YG12_英文保养手册.pdf - 第71页
3-21 3 Periodic maintenance items 0 Blow air into the spline air path. 1. Prepare an air blow gun (available as option) and connect it to an air connector on a nearby machine. Then insert the air blow gun nozzle into the…
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3
Periodic maintenance items
7
Remove the spring suspending the
spline shaft.
Unhook the spring from the hook pin by
hand.
53320-L5-00
8
Remove the cap bolt for spline
shaft cleaning.
Use the precision wrench (supplied) to
remove the cap bolt (hex head bolt).
53321-L5-00
c
not to drop it.
9
Clean the inside of the spline shaft.
1. Insert the nozzle of the cleaning kit into
the cleaning hole of the spline shaft.
2. Pour alcohol (IPA) into the spline shaft air
path to clean away dust and grime.
53322-L5-00
Unhooking the spring
Step 7
Spring hook pin
Spring
Spline shaft
Removing the cap bolt
Step 8
Precision wrench (supplied)
Cap bolt
Upper block of spline shaft
Cleaning the spline shaft
Step 9
Nozzle of cleaning kit
Spline shaft Pump of cleaning kit
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Periodic maintenance items
0
Blow air into the spline air path.
1. Prepare an air blow gun (available as
option) and connect it to an air
connector on a nearby machine. Then
insert the air blow gun nozzle into the air
joint of the spline shaft.
2. Place a shop cloth under the lower end
of the spline shaft, and blow air through
the spline shaft while blocking the
cleaning hole with your finger.
3. Repeat the above procedure (steps 9
and 10) until the IPA flowing out from the
spline shaft becomes clean. Make sure
that after blowing air, smear no longer
appears on the shop cloth placed under
the lower end of the spline shaft, and
then reattach the cap bolt.
53334-L5-00
c
The exhaust air blow might strike your face, so be sure
to wear safety goggles.
c
not to drop it.
If the packing is damaged, replace it with a new one.
q
Reattach the spring to suspend the
spline shaft.
Hook the spring to the hook pin by hand.
n
NOTE
Clean the inside of all spline shafts using the same
procedure in steps 7 to 11.
w
Reinstall the ejector unit stay back
to its original position.
Tighten the four bolts to secure the ejector
unit stay, using the hex wrench or T-handle
hex.
e
Reconnect the air hoses back to
their original positions.
Air blow into spline shaft
Step 10
Nozzle of air blow gun
Air blow switchBlock the cleaning hole with your finger.
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Periodic maintenance items
3.2.2 Checking the negative pressure
After cleaning the spline shafts, check the negative pressure (vacuum level) generated in each head.
1
After assembly, check the vacuum
levels.
1. Leave nozzles detached from the heads.
2. Openthe[Unit]-[Head]tabscreenand
press the [Vacuum] button to generate a
negative pressure. Read the "Max" values
shown on the screen and determine
whether the vacuum levels are
appropriate by referring to the criteria
below.
54311-L5-00
2
Reattach the nozzles.
Attach the nozzles by hand back to the
heads.
n
Vacuum level criteria in spline air path
When nozzle is open : 70 or less
When nozzle is sealed : 190 or more
n
NOTE
The vacuum level in the spline shaft air path might sometimes differ slightly depending on the air source and operating
conditions.Usetheabovecriteriaforreferenceduringmaintenance.
Checking the vacuum level
Step 1
[Vacuum] buttonRead "Max" values.