- Detent System: Hard

Size: - Height: 396mm - Length: 470mm - Width: 770mm

Weight: 24.8kgGrooving: 150mm Bevel System:

- # of Detents: 9 - Degree of Detents: 0,22.5,33.9,45,48- Detent Setting Location: Trunion- Scale Location: Trunion- Tightening Location: Trunion

Rail System:- Design Horizontal - Diameter 25mm

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2 Product InformationApplications2.4

PRIMARY USERS APPLICATIONS Joiners First and second fix applications, trim carpentry, stud walling. Carpenters Large section carpentry, stair building (tread and riser), Furniture

manufacture. Builders, Roofers Large roof truss compound mitres. Window Manufacturer Aluminium and wooden frame sections and mitres. Kitchen Fitters Trim carpentry, second fix sill and skirt mitres, cornice compound

mitres. Contractors Fencing

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2 Product InformationTechnical Information / Specifications2.5

No Load Amps (Cordless Motors)

960960Output Watts

16001600Input Watts

1900-34001900-3400No Load Speed / RPM

21.5mm21.5mmInitial Brush Length

1.55O6.50OField / Stator Resistance Brake

0.17O0.81OField / Stator Resistance Run

0.28O0.95OArmature / Rotor Resistance

5050Frequency

115230Voltage

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3 Service Drawings

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3 Service Drawings

Handle Wiring

Motor Cable•White - connects to Red from

Electronic Module.•Yellow - connects to Terminal 2 on

switch – Bottom.•Red - connects to Terminal 2 on

switch – Top.•Black – connects to Terminal 1 on

switch – Top.

Electronic Module•Red - connects to White from the

motor.•White - connects to White from

the connector block plusBlack from the suppressor.

•Black - connects to Terminal 1 onswitch - Bottom plus Blackfrom the suppressor.

•White/Orange – Plugs into thepotentiometer.

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4 Repair InstructionsDiagnosis and Root Cause4.1

DiagnosisCheck the unit is not plugged in

• Check Cable• Check whether blade is tight• Check condition of blade• Check condition of drive belt• Check guard operation

Plug unit in• Quick test and check all functions• Make a test cut• Check for accuracy

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4 Repair InstructionsStrip Down Guidelines / Procedures4.2

Blade Removal

Hold guard in the up position and loosen the guard plate screw. Hold in the spindle lock pin and use spanner supplied to remove the blade bolt. Undo bolt in a

clockwise direction

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4 Repair InstructionsStrip Down Guidelines / Procedures4.2.1

Guard Removal

Remove 2 Torx 20 screws as shown by red arrows and remove the guard linkage

Remove 2 Torx 20 screws as shown by red arrows and remove the guard

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Removal of Switch Handle

Remove 2 screws and lift off access panel. This is where the laser plugs in.Remove 1 screw and remove the handle.Remove ?? Screws and remove handle cover.Note how handle is wired and unplug/unscrew all connections.Remove handle.

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Wiring Layout Motor Cable

White - connects to Red from Electronic Module.Yellow - connects to Terminal 2 on switch –Bottom.Red - connects to Terminal 2 on switch – Top.Black – connects to Terminal 1 on switch –Top.

Electronic Module

Red - connects to White from the motor.White - connects to White from the connector block plus Black from the suppressor.Black - connects to Terminal 1 on switch -Bottom plus Black from the suppressor.White/Orange – Plugs into the potentiometer.

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Removal of Belt cover & Electronics

Belt cover can be removed – Electronic module can be removed by undoing 1 Torx 20 screw.

Please handle this component with care

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Removal of Belt & Motor

Measure belt at centre before removal – appx 10 mm

at centre.

Slacken belt tension screw – Remove belt

Remove 6 screws – Remove motor

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Motor Disassembly

Normal procedure to dismantle motor

Note condition of brushes and run time

Appx 1mm of wear per 10 hours

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Motor Disassembly

1 Care to be taken with field leads

2 Field inserts can be damaged

3 Cable clamp can be released

4 Note black side to brushes

1 2 3

4

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Motor Disassembly

Correct orientation of field and field case

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Field & Armature – Checking resistances

Armature and field coil readings can be checked per specifications

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Arm Removal

Arm MUST be taken to the 90 degree position

Damaged will occur if this is note done

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Arm Removal

Spring must be free

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Arm Removal

1 23

4 1.Loosen 2 grub screws

2. Return arm to 90 degree

3. Remove pin

4. Check condition of washers

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4 Repair Instructions

Spindle and pulley is complete sub assembly

Strip Down Guidelines / Procedures4.2.13

Pulley and Gear Removal

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Bevel Lock

Remove back cover to expose bevel lock system

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Bevel Lock

Bevel detent lever and spring and how it works

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Bevel Lock

Bevel detent lock removed

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Bevel Lock

How the system works

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Fence Removal1

2

3

1 & 2 Remove 5 torx 40 screw to lift fence off

3. New fence recess to aid fence set up in service

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Mitre Latch

Mitre latch system

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Mitre Latch

Correct layout

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4 Repair Instructions

Table Removal

Inner table removal

4.2.21 Strip Down Guidelines / Procedures

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5 Video & Animation InstructionsService Tooling Application and Use5.3

Service Tool 559626-99 must be used to check and reset if required the saw blade set up

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Make a note of the type number and date code.Carry out a quick test and check all functions before dismantling (charge the battery). Understand the root cause of the failure's).

Before Dismantling

6 Summary Repair NotesUseful Information6.1

Keep your workbench/Station absolutely clean.Check spare parts for dirt, dust and corrosion. Exchange all parts showing wear.Use only original spare parts.Always use service tooling where available.

During the Repair

After repair run in the unit and quick test all functions. In drill position the clutch has to lock Make sure that the unit goes back to the customer in a clean condition, with the tool tag attached and the box is complete.

After the Repair

DW718 – Mitre Saw - 2helpU – Mitre Saw. go to: ... bevel and detent plates Rpm, Clamp Washer,...

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