YG200_YG200L_Mainte_E - 第45页

3-5 3 Periodic maintenance items 1 . 2 . 2 C l e a n i n g t h e F N C n o z z l e a s s e m b l y 1 D i s a s s e m b l e t h e F N C n o z z l e a s s e m b l y . U s e t h e P h i l l i p s s c r e w d r i v e r ( N o…

3-4

Periodic maintenance items

Remove the FNC nozzle assembly.

While gripping the nozzle assembly, pull out

the FNC nozzle shaft horizontally along with

the bevel gear and remove the nozzle

assembly by pulling it down.

53308-F8-00

CAUTION

Do not mix up the nozzle assemblies, bevel gears and

shafts of the different heads. Keep them as the original

set for each FNC head.

Reference

When using an ultrasonic cleaner recommended by

YAMAHA:

• Attach a urethane tube to the nozzles for chip

components to protect their tip (see drawing).

• Put the nozzles in a container according to each

head and perform ultrasonic cleaning for 10 minutes

or less.

• After cleaning, blow sufﬁcient amounts of air onto the

nozzles and then apply turbine oil (VG32) to the

spring-action parts.

• Wipe away excess oil carefully with lint-free cleaning

cloth or wipes.

53324-F8-00

Step 5

Removing the FNC nozzle assembly

Removed nozzle assembly

Bevel gear

Cleaning container

Alcohol

Slatted board

Water

Urethane tube used during ultrasonic cleaning

Urethane tube

Cut

Type A nozzle

Type F nozzle

Ultrasonic cleaner

Reference

Nozzle chip should

not come out.

3-5

Periodic maintenance items

1.2.2 Cleaning the FNC nozzle assembly

Disassemble the FNC nozzle

assembly.

Use the Phillips screwdriver (No.0 or No.00) to

remove the nozzle mounting screws, and

remove the nozzles and springs from the FNC

nozzle assembly.

53309-F8-00

CAUTION

The screwdriver bit size may slightly differ between

manufacturers. Use the screwdriver that matches the

recessed pattern on the screw head.

Take care not to lose the small spring inserted in the

spring-action nozzle.

Clean the parts with alcohol.

Immerse the nozzles, springs, nozzle brackets,

nozzle block, bevel gear and shaft and

standard nozzles in alcohol. Leave these

parts immersed in alcohol for about 3 to 5

minutes. In the meantime, clean the nozzle

shaft hole as explained in step 3.

CAUTION

Do not put the O-ring of the nozzle into alcohol. The

O-ring may stretch and become unusable when

immersed in alcohol.

Clean the nozzle shaft hole of the

FNC assembly.

While the parts are immersed in alcohol in

step 2, clean the index holder nozzle shaft

hole of the FNC heads as follows.

1. Clean the nozzle shaft hole with a cotton

swab moistened with alcohol and blow

air with an air blow gun (KU4-M8590-00X).

2. Brush the bevel gear of the index holder

with a toothbrush moistened with alcohol

and blow air with the air blow gun

(KU4-8590-00X).

53310-F8-00

53311-F8-00

CAUTION

Use lint-free cotton swabs that do not leave residue.

Disassembled FNC parts

Step 1

Nozzle bracket

Nozzle block

Spring

Nozzle tip

Type 201F Type 201F

Type 202F Type 202F

Type 203F Type 203F

Step 3-1

Cleaning the index holder nozzle shaft hole

Index holder

Cotton swab moistened with alcohol

Step 3-2

Cleaning the index holder nozzle shaft hole

Clean the bevel gear using a brush

moistened with alcohol.

3-6

Periodic maintenance items

Blow air into the spline shaft.

For YG200:

While blocking the exhaust aperture on the

ejector valve with your finger, press the

[Blow] button for each head on the [Unit]-

[Head] tab screen. The inside of the spline

shaft is then blown with air.

53312F8-00

For YG200L:

On the [Unit]-[I/O] tab screen, select the

address of the exhaust stop valve for each

table and press the [ON/OFF] button to

block the exhaust apertures of all heads for

each table. The inside of each spline shaft is

then blown with air.

The exhaust stop valve address for each

table is as follows:

A-table T00023

B-table T08023

C-table T080A3

D-table T000A3

54300-F4-00

Take the parts out of the alcohol

container and clean them.

1. Clean the hole of the nozzle block by

passing the cleaning wire through it.

2. Clean the bevel gear, hole and surface

with a cleaning cloth, toothbrush and

cotton swab.

53313-F8-00

53314-F8-00

Air blow into spline shaft (YG200)

Step 4

Place finger over the exhaust hole of ejector valve.

[Blow] button

[Unit]-[I/O] tab screen (YG200L)

Step 4

Select the address.

Cleaning the nozzle block

Step 5-1

Nozzle block

Cleaning wire

Cleaning the bevel gear

Step 5-2

Bevel gear

Clean the bevel bear hole

with cotton swab