8 | Baker Hughes
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2. Use 1/2” wrench to remove four cap screws from spring
case with ‘High Trip’ labeled on the actuator block.
3. Use 9/16” wrench to remove nut from diaphragm assembly.
4. Use 3/4” socket wrench to remove Insert assembly.
•
Pin O-ring (Use a paper clip or similar tool to remove
O-ring. Take care not to scratch the part during
removal) (Re-install with Parker Super O-Lube)
•
Insert O-ring (Re-install with Lubriplate 105)
5. Use a paper clip to remove insert O-ring.(take care not to
scratch).
6 Inspect and/or Replace the following seals
•
Sense diaphragm (Re-install dry)
Replacement of Seals in Underpressure Assembly
1. Turn adjusting screw
2. Use 1/2” wrench to remove four cap screws from spring
case with ‘Low Trip’ labeled on the actuator block.
3. Use 9/16” wrench to remove nut from diaphragm assembly.
4. Use head of trip pin to remove the seal plate. (Take care not
to scratch the trip pin).
5. Inspect and/or Replace the following seals
•
Sense diaphragm (Re-install dry)
•
Pin o-ring (Re-install with Parker Super O-Lube)
•
Lower seal plate o-ring (Re-install with Lubriplate 105)
•
Upper seal plate o-ring (Re-install with Lubriplate 105)
•
Inspect and/or replace the rotator shaft part for
excessive wear (Re-install dry)
Replacement of Seals in Main Shaft Assembly
1. Disconnect the Slam Shut sense line from the actuator
block.
2. Use 5/16” allen wrench to remove two cap screws from the
actuator block.
