YSM40R_Mainte_E - 第150页

3-80 3 Periodic maintenance items 7.2.3 Detaching the par ts subject to wear n Detaching head cover and cylinder (for replacing O-ring in connecting pipe) 1 Detach the panel. Use a Phillips screwdriver to remove the scre…

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3-79
3
Periodic maintenance items
5
Detach the lower pump.
1. Use a hex wrench (4) to remove 2 bolts
(front side) that mount the lower pump.
2. Detach the lower pump, and also
disconnect the power connector and
ground wire from the side housing.
3. Pull out the upper pump to the front side.
533A4-N9-00
Step 4, 5
Detaching the pump
Mounting bolts
(4 places)
3-80
3
Periodic maintenance items
7.2.3 Detaching the parts subject to wear
n
Detaching head cover and cylinder (for replacing O-ring in connecting pipe)
1
Detach the panel.
Use a Phillips screwdriver to remove the
screws that mount the panel.
533A5-N9-00
2
Place the pump upright.
Place the pump in an upright position so
that the head whose parts are to be
replaced is at the top.
533A6-N9-00
3
Remove the mounting bolts.
Use a hex wrench to remove 4 bolts (M6×L30)
each mounting the left and right head
covers (remove a total of 8 bolts).
4
Detach the head covers.
Detach the head covers along with the
connecting pipe.
533A7-N9-00
Step 1
Detaching the panel
Panel
Step 2
Placing the pump upright
Head whose parts are to be replaced
Step 3, 4
Detaching head cover
Hex wrench Head cover Mounting bolt
3-81
3
Periodic maintenance items
5
Replace the O-rings.
1. Detach the connecting pipe from the
head covers.
2. Replace the O-rings (4 pieces) on the
connecting pipe with new ones. At this
point, apply grease (NSL) to the entire
surface of each new O-ring.
533A8-N9-00
6
Put a mark.
Before detaching the cylinder, put a mark
on the casing and cylinder with an oil-based
marker pen to indicate the reassembly
position.
533A9-N9-00
c
CAUTION
The pump will break down if the cylinder is reassembled
in the wrong direction, so always put a mark to indicate
the reassembly position.
7
Raise the cylinder.
Turning the fan raises the cylinder. Wear
gloves and slowly turn the fan to raise the
cylinder.
c
CAUTION
The inside of the pump might be hot. Always wear
gloves before touching the fan and cylinder.
8
Detach the cylinder.
c
CAUTION
Do not drop the spacer located on the inner periphery
of the cylinder installation surface.
533B1-N9-00
Step 5
Replacing the O-ring
Connecting pipe
Head cover
O-ring
Step 6
Marking
Oil-based marker pen
Step 7, 8
Detaching the cylinder
Cylinder
Fan