Makita XBU02 Instrucciones de funcionamiento

REPAIR MANUAL

XBU02

Repair

CAUTION: Repair the machine in accordance with "Instruction manual" or "Safety instructions".

[1] NECESSARY REPAIRING TOOLS

[2] LUBRICATION

Code No. Description Use for

1R028 Bearing setting pipe 20-12.2 press-tting Motor housing cover to Rotor

1R032 Bearing setting plate 8.2 holding Rotor when press tting Motor housing cover

1R045 Gear extractor (large) removing Fan 110, Rotor

1R247 Round bar for arbor 20-100 press-tting Rotor and Motor housing cover

1R269 Bearing extractor removing Ball bearing 626DDW, 698LLU from Rotor

No need to lubricate.

Repair

[3] DISASSEMBLY/ASSEEMBLY

(1) Remove Front nozzle, Rear cover and Housing set R. (Fig. 1)

Fig. 1

4x18 Tapping screw

1. Remove four 4x18 Tapping

screws and separate Rear cover.

2. Remove Rear cover by prying it off

with a slotted screwdriver.

[3] -1. Fan 110, Rotor

DISASSEMBLING

Rear cover

3. Remove twelve 4x18 Tapping screws.

5. Remove two 4x18 Tapping screws. 6. Remove Front nozzle.

4. Separate Housing set R.

Housing set R.

Front nozzle

P 2/ 13

P 3/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

(2) Separate Motor housing from Housing set L. (Fig. 2)

(3) Remove M5 Coned disc spring hex nut from the rotor shaft and remove Fan 110. (Fig. 3)

Fig. 2

Fig. 3

While paying attention not to loosen Switch section in Handle portion,

separate Motor housing section from Housing set L.

2. Lock Fan 110 with the grip of plastic hammer,

and then remove M5 Coned disc spring hex nut

from the rotor shaft by turning it counterclockwise

with the impact driver.

4. Fan 110 can be

removed using 1R045,

if it is difcult to

remove by hand.

[3] -1. Fan 110, Rotor (cont.)

DISASSEMBLING

Switch section

Motor housingHousing set L

Fan 110 is removed from

this side in the next step.

Fan 110 Flat washer 5

Socket bit 8-55

55 mm

8 mm

Grip of plastic

hammer

M5 Coned disc

spring hex nut

1. Attach Socket bit 8-55 to an impact driver

to remove M5 Coned disc spring hex nut.

Fan 110

3. Remove Fan

110 by hand.

Note: Make sure not to

lose Flat washer 5.

1R045

M5 Coned disc spring hex nut

P 4/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

(4) Remove Rotor from Motor housing. (Fig. 4)

(5) Remove Motor housing cover and Ball bearings from Rotor. (Fig. 5)

Fig. 4

Fig. 5

[3] -1. Fan 110, Rotor (cont.)

DISASSEMBLING

Flat washer 8

Rotor shaft

Rotor

Motor housing

Cap

Motor housing cover

1. Remove Flat washer 8 from the rotor shaft.

1. Remove Rotor from Motor housing cover with 1R045. 2. Remove Ball bearings from Rotor using 1R269.

Motor housing

2. Loosen four 3x20 Tapping screws, and

disassemble Cap from Motor housing

so that Rotor can be removed from the

cap side.

3. Tap the rotor shaft

with a plastic hammer.

4. Remove Rotor and Motor housing cover

from Motor housing.

Plastic hammer Motor housing

Rotor

Motor housing cover 1R045

Rotor

Ball bearing 626DDW

1R269

Rotor

Motor housing

cover

Ball bearing

698LLU

Ball bearing

698LLU

Ball bearing

626DDW

P 5/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

When handling or storing multiple Rotors, be sure to keep a proper distance between Rotors as shown in Fig. 6　

because Rotor has a strong magnetic force.

Failure to follow this instruction could result in:

• Finger injury caused by pinching between Rotors

• Magnetic loss of Rotors or damage on the magnet portion of Rotor (Fig. 7)

Fig. 6 Fig. 7

[3] -1. Fan 110, Rotor (cont.)

Caution for Handling of Rotor

* Magnetic loss of Rotors

* Damage on the magnet portion of Rotor

(1) Assemble Ball bearings 626DDW/ 698LLU to Rotor. (Fig. 5)

(2) Assemble Motor housing cover to Rotor. And assemble them to Motor housing. (Fig. 8)

ASSEMBLING

Fig. 8

Rotor

Stator

1R032

1R028

Motor housing

1. Set Rotor onto 1R032.

Put Motor housing cover onto Rotor.

Press-t Motor housing cover using 1R028

and Arbor press.

Motor housing cover

and Rotor

Motor housing

Motor housing cover

2. Assemble Rotor and Motor housing cover

to Motor housing.

Note: Take care that your ngers are not pinched between

Motor housing cover and Motor housing.

1R247

3. Press-t Motor housing cover and Rotor to Motor

housing using 1R247 and Arbor press.

P 6/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

(3) Assemble Fan 110 to the rotor shaft. (Fig. 9)

Fig. 9

[3] -1. Fan 110, Rotor (cont.)

