Crankshaft Removal from Engine Block

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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?

Using a lifting jig and a crane or hoist (B) Signup and view all the answers

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

Using a sling assembly and a hoist (A) Signup and view all the answers

Why should the engine be mounted in an overhaul stand?

To facilitate crankshaft removal (B) Signup and view all the answers

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

To assist in the removal of the vibration damper (C) Signup and view all the answers

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

To obtain the correct tooling and procedures (C) Signup and view all the answers

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

Cast or stamped metal (B) Signup and view all the answers

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

To avoid damaging the cylinder block (B) Signup and view all the answers

What is the importance of marking the main bearing caps?

To identify the cap position in relation to the cylinder block (D) Signup and view all the answers

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

To prevent component damage (B) Signup and view all the answers

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

To lift the crankshaft from the cylinder block (C) Signup and view all the answers

What should you watch for when lifting the crankshaft?

Counterweights and throws catching on the main bearing webs (D) Signup and view all the answers

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

Reduced risk of personal injury (D) Signup and view all the answers

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

To maintain bearing bore geometry (D) Signup and view all the answers

What should you do if binding occurs during crankshaft removal?

Stop and reposition the crankshaft (B) Signup and view all the answers

Why is it important to store the crankshaft properly?

To prevent damage from falls (D) Signup and view all the answers

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

Horizontally on V-blocks (B) Signup and view all the answers

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

Mark them for position and tape them together (D) Signup and view all the answers

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

To allow for bearing bore measurements (D) Signup and view all the answers

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

To ensure optimal engine reliability (C) Signup and view all the answers