Makita N5900B Handbuch

Models No.

Description

PRODUCT

TECHNICAL INFORMATION

CONCEPT AND MAIN APPLICATIONS

Specification

Standard equipment

Optional accessories

< Note > The standard equipment for the tool shown may differ from country to country.

P 1 / 9

Dimensions : mm ( " )

N5900B

The above product has been developed as a less expensive

version of the existing model 5900B, with taking over the

same feature and benefit.

This product is equipped with steel made safety cover.

Circular Saw 235mm (9-1/4")

Width ( W-1 )

Width ( W-2 )

Height ( H-1 )

Height ( H-2 )

Length ( L ) 380 (15)

255 (10)

165 (6-1/2)

287 (11-1/4)

192 (7-9/16)

H-1

H-2

W-1

W-2

Continuous Rating (W)

Voltage (V) Cycle (Hz) Input Output Max. Output(W)

120

110 950

950

1,650

1,650 2,300

2,300

2,600

4,100

235 (9-1/4)

Double insulation

25 (1)

85 (3-3/8)

60 (2-3/8)

53 (2-1/16)

7.0 (15.4)

2.5 (8.2) 2.0 (6.6) for Australia

2,000

1,300

220

230

240

15.0

9.6

9.2

8.8

Current (A)

50 / 60

No load speed : rpm.= min.-1

Size of blade

Max.cutting

capacities

: mm (")

Net weight : Kg (lbs.)

Cord length : m (ft)

Diameter : mm (")

Arbor : mm (")

at 90

at 45

at 50

Protection against electric shock

Electric brake

* T.C.T. saw blade 235mm 20T .......................... 1 pc.

* Guide rule ......................................................... 1 pc.

* Wrench 13 ....................................................... 1 pc.

* Various saw blade

* Joint for connecting with vacuum cleaner

Repair P 2 / 9

< 1 > Lubrication

Apply MAKITA grease N. No.1 to the following portions designated by black triangle to protect

parts and product from unusual abrasion.

Position

No. Parts item Amount : g

(oz)

Portion to be lubricated

20 Blade case

Bearing box

Gear room where helical gear 39 rotates.

Cylindrical portion where safety cover moves.

Safety cover

Gear section

820 (0.71)

0.5 (0.02)

Fig. 1

< 2 > Disassembling gear section

First of all, detach the saw blade for your safety repair.

( 1 ) Remove retaining ring S-45. See Fig. 2.

( 2 ) Remove safety cover, and disconnect tension spring 5 from blade case. See Fig.3.

( 3 ) Remove gear section by unscrewing 2 pcs. of counter sunk head screw M6x20. See Fig. 4.

Fig. 2 Fig. 3

Fig. 4

Tension

spring 5

Safety cover

Retaining

ring S-45

Gear section

Counter sunk

head screw M6x20

Repair P 3 / 9

60mm

Turn base of

arbor press

1R286 Round

bar for arbor

Spindle

Helical gear 39

Ball bearing 6000DDW

Ball bearing

6000DDW

( 4 ) Put the removed gear section on the turn base of arbor press. And put No.1R286 "Round bar for arbor" on

the spindle. See Fig. 5. And press the round bar for arbor with arbor press. See Fig. 6.

( 5 ) The helical gear 39 and ball bearing 6000DDW can be removed from spindle in the order of Fig. 7, 8 and 9.

Fig. 5 Fig. 6

Fig. 7

Fig. 8

Fig. 9

Spindle

Plate for

bearing extracting

Pipe ring

Fig. 15

No.1R316

Adjustable Bearing

Retainer Wrench

Bearing box

Bearing retainer

Engage these pins with the groove

of bearing retainer for removing or

mounting.

Spindle

Round bar

for arbor

Ring 22

Repair P 4 / 9

Bearing

retainer 23-36

Bearing box

No.1R316

Adjustable bearing

retainer wrench

( 6 ) Remove bearing retainer 23-36 with No. 1R316 "Adjustable bearing retainer wrench". See Fig. 10.

( 1 ) Mount ball bearing 6202DDW in bearing box. See Fig. 12

( 2 ) Mount bearing retainer 23-36 by turning it with adjustable bearing retainer wrench clockwise. See Fig. 13.

( 7 ) Remove ball bearing 6202DDW from bearing retrainer 23-36 by pressing it as illustrated in Fig. 11.

