LPLT Filter Press Instruction Manual
207128
Revision G, September 2012
22
8.2.2 Replacing the seat and pin
If regulator connections do not leak, the seat and pin probably need replacement.
Use the following procedure. Refer to the items shown on Figure 8-1 and 8-2.
1.
Using a wrench on the hex of the spring case, unscrew the spring case. All
parts, including the diaphragm will remain in the spring case.
2.
Remove the thrust plate.
3.
Unscrew the retainer and remove the seat with the pin.
4.
Inspect the regulator for dirt or drilling fluid in the regulator body. Clean the
regulator body, if necessary. An outlet filter (P/N 208626) is available to
prevent dirt or drilling fluid from entering the regulator body.
5.
Replace the pin and seat.
6.
Re-assemble the regulator.
