King nutronics 3666-12-101 - 1.3.2 Valve Overhaul and Assembly Procedure

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1.3.2 VALVE OVERHAUL AND ASSEMBLY PROCEDURE

To overhaul and reassemble the King Nutronics Corporaon PN 3666-12-101 Control Valve Assembly, do the following:

NOTE: The Valve Seat Assembly, King Nutronics Corporaon PN 3666-249-1, consists of a Valve Seat permanently ce-

mented onto an Actuator Guide Assembly. This unit supersedes earlier versions in which a replaceable Valve Seat was

pressed onto the Actuator Guide Assembly. Do not aempt to remove the Valve Seat from the PN 3666-249-1 Valve

Seat Assembly or damage will result.

1. Insert the Spacer (4) and Washer (5) into the valve body.

2. Insert the Ball Guide (6) into the valve body.

3. Insert the replacement Ball Spring (7) included in the kit into the Ball Guide (6).

4. Posion the replacement Ball (8) on top of the Ball Spring (7) in the Ball Guide (6).

5. Install the replacement O-ring packing (9) on the Valve Seat Assembly (11) as shown in Figure 1.

6. Install the replacement O-ring packings (10) and (12) on the Valve Seat Assembly (11) as shown in Figure 1.

7. Carefully clean the face of the valve seat using a coon swab moistened with isopropyl alcohol. Blow dry gently

with compressed air.

8. Insert the Valve Seat Assembly (11) into the valve body by gently turning and pushing straight down.

9. Posion the Solenoid Coil Assembly (1) on the Valve Seat Assembly (11). Secure the Solenoid Coil Assembly (1)

with the Gland Nut (2).

10. Using a torque wrench, ghten the Gland Nut (2) to 45 -lbs.

11. Safety wire the Gland Nut (2) to the valve body.

12. Posion the Control Valve in the Chassis Assembly. Connect the three tubing assemblies in the chassis to the Con-

trol Valve. The tube ngs should be “nger ght” for this step.

13. Posion the rubber pad in the chassis assembly. Secure the rubber pad and Control Valve using the two screws and

washers removed during disassembly.

14. Tighten the three tubing connecons to the Control Valve using an appropriate wrench.

15. Connect the Control Valve wiring harness to its connector on the exible circuit assembly.

16. Swing the Main PCB assembly back onto the chassis and secure it using the screws and washers removed during

disassembly.

17. Install the Chassis Assembly in the case.

1-3King Nutronics Corporaon PUB 3666-245-15, Rev 6/2014