Cylinder Block Specialist No. of Questions= 10 1. A connecting rod can be straightened by ________. a) Bending the rod while it is cold b) Placing the rod in a hydraulic press c) Heating the rod and twisting it to be straight using a special tool d) Machining the cheeks of the small end and large end of the rod to be parallel to each 2. Machinist A says that the connecting rods should be balanced to ensure a smoothly operating engine. Machinist B says that material should be removed from the heaviest connecting rod so that its weight matches that of the lightest rod in the engine. Which machinist is correct? a) Machinist A only b) Machinist B only c) Both Machinist A and B d) Neither Machinist A nor B 3. Machinist A says that if your fingernail catches when rubbed across a bearing journal, the journal must be reground. Machinist B says that both the main and the rod bearing journal should be ground by the same amount to maintain proper crankshaft balance. Which machinist is correct? a) Machinist A only b) Machinist B only c) Both Machinist A and B d) Neither Machinist A nor B 4. Machinist A says that the crankshaft should be ground in the direction opposite that of normal rotation of the crankshaft. Machinist B says that the crankshaft should be polished after grinding, in the same direction as that of normal crankshaft rotation. Which machinist is correct? a) Machinist A only b) Machinist B only c) Both Machinist A and B d) Neither Machinist A nor B 5. Machinist A says that undersize crankshaft journals can be welded up, then ground to size. Machinist B says that the fillet area of the crankshaft can be shot blasted to increase the crankshaft strength. Which machinist is correct? a) Machinist A only b) Machinist B only c) Both Machinist A and B d) Neither Machinist A nor B 6. Crankshafts should be polished using what grit of polishing cloth? a) 150 b) 180 c) 220 d) 320 7. What is attached to the crankshaft while it is being spin tested for balance? a) Bob weights b) External balance weights c) Internal balance weights d) Pistons with connecting rods 8. An externally balanced crankshaft can be changed to an internally balanced crankshaft by replacing the vibration damper. a) True b) False 9. Machinist A says that grinding the crankshaft relieves the stresses in the crankshaft. Machinist B says that blasting the fillet area of the journals with #320 steel shot relieves the stress. Which machinist is correct? a) Machinist A only b) Machinist B only c) Both Machinist A and B d) Neither Machinist A nor B 10. The recommended microinch surface finish for crankshaft journals is ________. a) 10 to 14 Ra b) 18 to 32 Ra c) 45 to 72 Ra d) 60 to 100 Ra Go to top of quiz © Prentice Hall 2004
No. of Questions= 10