1.1 OVERVIEW
These instructions contain the procedures for replacing the seals, ceramic ball, seat assembly, and spring used in the
pressure and venting solenoid assemblies incorporated in the Model 3666 Automatic Pressure Calibrator Control Valve
Assembly, King Nutronics Corporation PN 3666-12-101. All parts required for Control Valve overhaul are included in
the King Nutronics Corporation 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 Corporation PN 3666-245-1 repair kit can only be used for repair of King Nutronics Corporation
PN 3666-12-101 Control Valve Assemblies. The repair kit cannot be used with the earlier version of the control
valve, King Nutronics Corporation PN 3666-12-1.
2.
Seal and ball component replacement should only be performed after it has been determined that improper valve
operation has been caused by faulty seals or worn parts associated with the ball actuation mechanism.
3.
If replacing the seals and ball components does not rectify the Control Valve problem, contact King Nutronics Cor
-
poration 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 Corporation 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 identical, and the repair kit can be used in either one.
NOTE: Due to the tight tolerances required for proper Control Valve operation, avoid unnecessary swapping of solenoid
components, such as coils, actuators, seat assemblies, and bodies.
Locations of the repair kit components in the Control Valve Assembly are depicted in Figure 1 of these instructions. The
contents of the repair kit are listed below in Table 2.
Table 2
Contents of Control Valve Repair Kit PN 3666-245-1
Quantity
Part Number
Description
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 Corporation PUB 3666-245-15, Rev 6/2014
