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FX-3R Maintenance Guide 9-9 <Detaching the support plate, cup packing, and suction valve interference prevention rubber> 1) Put a mark on the support plate with an oil felt pen so that it meets the mark on the casi…

FX-3R Maintenance Guide

9-8

1) Loosen four hexagon socket head cap bolts (M6 × L30)

fixing the head cover with an Allen wrench, and then

remove the hexagon socket head cap bolts.

Figure 9-4-5 Removing the Head

Cover Set Screws

2) Detach the head cover.

Head cover

Figure 9-4-6 Detaching the Head

Cover

1) Before detaching the cylinder, put a mark on the casing

and cylinder with an oil felt pen.

Figure 9-4-7 Putting a Mark

2) Wear gloves and gradually turn the fan upward.

(At this time, always wear gloves.)

Rev. 1.00

Figure 9-4-8 Turning the Fan

3) Pull out the cylinder upward.

Cylinder

Figure 9-4-9 Pulling Out the

Cylinder

FX-3R Maintenance Guide

9-9

1) Put a mark on the support plate with an oil felt pen so

that it meets the mark on the casing.

Figure 9-4-10 Putting a Mark

2) Loosen four countersunk head screws of the support plate.

Figure 9-4-11 Removing the

Countersunk

Head Screws

3) Detach the support plate and cup packing.

Support plate Cup packing

Figure 9-4-12 Detaching the

Support Plate

Figure 9-4-13 Detaching the

Cup Packing

Rev. 1.00

FX-3R Maintenance Guide

9-10

1) Loosen the round head screws (M3 × L5) fixing the

exhaust valve support plate.

2) Detach the exhaust valve support plate, exhaust valve

backup, and exhaust valve.

Figure 9-4-14 Removing the Round

Head Screws

3) Loosen the round head screws (M3 × L5) fixing the

suction valve support plate.

4) Detach the suction valve support plate, exhaust valve

backup, and suction valve.

Figure 9-4-15 Removing the Round

Head Screws

5) Remove the gasket from the head cover and wash the

head cover. After the washing has been completed,

blow the air to the head cover and replace the gasket

with a new one.

Gasket

Figure 9-4-16 Gasket

6) Wipe off the washing solution with a cloth rag and degrease the entire cylinder completely.

Suction

valve

∗

Exhaust

valve

∗

Exhaust valve backupSuction valve backup

Suction valve interference

prevention rubber

Cup packing

Figure 9-4-17 Cylinder Figure 9-4-18 Support Plate and Cup Packing

∗ The same part is used for both the suction valve and the exhaust valve.

7) Replace each consumable part with a new one. Reassemble the parts and components in the

reverse order of disassembly so that they meet the markings. At this time, tighten the M6 bolts

fixing the head cover with a tightening torque of 8N⋅m.

Rev. 1.00