2000-OSM, F2
8-79
Replacing the O-Rings
Since the o-rings are inside the valve, you will have to remove the Valve Body from the analyzer. The
o-rings come in a kit, with different kits for 40-psig and 60-psig CP valves (see Figure 8-49). The
rework procedure is the same for both valves.
O-Ring, Fluorocarbon, 1/4 x 1/8 x 1/16
45051-4-11
45051-4-11
O-Ring, Fluorocarbon, 2 x 1-7/8 x 1/16
45051-4-35
O-Ring, Fluorocarbon, 1-3/4 x 1-1/2 x 1/8
45051-4-61
O-Ring, Fluorocarbon, 1-3/8 x 1-1/4 x 1/16
45051-4-29
O-Ring, Fluorocarbon, 1-1/2 x 1-3/8 x 1/16
450501-4-31
Grease, Molykote 33
3616175-1
3616175-1
DESCRIPTION (dimensions are in inches)
40-PSIG KIT
764K001N-2
60-PSIG KIT
764K001N-1
PART NUMBER
Figure 8-49. O-RING KITS
NOTE
It is essential to the analyzer’s operation that all valve ports remain correctly
connected.
To replace the o-rings:
1. Perform the "Preparation and Safety" procedure.
2. Tag each port connection to the valve, using the port numbers stamped on the Valve Plate.
3. Remove the port connections.
4. Remove the air connection on the Valve Body. (You do not have to remove the connection on
the Mounting Plate that attaches to the analyzer.)
5. Using the 7/64- inch hex driver from the CP Valve Tool Kit, loosen the four screws that attach the
Valve Body to the Mounting Plate.
6. Rotate the Valve Body counterclockwise and remove it from the Mounting Plate.
7. Open both Carrier Assembly latches by pulling down on the end of the latches.
8. Remove the Carrier Assembly from the Valve Plate and Valve Body.
9. Push the piston rod into the Valve Body to release the piston, being careful not to scratch any
valve surfaces.
10. Remove the piston and piston rod from the Valve Body.
11. Remove the piston rod o-ring and the piston o-ring.