M8_ServiceManual_e.pdf - 第51页
3 Mechanical Section 3-11 ● Cleaning the nozzle holder A roller and leaf spring that hold the nozzle may not perform smoot hly due to the entry of dust and di rt, which will cause a nozzle-dropping. Make a periodi c chec…
3 Mechanical Section
3-10
Nozzle Holder
● Checking the nozzle holder escape
After grease is applied to the nozzle’s outer surface, attach the nozzle to the head and check the condition of
the nozzle holder 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 holder 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 holder escape.
③ Release fingers gently and check that the nozzle returns to the lower dead center smoothly.
NOTE: If the nozzle holder escape is not smooth, there may be problems with component suction and placement. 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.
● Inspection interval
Approx. once a week
3 Mechanical Section
3-11
● Cleaning the nozzle holder
A roller and leaf 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 roller and leaf spring inside the nozzle holder carefully, since they tend to get lost. It is
recommended that spare parts should be kept handy and start removal.
roller
leaf spring
pan-head screw
pan-head screw
Side View
Front View
ACTION:
① Unscrew the two screws with a Phillips screwdriver to take the roller and leaf spring off.
② Remove dust and dirt around the area where the roller touches, the roller and leaf spring.
Check to see that there is no flaw in them. ( replace the part with a new one if there is a flaw)
③ Apply the proper amount of Silicone Grease to the roller and the area where it touches.
Put them back in reverse order of removal.
● Inspection interval
When unusual condition is seen by an inspection, or once/twice a month.
Part Name
Part No. Remark
SCREW,BIND.HEAD LC1-M71GN-30X Pan-head screw
PIN,PARALLEL LC6-M71AY-00X Parallel pin
LEAF,SPRING 1 LC6-M714R-00X
LEAF,SPRING 2 LC6-M714S-00X
LEAF,SPRING 3 LC6-M714T-00X
LEAF,SPRING 4 LC6-M714U-00X
NOTE: A life of a leaf spring is approximately five hundred thousand nozzle changes. It should be replaced
periodically.
3 Mechanical Section
3-12
O-ring
If the O-ring inside the nozzle deteriorates and develops cracks, air leakage will occur. This will reduce the
maximum air pressure (negative pressure), causing problems with suction operation. If the reduction in the
maximum air pressure is found and the cause seems to be in the nozzle, replace the O-ring inside the nozzle.
ACTION:
① Pull out the O-ring from the nozzle and clean inside the nozzle with an air blower.
② Insert a new O-ring into the nozzle from its rear end.
③ Push the O-ring against the bottom inside the nozzle.
④ After the new O-ring has been set in place, attach the nozzle to the head and check for nozzle
clogging.
)
Checking the nozzle for clogging
NOTE: Do not apply silicon grease or the like to the O-ring since it may cause nozzle clogging.
■ Nozzle Filter
The nozzle filter prevents dust from getting inside the nozzle. It also prevents the escape action malfunction
caused by the dust. Periodical cleaning of the nozzle filter must be performed.
ACTION:
① Clean the nozzle with an air blower from its rear end.
NOTE: Normally, cleaning with the air blow may be enough. But when the dirt is firmly fixed, remove the O-ring
and the filter to clean.
NOTE: Nozzles with filter:
P005, P006, P013, P018, P019, P020 and Custom-made nozzles.
Dust and dirt are easily taken in to a nozzle hole with a big-diameter. (1.0mm or more)
Part Name
Part No. Remark
O RING LC1-M77A5-90X
FILTER, NOZZELE 15 LC6-M771Y-00X
REMOVER,O-RING LC1-M861R-01X O-ring removal jig
PIN(O RING) LC1-M8911-10X For inserting O-ring