YAMADA DP-20F/P, Maintenance Manual

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7
5.3 Installation
For installation, see [Exploded View] on the separate sheet and install in the reverse order of disassembly.
<NOTE>
▪ The O ring on the valve seat is easily separated. Ensure
that the O ring is fitted on the valve seat when attaching
the valve seat to the body.
▪ Insert the seat stopper into the body by turning it until it
reaches the body surface.
▪ Make sure the sealing surface is not dirty or damaged.
▪ Use the pilot valve remover (special tool: Part No. 712606).
▪ Retighten the tie rods before starting the pump.
(See [7. Retightening of tie rods])
6. C Spool valve Assembly
6.1 Removal
▪ Remove the 4 cap from the stud bolts. [Fig.6.1]
▪ Unscrew the 4 retainer nuts from the valve body assembly
to remove the valve body. [Fig.6.2]
▪ Remove the caps on both sides of the valve body using the
pilot valve remover (special tool: Part No. 712606). [Fig.6.3]
Fig.6.1
Fig.6.2
Fig.6.3