Disassembly; Pilot Subassembly - GE Masoneilan 4700P Maintenance Manual

Disassembly

1. To remove from positioner, reverse assembly steps 5 and 4.
NOTE
2. To replace valve (48) O-ring seals, remove retaining ring (49) and slide valve out of
block. Remove O-rings (46) and (47), replace with new rings which have a thin coat
of Krytox or other silicone-compatible lubricant. Replace valve in block and secure
with retaining ring (49).
3. . Reassemble bypass module to positioner.
62 | =GE Oil & Gas
Do not use silicone grease on silicone O-rings.
Figure 18 Pilot Subassembly
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