Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSOLDSMOBILE1997LSS V6-3.8L VIN KREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYSYSTEM SPECIFICATIONSFASTENER TIGHTENING SPECIFICATIONS - MAIN BEARING
1997 Oldsmobile LSS V6-3.8L VIN K
Fastener Tightening Specifications - Main Bearing
1997 Oldsmobile LSS V6-3.8L VIN KSECTION Fastener Tightening Specifications - Main Bearing
Install the main bearing caps. Use GM approved sealer at the Number 4 main bearing cap to the block surface.
CAUTION: This bolt is designed to permanently stretch when tightened. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.
Install the main bearing cap bolts. Start the main bolts by hand. Ensure that the bottom of the cap is parallel to the bottom of the channel.
Tighten all of the caps in equal increments. Do not tighten one cap completely at a time.
Tighten the bolts to 70 Nm (52 ft. lbs.) in order to fully seat the caps. Loosen the bolts 360 degrees counterclockwise.
Tighten the bolts to 20 Nm (15 ft. lbs.), then 40 Nm (30 ft. lbs.).
Use the Torque Angle Meter in order to tighten the bolts in steps: 35 degrees+35 degrees+40 degrees for a total of 110 degrees.
Install the side main bolts. Tighten the side main bolts to 15 Nm (11 ft. lbs.). Use the Torque Angle Meter in order to tighten the bolts an additional 45 degrees.
CAUTION: This bolt is designed to permanently stretch when tightened. The correct part number fastener must be used to replace this type of fastener. Do not use a bolt that is stronger in this application. If the correct bolt is not used, the parts will not be tightened correctly. The system or the components may be damaged.
Install the main bearing cap bolts. Start the main bolts by hand. Ensure that the bottom of the cap is parallel to the bottom of the channel.
Tighten all of the caps in equal increments. Do not tighten one cap completely at a time.
Tighten the bolts to 70 Nm (52 ft. lbs.) in order to fully seat the caps. Loosen the bolts 360 degrees counterclockwise.
Tighten the bolts to 20 Nm (15 ft. lbs.), then 40 Nm (30 ft. lbs.).
Use the Torque Angle Meter in order to tighten the bolts in steps: 35 degrees+35 degrees+40 degrees for a total of 110 degrees.
Install the side main bolts. Tighten the side main bolts to 15 Nm (11 ft. lbs.). Use the Torque Angle Meter in order to tighten the bolts an additional 45 degrees.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.