Red Seal Exam Questions

Red Seal Exam Questions A grade 8 UNF capscrew has _ lines on the head. - 6 A metric bolt size of M8 means that _ - The bolt is 8 mm in diameter. On a bolt sized M8 x 1.5, the 1.5 means that _ - The bolt has 1.5 mm between the crest of the threads. Four-stroke cycle engines fire once _ crankshaft revolution/s. - Every two revolutions. If the bore of an engine is increased without any other changes except for the change to oversize replacement pistons, the displacement will _ and the compression rate will_. - Increase, decrease. An engine has low oil pressure. Installing a new oil pump and the correct grade of oil made no difference. What is the problem? - Worn engine bearings The stroke of the engine is determined by the _ - Crankshaft Air, at a pressure of 830 kPa (120 psi), is fed into a spark plug opening with a cylinder leakage tester. Air is heard escaping from the oil fill opening in the camshaft cover. This could indicated _. - Broken piston rings Checking compression on a Diesel engine is done _ - At the glow plug opening Most oil pressure tests are done at idle speed and _ rpm. - 2500 Engine oil leaks are often located by adding fluorescent dye to the oil and checking with an/a_. - Black light When removing a cylinder head, which order should the bolts/nuts be loosened? - In the reverse order of assembly Removing the ring ridge before removing the piston/rod assembly is done to prevent damage to the_ . - Piston ring lands In what area does most cylinder wall wear take place? - Near the top of the cylinder. Squirting oil into the cylinders (wet test) before checking the compression is done to test _. - Piston rings The crankshaft harmonic balancer should be removed by pulling on _ - The damper hub If a notch is found on the head of a piston, the notch usually faces the _ - Front of the engine Piston pin offset is used to _ - Reduce piston slap The valve timing on a single overhead camshaft engine is retarded because of a stretched timing belt. How will this affect performance? - Low RPM power will be reduced Low compression in two cylinders that are side by side is likely caused by_ - A leaking head gasket Before removing the piston/rod assemblies from the engine, the connecting rods should be checked for _ - Proper marking for location Connecting rods are resized by grinding the parting surfaces of the rod and honing the bore back to standard. This cannot be done with most _ rods - Powdered metal Piston rings are installed on the piston with a_ - Piston ring expander A bearing shell is being installed in a connecting rod. The ends of the bearing are slightly above the parting line. This is called bearing _ - Crush Press-fit piston pins are often installed in the connecting rod by _ -