ASSEMBLING

Motor housing

Cap

Flat washer 8

Rotor

1. Fix Cap to Motor housing with four 3x20

Tapping screws.

2. Assemble Fan 110 to the rotor shaft while

aligning their ats on Fan110 and the rotor shaft.

3. Using an awl or a small screwdriver as a guide

rail, assemble Flat washer 5 to the rotor shaft.

2. Assemble Flat washer 8 to

the rotor shaft.

Socket bit 8-55

Rubber ring 8

Housing set L

4. Lock Fan 110 with the grip

of plastic hammer.

5. Attach M5 Coned disc spring

hex nut to Socket bit 8-55, and

tighten M5 Coned disc spring

hex nut by turning it clockwise.

6. Rubber ring 8 must be mounted to

Motor housing as shown in the gure

on the left. Otherwise, Motor housing

can not be properly mounted to

Housing set L.

Fan 110

Flat Rotor shaft

Awl or small

screwdriver Flat washer 5

M5 Coned disc spring hex nut

P 7/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

ASSEMBLING

Assemble Lock ON button. (Fig. 10)

Fig. 10

[3] -2. Fan Lock ON button

Cut portion

of boss

Compression spring 5

Compression

spring 5

Lock ON button Lock ON button

Lock ON

button

1. Join Lock ON buttons and Compression spring 5

together while aligning their protrusions on Lock

ON buttons in the same direction.

If not, Housing set R may not be xed properly.

2. Assemble Lock ON button to Housing set L

while tting one protrusion to the cut

portion of boss.

Protrusions

Housing set L

3. If the Lock ON button protrudes from the

mounted Housing set R , Lock ON button is

assembled properly.

Note:

If Lock ON button does not protrude from

Housing set R, align their protrusions on

Lock ON buttons in the same direction.

P 8/ 13

Repair

[3] DISASSEMBLY/ASSEEMBLY

Disassemble Sub controller. (Fig. 11)

Fig. 11

[3] -3. Sub Controller

DISASSEMBLING

Dial 28

Sub controller

Connector

Axis for Dial 28

Lead wires of

Sub controller

1. Remove Dial 28. 2. Disconnect the connector.

3. Remove Sub controller by prying it off

with a slotted screwdriver.

Slotted screwdriver

Note:

When removing Sub controller, be sure

not to grip or pick up the axis for Dial

28 or Lead wires of Sub controller.

P 9/ 13

Repair

[4] TROUBLESHOOTING

Whenever you nd any trouble in your machine, refer to this chapter rst.

Trouble on Controller can be checked with Tester as follows.

(1) Use a full charged battery which has the star mark. (Fig. T-1)

(2) When Housing is disassembled, check the conditions of the electrical parts

(Connectors, Lead wires, Switches, etc.), Rotor, Stator, Gear section, etc.

(3) Do a running test 10 times.

Black test probe

Red test probe

(-) pole (+) pole

Lock ON

button

Switch lever

１.１

Note in Repairing

Star mark

Fig. T -1

Fig. T -2

Test for recognizing the trouble on FET (Field effect transistor) of Controller

2. After removing the battery from the machine,

lock Switch lever to ON position by pushing

Lock ON button.

1. Set Digital tester (1R402) in the diode mode

( mark on the tester).

3. Connect Black test probe to the plus pole,

Red test probe to minus pole of Terminal.

And, check the value display on the tester.

Note: Be careful not to connect the probes in reverse.

4. Wait until the reading is stable.

If it reads within 0.9V - 1.3V,

there is no fault on FET of Controller.

If it reads 0V or 0.4V approx., Controller is

broken. Replace it with a new one.

P 10/ 13

Repair

[4] TROUBLESHOOTING

Check the items from top of the following list. (Description of the item is referred to Circuit diagram in Fig. D-1.)

After corrective action, return to the start of Trouble shooting and check again.

Symptom Cause Corrective action

Check List for Troubleshooting

Motor runs when the machine

is switched on.

(Check by repeating 10 times.)

In case of running inconstantly,

go to “No”.

Yes

Does it read 0.9V ~ 1.3V on the tester?

When a tester cannot be prepared, go to “Yes”.

If your problem cannot be solved although

its corrective action has been carried out.

Connectors are in incomplete

connection.

Connectors are in incomplete

connection.

The machine does

not have any trouble.

Check Lead wires,

or replace them.

Check Terminal,

or replace it.

Check Lead wires,

or replace them.

Battery fuel gauge

lights on.

Rotor is rubbed to

Stator.

Lead wires are broken.

Switch is broken.

Controller is broken.

Stator is broken.

Replace Controller.

Replace Stator.

Replace Rotor.

Replace Sub controller.

Connect them rmly.

Replace Switch.

Connect them rmly.

Replace Controller.Controller is broken.

Controller is broken. Replace Controller.

Replace Controller.

Terminal is broken.

Rotor is broken.

Switch is broken.

Controller is broken.

Sub controller is broken.

Lead wires are broken.

Replace Switch.

Replace Controller.

Variable control

can be functioned

by trigger.

Air volume/speed

selection can be

functioned by dial.

3 lamps on each

battery fuel gauge

light on.

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