Precaution For Reassembly - Yoshitake GD-28S-NE Product Manual

(5) Secure the part A of the spindle [4] (two faces), loosen the U-nut [29] with a tool, and remove the disc
[8], and O-ring [28].

6.4 Precaution for reassembly

1. Check that there are no foreign substances inside the body and on each part.
*Foreign substances prevent the product from functioning properly. To avoid the problem, remove
foreign substances.
2. Check that there is no damage or scratch on the disc or O-ring.
* Damage or scratch on the relevant part prevents the product from functioning properly. Replace the
damaged part.
3. Apply silicone grease (harmless to humans) to the O-ring.
*Failure to follow this notice may damage the O-ring.
Assemble the parts in reverse order of disassembly.
Tighten the bolts [18] of the spring chamber [2] evenly in the diagonal order.
* Bolt [18] of Spring chamber [2]
* Nut [22] of Diaphragm [9]
* Set screws [25] (bolts [25] in the case of nominal size 65A to 100A) of the valve seat [3]
Tightening torque
* U-nut [29] of spindle [4]
*Strainer cap [11]
Tightening torque
Size
20 - 50A
65 ‐ 100A
Tightening torque
Size
20 - 25A
32 - 50A
65 - 80A
100A
Size
20 - 50A
65 - 100A
Tightening torque （※Replace the U-nut.）
Size
20 - 25A
32 - 40A
50A
65 - 80A
100A
Tightening torque
Size
20 - 25A
32 - 50A
Part A
Washer of disc
O-ring
Disc cover
Disc
U-nut
Caution
Torque
10N・m
30N・m
Torque
8N・ｍ
12N・ｍ
18N・ｍ
23N・ｍ
Torque
15N・ｍ
30N・ｍ
Torque
8N・ｍ
12N・ｍ
13N・ｍ
18N・ｍ
23N・ｍ
Torque
40N・ｍ
80N・ｍ
12
EPDT-351