Hitachi CHROMASTER 5160, Instruction Manual

Page: 959 / 1022

5.7 Replacing the Injection Valve Seal
NOTE : Before proceeding to replacement of the injection valve
seal, be sure to stop the back flush pump.
Items to be prepared:
Hexagonal wrench (9/64 inch, This wrench is attached to P/N
893-0812)
Wrench (1/4 inch)
Injection valve seal (P/N 893-0812),
(1) Using a wrench (1/4 inch), disconnect the tubes and pipes
from the injection valve port 1 to 5.
Port 1 : from the pump
Port 2 : to the column
Port 5 : drain tube
Port 3 and 6 : Loop
Drain pipe
Loop
Injection valve
Screw cap
Fig. 5-15 Disconnecting Tubes and Pipes
from the Injection Valve
NOTE : Avoid loosing the screw cap.
Otherwise, it may cause a reduction in service life
or performance.
(2) Loosen three stator setscrews using a hexagon wrench
(9/64 inch), and demount the injection valve stator.
(3) Pull out a stator ring.
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