YAMADA NDP-5 Maintenance Manual

Also see for NDP-15 series: Operation manual Operation manual

Contents

YAMADA NDP-5 Maintenance Manual Manual pdf 12 page image

97. C spool valve assembly and Sleeve assembly7.1 Removal▪ Remove the cap using the cap and disk remover (special tool:Part No. 771132). [Fig.7.1]▪ Draw out the C spool valve assembly using the plyer, andremove the seal ring from the C spool valve assembly.[Fig.7.2]▪ Remove the sleeve using the sleeve remover (special tool:Part number 713148). [Fig.7.3]7.2 Inspection▪ C Spool valve AssemblySeal ring [Fig.7.4]Measure the inside thick diameter, and if it is outside theusable range, replace the c spool valve assembly.If the seal ring is worn out or cracked, replace C spool valveassembly.Usable range of seal ringNDP-5 1.40 ~ 1.48 mmNDP-15 1.82 ~ 1.90 mm▪ Sleeve Assembly [Fig.7.5]Measure the inside diameter, and if it is outside the usablerange, replace the sleeve assembly.Usable range of SleeveNDP-5 Ø 9.5 ~ Ø 9.55 mmNDP-15 Ø 15.8 ~ Ø 15.85 mm▪ O ringIf the O ring is worn out or cracked, replace it.▪ C Spool Valve Assembly and Sleeve Assembly must beReplaced complete set. Unable to replace individualcomponent.7.3 InstallationFor installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.▪ Make sure there is no dust on the seal surface and it is notdamaged.

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