M4serviceManual_e - 第44页

3 Mechanical Section 3-14 ■ Applying Silicon Grease After the nozzle is cleaned, it must be coated with silicon grease. Apply silicon grease. Nozzle ID sticker Suction pad ● Nozzle outer surface Apply a slight amount of …

3 Mechanical Section

3-13

■ Inspection of Suction Pad (Nozzle No. M017, M018, M019, M020)

Check that the rubber suction pad located at the nozzle tip is free of scratches and cracks. If they are found

on the pad, replace the pad with a new one.

ACTION: Remove the old pad, apply silicon grease to the inner surface of a new pad, and then install it in the nozzle.

NOTE: M020 has a different nozzle structure from those of M017 to M019. Thus, in the case of M020, remove the

pad stopper from the nozzle tip first and then remove the suction pad. After a new pad is installed, make

sure that the pad stopper is re-installed properly.

Suction pad

Pad stopper

(Can be removed by turning it counter-clockwise using a

flat-blade driver screw)

Nozzle M020

Part Name

Part No. Remark

RUBB.PAD17 LG0-M77A0-00X Suction pad for M 017

RUBB.PAD18 LG0-M77A1-00X Suction pad for M 018

RUBB.PAD19 LG0-M77A2-00X Suction pad for M 019

RUBB.PAD20 LG0-M77A9-00X Suction pad for M 020

PAD STOPPER M020 LG0-M770U-000 Pad stopper for N 020/ M 020

GREASE SILICON LG0-M89AB-00X Silicone Grease

3 Mechanical Section

3-14

■ Applying Silicon Grease

After the nozzle is cleaned, it must be coated with silicon grease.

Apply silicon grease.

Nozzle ID sticker

Suction pad

● Nozzle outer surface

Apply a slight amount of grease to the outer surface (indicated by dotted lines in the above illustration), and

then wipe it off with a dry cloth.

NOTE: Silicon grease must be applied so that it forms a thin film on top of the surface.

● Suction pad

Application of oil content is needed to prevent deterioration of the rubber. Apply a slight amount of grease

to the outer surface of the suction pad, and then wipe it off with a dry cloth.

NOTE: Silicon grease must be applied so that it forms a thin film on top of the surface.

Do not apply excessive amounts of grease. This may cause collection of dirt

or dust in the air passage and on mounted components, resulting in

component mount failure.

● Checking the nozzle escape

After grease is applied to the nozzle’s outer surface, attach the nozzle to the head and check the condition of

the nozzle escape.

NOTE: When the nozzle is placed in the head (nozzle holder), it can slide a few millimeters vertically. This nozzle

sliding movement is called nozzle escape.

ACTION:

① Attach the nozzle to the head.

② Push the nozzle gently with fingers up to the top dead center of the nozzle escape.

③ Release fingers gently and check that the nozzle returns to the lower dead center smoothly.

NOTE: If the nozzle escape is not smooth, there may be problems with component suction and mounting. If the

nozzle gets caught or does not move smoothly, check the nozzle holder and nozzle’s inner/outer surfaces

for collection of foreign matter or scratches.

3 Mechanical Section

3-15

Nozzle holder

A ball and spring that hold the nozzle may not perform smoothly due to the entry of dust and dirt, which

will cause a nozzle-dropping. Make a periodic check of the nozzle escape. If any *abnormal conditions are

seen, clean the nozzle holder. (*The nozzle stays up and does not go back to its initial position, or the nozzle

drops easily etc.)

NOTE: Please handle the spring and ball inside the nozzle holder carefully, since they tend to get lost. It is

recommended that spare parts should be kept handy and start removal.

Spring holder

Nozzle holding parts

ACTION:

① Remove the spring holder with a flat blade screw.

NOTE: Adhesive has been applied around the screw head to prevent loosening. When removing the spring holder

for the first time, take off the adhesive and start removal.

② Take the spring and ball out.

(When it is difficult to take the ball out, push it from inside of the nozzle holder.)

③ Remove the spring from the spring holder with tweezers.

④ Remove dust and dirt around the hole area, the spring and ball.

⑤ Apply the proper amount of Silicone Grease to the spring and ball.

Put them back in reverse order of removal. Fasten the spring holder until it touches the inner wall.

Part Name

Part No. Remark

HOLDER,SPRING LG0-M714P-00X Spring holder

SPRING,COMP. LG0-M71CC-00X Spring

STEEL,BALL LG0-M71B5-00X Ball