YAMADA NDP-5 Maintenance Manual page 3

Table of Contents
·Warnings and Cautions
·Table of Contents
1.Principles of operation
2.Tools, etc.
2.1 General tools ----------------------------------------------------------------------- 1
2.2 Special tools ------------------------------------------------------------------------ 1
2.3 Misc. --------------------------------------------------------------------------------- 1
3.Ordering Replacement parts
4.Balls, Flat valves and Valve seats
4.1 Removal
■ □
FAT, FST, BA
■ □ □
FP , FV , FDT types --------------------------------------------------------- 3
4.2 Inspection
■
Ball valve types ------------------------------------------------------------------ 4
■
Flat valve types ------------------------------------------------------------------ 4
4.3 Installation ------------------------------------------------------------------------- 4
5.Diaphragm and Center rod
5.1 Removal
■ □
FAT, FST, BA
■ □ □
FP , FV , FDT types --------------------------------------------------------- 6
5.2 Inspection -------------------------------------------------------------------------- 6
5.3 Installation
■ □ □
B H, B S, FPH, FPS types ------------------------------------------------- 7
■ □ □
B C, B N, B
6.Pilot valve Assembly, Guide and Bushing
6.1 Removal
■
NDP-5 ------------------------------------------------------------------------------- 8
■
NDP-15 ----------------------------------------------------------------------------- 8
6.2 Inspection -------------------------------------------------------------------------- 8
6.3 Installation ------------------------------------------------------------------------- 8
7.C spool valve Assembly and Sleeve Assembly
7.1 Removal ----------------------------------------------------------------------------- 9
7.2 Inspection -------------------------------------------------------------------------- 9
7.3 Installation ------------------------------------------------------------------------- 9
8.Retightening of Tie rods
------------------------------------------------------------ 1
--------------------------------------------------- 1
□
, BS , BPS types ------------------------------------------- 2
□
, BS , BPS types ------------------------------------------- 5
□ □
T, FPC, FPN, F T types -------------------------------- 7
-------------------------------------------------------- 10