YAMADA NDP-H40, Maintenance Manual, Page: 5 / 18

2
4.Balls and Valve seats
4.1 Removal
■
BA
□
, BS
□
, BF
□
types
▪
Remove the 6 (8 on the NDP-H80) retainer bolts 1 from
the out manifold, and remove the out manifold. [Fig.4.1]
▪
Remove the ball, valve seat and O ring. [Fig.4.2]
▪
Remove the 6 (8 on the NDP-H80) retainer bolts 2 from
the in manifold, and remove the in manifold. [Fig.4.1]
▪
Remove the ball, valve seat and O ring. [Fig.4.3]