Question

Pinion gear-to-flywheel ring gear clearance is being discussed: Technician A says that if there is too much clearance, there will be a high pitch whine while the engine cranks. Technician B says that if there is too little clearance, there will be a high pitch noise after the engine is started. Who is correct?
(A) Technician A
(B) Technician B
(C) Both A and B
(D) Neither A nor B

Answer 1

Answer:C both Technician A and B are correct with their analysis.

Explanation: Gear clearances MUST be checked to be sure it is not too little or too much. pinion gear-to-flywheel ring-gear gap must be 1/8 in its relaxed position. If this gap is too small, use shims to move the pinion away from the ring gear. If this gap is too large, remove the shims already in the starter.