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 (B)</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 (A)</p> Signup and view all the answers

Why should the engine be mounted in an overhaul stand?

<p>To facilitate crankshaft removal (B)</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 (C)</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 (C)</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 (B)</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 (B)</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 (D)</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 (B)</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 (C)</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 (D)</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 (D)</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 (D)</p> Signup and view all the answers

What should you do if binding occurs during crankshaft removal?

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

Why is it important to store the crankshaft properly?

<p>To prevent damage from falls (D)</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 (B)</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 (D)</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 (D)</p> Signup and view all the answers

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

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

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