Crankshaft Removal from Engine Block
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Questions and Answers

What should be ensured when mounting the engine in an overhaul stand?

  • The crankshaft is removed before mounting the engine
  • The engine is in a vertical position
  • The lifting equipment and overhaul stand are of sufficient capacity for the engine (correct)
  • The flywheel is removed before mounting the engine
  • Why should the flywheel be handled carefully?

  • It is attached to the crankshaft
  • It is a light metal mass
  • It is fragile and may break
  • It is a heavy metal mass (correct)
  • What is the purpose of installing dowel (guide) studs in the flywheel?

  • To remove the flywheel housing from the cylinder block
  • To allow the flywheel to be slid away from the crankshaft flange (correct)
  • To secure the flywheel to the crankshaft flange
  • To rotate the engine to a vertical position
  • How can heavy flywheels be safely removed?

    <p>Using a lifting jig and a crane or hoist</p> Signup and view all the answers

    What is an alternative method for removing the flywheel when the engine is in an overhaul stand?

    <p>Using a sling assembly and a hoist</p> Signup and view all the answers

    Why should the engine be mounted in an overhaul stand?

    <p>To facilitate crankshaft removal</p> Signup and view all the answers

    What is the purpose of installing a dowel stud in a multi-piece damper assembly?

    <p>To assist in the removal of the vibration damper</p> Signup and view all the answers

    Why is it important to consult the manufacturer's service information for damper removal procedures?

    <p>To obtain the correct tooling and procedures</p> Signup and view all the answers

    What is a common material used in the manufacture of front gear covers?

    <p>Cast or stamped metal</p> Signup and view all the answers

    Why should you take care when removing the front gear cover?

    <p>To avoid damaging the cylinder block</p> Signup and view all the answers

    What is the importance of marking the main bearing caps?

    <p>To identify the cap position in relation to the cylinder block</p> Signup and view all the answers

    Why is it necessary to store removed components in a safe and secure position?

    <p>To prevent component damage</p> Signup and view all the answers

    What is the purpose of wrapping a nylon sling around the crankshaft journals?

    <p>To lift the crankshaft from the cylinder block</p> Signup and view all the answers

    What should you watch for when lifting the crankshaft?

    <p>Counterweights and throws catching on the main bearing webs</p> Signup and view all the answers

    What is the advantage of using an engine hoist to lift the crankshaft?

    <p>Reduced risk of personal injury</p> Signup and view all the answers

    Why is it necessary to return the main bearing caps to their original position during reassembly?

    <p>To maintain bearing bore geometry</p> Signup and view all the answers

    What should you do if binding occurs during crankshaft removal?

    <p>Stop and reposition the crankshaft</p> Signup and view all the answers

    Why is it important to store the crankshaft properly?

    <p>To prevent damage from falls</p> Signup and view all the answers

    How should the crankshaft be stored if it is too large for vertical storage?

    <p>Horizontally on V-blocks</p> Signup and view all the answers

    What should be done with the upper bearing shells after removal?

    <p>Mark them for position and tape them together</p> Signup and view all the answers

    Why should the bearing caps be reinstalled after removal of the crankshaft and bearings?

    <p>To allow for bearing bore measurements</p> Signup and view all the answers

    What is the primary reason for replacing bearing shells during overhaul?

    <p>To ensure optimal engine reliability</p> Signup and view all the answers

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