YAMADA G25, Руководство по обслуживанию, Страница: 9 / 12

6
6. Guide Bush
6.1 Removal
▪ Remove the diaphragm and center rod etc. (see “5.1
Removal”).
▪ Remove 8 mounting bolts from the air chamber and remove
the air chamber and the gasket. [Fig.6.1]
▪ Draw out the guide bush A, B, C. [Fig.6.1]
6.2 Inspection
▪ Guide bush [Fig.6.2]
Measure the inside diameter, and if it is outside the usable
range, replace the guide bush.
Usable range of guide bush
Guide bush A, C
φ
18.4 -
φ
18.7 mm
Guide bush B
φ
18.3 -
φ
18.6 mm
▪ O ring
If the O ring is worn out or cracked, replace it.
6.3 Installation
For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.
Tightening torque for air chamber retainer bolts
18 N•m
<NOTE>
▪ Make sure there is no dust on the seal surface and the seal
is not damaged.
▪ Apply grease to O ring.
▪ Fill the inside diameter groove of the guide bush B with
grease.
Fig.6.1
＜ Guide bush
A
＞
＜ Guide bush
B
＞
＜ Guide bush
C
＞
Fig.6.2