Maintenance
You do not need to remove the thrust locknut (130) from the shaft unless you plan to
replace either the thrust locknut or the shaft.
Preassembly inspections
Replacement guidelines
Casing check and replacement
WARNING:
Avoid death or serious injury. Leaking fluid can cause fire and/or burns. Inspect and assure gasket sealing
surfaces are not damaged and repair or replace as necessary.
Inspect the casing and head for cracks and excessive wear or pitting. Thoroughly clean gasket
surfaces and alignment fits to remove rust and debris.
Repair or replace these parts if you notice any of these conditions:
• Localized wear or grooving that is greater than 1/8 in. (3.2 mm) deep
• Pitting that is greater than 1/8 in. (3.2 mm) deep
• Irregularities in the casing-gasket seat surface
• Wear ring clearances that exceed the values in the Minimum running clearances table
NOTICE:
When clearances between the rings become excessive (increase by 50%), hydraulic
performance decreases substantially.
Casing areas to inspect
The arrows point to the areas to inspect for wear on the casing:
Model 3610, API Type BB1 API 610 11th Edition Installation, Operation, and Maintenance Manual
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