Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30

SERVICE MANUAL NUMBER 30
496 CID (8.1L)
Oil Filter By-Pass Valves and Adaptor
Inspection and / or Replacement
Oil by-pass valve and adaptor should be inspected whenever engine is disassembled  for
major repair or whenever inadequate oil filtration is suspected.
Refer to “Engine Parts List” when ordering parts for oil filter by-pass valve, adaptor assembly
or remote oil filter parts.
1.
2.
3.
4.
5.
Remove oil hoses from adaptor.
Remove hose fitting and seal from adaptor.
Remove connector.
Clean parts in solvent and blow dry with compressed air.
Inspect fiber valves  for cracks or  other damage. Check that  valves fit tightly against
seats. Push each valve down and release it. Valves should return freely to their seats.
If valve operation is questionable, by-pass valve should be replaced.
a
72546
Typical By-Pass Valve and Adaptor
a  - Fiber Valves (Ensure That Valves Fit Tightly Against Their Seals)
6.
7.
8.
9.
Wipe out valve chamber in cylinder block to remove any foreign material.
Install by-pass valve (if replaced) and connector. Torque adaptor nut to 20 lb-ft (27 Nm).
Lubricate adaptor seal with engine oil. Install hose fitting and torque to specifications.
Apply Perfect Seal to hose threads. Install and tighten securely.
90-863161   SEPTEMBER 2000
INDEX
Page 3A-99
Product Specification
CategoriesMercury MerCruiser Manuals
Tags
Model Year1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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Mercury MerCruiser 496 CID 8.1L Gasoline Marine Engines Service Manual Number 30 SKU UPC Model
Sven-Erik Walin on Jun 10, 2018. crankcase ventilation

How many openings for crankcaseventilation is there on
Merc 496 HO ?


John fox on Apr 11, 2018. Manual

Great down load . it was all there an more


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