GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1997 🢒 Riviera 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Oil Filter Adapter and Bypass Valve Assembly Replacement

Removal Procedure

    Object Number: 36681 Size: SH
  1. Remove the four oil filter adapter bolts from the front cover.
  2. Remove the following components:
    3. 2.1. Remove the oil filter adapter.
    2.2. Remove the gasket.
    2.3. Remove the oil pressure valve.
    2.4. Remove the oil pressure relief valve spring.
  3. Clean all parts in a suitable solvent and allow to dry.
  4. Inspect the following components:
    5. • Oil pressure valve (for burrs)
    • Valve bore (for burrs)
    • Valve spring (for loss of tension)

Installation Procedure

    Object Number: 36681 Size: SH
  1. Install the spring into the front cover.
  2. Install the oil pressure valve into the front cover.
  3. Install a new oil filter adapter gasket.
  4. Install the oil filter adapter.
  5. Install the oil filter adapter bolts.

    6. Tighten
    Tighten the bolts to 30 N·m (22 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.