< 3 > Assembling gear section

Fig. 11

Fig. 12 Fig. 13

Fig. 10

For removing bearing retainer 23-36,

turn the Adjustable bearing retainer wrench

counter clockwise.

60mm

Ball bearing 6202DDW

No.1R316

Adjustable bearing

retainer wrench

Bearing retainer

23-36

Ball bearing

6202DD

Bearing

retainer 23-36

60mm

Repair P 5 / 9

( 3 ) Mount spindle by pressing with arbor press. See Fig. 14.

( 4 ) Mount helical gear 39 by pressing with arbor press. See Fig. 15.

( 5 ) Mount ball bearing 6000DDW. See Fig. 16. The gear section has been completed in this step.

( 6 ) Mount the gear section to blade case. See Fig. 17.

Fig. 14 Fig. 15

Fig. 16 Fig. 17

Spindle

Round bar

for arbor

Helical gear 39

Ball bearing

6000DDW

Gear section

Counter sunk

head screw M6x20

Repair P 6 / 9

( 7 ) Mount safety cover. Connect tension spring 5 with blade case and safety cover. Secure safety cover with

retaining ring S-45. See Fig. 18.

( 1 ) Unscrew 5 pcs. of tapping screw 4x18. Remove handle cover from motor housing. Now the electrical parts can

be replaced. See Fig. 19. When mounting the electrical parts, put them as illustrated in Fig. 20.

Fig. 18

Fig. 18R

Fig. 18F

Tension

spring 5

Tension

spring 5

Safety cover

Retaining

ring S-45

Blade case

Hitch blade case with the hook

of taper formed side.

Hitch safety cover with the hook

as illustrated in Fig. 18R.

Tension

spring 5

Safety cover

< 4 > Replacing electrical parts in handle

Fig. 19

Tapping

screw 4x18

(5 pcs.)

Handle

cover

Lock ON button

Switch

(Lock OFF button)

Compression spring 5

Repair P 7 / 9

( 1 ) Separate blade case section, after removing brush holder cap and carbon brush.

And remove handle cover. See Fig. 20.

The distance between blade case and handle is too small to approach strain relief with screwdriver.

Power supply cord can be replaced as illustrated below.

However, if the screwdriver as illustrated in Fig. A, is used, the power supply cord can be removed

without separating the blade case section.

( 2 ) Remove strain relief by unscrewing 2 pcs. of tapping screw 4x18. See Fig. 21.

( 3 ) Remove power supply cord. See Fig. 22.

Lock ON button

Switch

Strain

relief

Tapping screw 4x18

(2 pcs.)

(Lock OFF button)

< 5 > Replacing power supply cord

Fig. 20

Fig. 21 Fig. 22

Pan head

screw M5x50 (4 pcs.) Tapping

screw 4x18

(5 pcs.)

Carbon brush Handle cover

Power supply

cord

Cord guard

smaller than 50mm

Fig. A

Repair P 8 / 9

< 6 > Separating base from motor section

( 2 ) Take off ring spring 12 from lever 54. Remove lever 54 together with hex nut M8 from cap square neck

bolt M8x90. See Fig. 23 and Fig. 24.

( 1 ) Remove safety cover as illustrated in Fig. 2 and Fig. 3 in page 2/9 before the step in Fig. 23.

( 3 ) Take off cap square neck bolt M8x90 from blade case. The rear side of motor section has been disconnected

from base in this step. See Fig. 24.

( 4 ) Unscrew hex nut M6-10 and remove

pan head screw M6. See Fig. 25.

The motor section has been disconnected

from base completely. See Fig. 26.

Fig. 24

Fig. 23

Fig. 26Fig. 25 Hex nut M6-10

Pan head screw M6

< Note >

Be careful, not to lose flat washer 8 which is

mounted between pipe 9 and depth guide of

base, when removing cap square neck bolt M8x90.

Pipe 9

Base

Ring spring 12

Lever 54

Lever 54Hex nut M8 Cap square

neck bolt M8x90

Flat washer 8

Lead wire from field has to be

passed without slacking

in this area.

Lead wire from field has to be

held with lead holder

Circuit diagram

Wiring diagram

P 9 / 9

Color index of lead wires' sheath

Black

524

Switch

Noise suppressor

Power supply cord

Field

(Noise suppressor is not used in some countries.)

Field

Switch * Noise suppressor

* Noise suppressor is not used

in some countries.

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