YAMADA DP-20F/P Maintenance Manual

Contents

YAMADA DP-20F/P Maintenance Manual Manual pdf 3 page image

Table of Contents·Warnings and Cautions·Table of Contents1.Principles of operation --------------------------------------------------------------- 12.Tools, etc.2.1 General tools ---------------------------------------------------------------------- 12.2 Special tools ----------------------------------------------------------------------- 12.3 Others ------------------------------------------------------------------------------- 13 .Balls, Flat valves and Valve seats3.1 Removal ---------------------------------------------------------------------------- 23.2 Inspection■Ball valve types ------------------------------------------------------------------ 3■Flat valve types------------------------------------------------------------------ 33.3 Installation ------------------------------------------------------------------------ 34.Diaphragm and Center rod4.1 Removal ············································································ 44.2 Inspection -------------------------------------------------------------------------- 54.3 Installation ------------------------------------------------------------------------ 55.Pilot valve Assembly, Valve Seats5.1 Removal ············································································ 65.2 Inspection -------------------------------------------------------------------------- 65.3 Installation ------------------------------------------------------------------------ 76.C Spool valve Assembly and Sleeve Assembly6.1 Removal ············································································ 76.2 Inspection -------------------------------------------------------------------------- 96.3 Installation -----------------------------------------------------------------------107.Retightening of Tie rods --------------------------------------------------------108 .Instructions for applying lubrication······································ 118.1 Applying Lubricant to the Packing ········································ 118.2 Applying Lubricant to the Center Rod ---------------------------------- 118.3 Assembly -------------------------------------------------------------------------- 11