Question 1

How can the Crankshaft be removed on Acura Integra?

Accepted Answer

The crankshaft can only be removed after the engine has been taken out of the vehicle, assuming that the flywheel or driveplate, timing belt, oil pan, oil pick-up tube, oil pump, baffle plate, and, for specific DOHC non-VTEC engines, the piston/connecting rod assemblies have already been detached. Before removing the crankshaft, check the endplay by mounting a dial indicator aligned with the crankshaft and touching the end, ensuring the main caps and main-cap bridge are in place and torqued. Push the crankshaft to the rear and zero the dial indicator, then pry it to the front to check the reading; the movement indicates the endplay, which should be corrected if it exceeds specifications. If a dial indicator is unavailable, feeler gauges can be used to measure clearance at the thrust bearing journal. For DOHC engines, verify that the main bearing caps are marked for their locations, numbered consecutively from front to rear, and if not, mark them accordingly. Loosen the main bearing cap or bridge assembly bolts gradually until they can be removed by hand, ensuring all bolts are detached before attempting to take off the caps or bridge assembly. Remove the main bearing caps and gently tap the remaining caps with a soft-face hammer if necessary, using bolts as levers to avoid dropping the bearing inserts. Finally, carefully lift the crankshaft out, ideally with assistance, and return the bearing inserts to their respective locations on the engine block, installing the main bearing cap bridge and tightening the bolts finger tight.

Question 2

How Can the Crankshaft Be Removed on an Acura Legend?

Accepted Answer

Once the engine has been removed from the vehicle, so has the flywheel or drive plate, timing belt, oil pan, oil pick up tube, oil pump, piston and connecting rod assemblies all the way up to the crankshaft, because the crankshaft can not be removed if the engine is still in the vehicle. The endplay should be checked before the crank is relieved by mounting a dial indicator with the crank in the datum by touching one of the crank throws and pushing the crankshaft back and forth with a screwdriver. Put the crankshaft at the back of the movement and zero on the dial indicator; then pry it forward and check the reading; the movement gives the endplay, which should be checked for wear in the thrust surfaces if the number exceeds specifications. The clearance of crankshaft to thrust main bearing can be measured if feeler gauges are available by prying crankshaft to the front and measuring the clearance between the crankshaft and the thrust main bearing. If the main bearing caps are not marked if for their locations and not numbered consecutively from front to rear, then mark them accordingly. Starting around the engine, carefully loosen the main bearing cap bolts gradually and gently tap the caps with a soft face hammer to break the block away from the caps, using bolts as levers if need be. Carefully lift the crankshaft out, finally, hopefully with some assistance due to the weight of the whole part, and slide the bearing inserts into their respective locations in the engine block, affixing the main bearing cap bridge and tightening the main bearing bolts finger tight.

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