King nutronics 3666-12-101 - 1.1 Overview; 1.2 Valve Repair Kit Contents

1.1 OVERVIEW
These instrucons contain the procedures for replacing the seals, ceramic ball, seat assembly, and spring used in the
pressure and venng solenoid assemblies incorporated in the Model 3666 Automac Pressure Calibrator Control Valve
Assembly, King Nutronics Corporaon PN 3666-12-101. All parts required for Control Valve overhaul are included in
the King Nutronics Corporaon PN 3666-245-1 repair kit. Each solenoid in the Control Valve requires one repair kit for
overhaul.
The following should be noted prior to overhauling the Control Valve Assembly:
1. The King Nutronics Corporaon PN 3666-245-1 repair kit can only be used for repair of King Nutronics Corporaon
PN 3666-12-101 Control Valve Assemblies. The repair kit cannot be used with the earlier version of the control
valve, King Nutronics Corporaon PN 3666-12-1.
2. Seal and ball component replacement should only be performed aer it has been determined that improper valve
operaon has been caused by faulty seals or worn parts associated with the ball actuaon mechanism.
3. If replacing the seals and ball components does not recfy the Control Valve problem, contact King Nutronics Cor-
poraon for assistance.
4. Control Valve overhaul should be performed at the Depot level by a technician with experience in the repair and
overhaul of mechanical instruments and components. A clean and well-lighted workbench is also required to en-
sure dust- and contaminant-free assembly of the component parts.
1.2 VALVE REPAIR KIT CONTENTS
The King Nutronics Corporaon PN 3666-245-1 Control Valve Repair Kit contains all of the parts necessary to overhaul
the solenoid assembly on either the “pressure side” or the “vent side” of the PN 3666-12-101 Control Valve. It should
be noted that the components in both of the solenoids are idencal, and the repair kit can be used in either one.
NOTE: Due to the ght tolerances required for proper Control Valve operaon, avoid unnecessary swapping of solenoid
components, such as coils, actuators, seat assemblies, and bodies.
Locaons of the repair kit components in the Control Valve Assembly are depicted in Figure 1 of these instrucons. The
contents of the repair kit are listed below in Table 2.
Table 2
Contents of Control Valve Repair Kit PN 3666-245-1
Quanty Part Number Descripon Fig. 1 Item Number
1 3666-12-9 Ceramic ball 8
1 3666-249-1 Valve seat assembly 11
1 3666-263-1 Ball spring 7
1 KP150011000000 O-ring packing 12
1 KP150000800000 O-ring packing 9
1 KP150011200000 O-ring packing 10
OVERHAUL INSTRUCTIONS FOR
KING NUTRONICS CORPORATION PN 3666-12-101
CONTROL VALVE ASSEMBLY
1-1
King Nutronics Corporaon PUB 3666-245-15, Rev 6/2014