Honda 8-94163-188-1 Crankshaft

Clean the crankshaft with solvent and dry it with compressed air if available. Check the main and connecting rod bearing journals for uneven wear, scoring, pits, and cracks. Clean the oil holes with a stiff brush and flush them with solvent, using a stiff plastic bristle brush for the oil passages in the crankshaft. Inspect the rest of the crankshaft for cracks and other damage, ensuring it is magnafluxed to reveal hidden cracks, which an automotive machine shop can handle. Measure the diameter of the main and connecting rod journals with a micrometer, comparing the results to the specified limits, and check for taper and out-of-round conditions by measuring at several points around each journal's circumference, including each end near the crank throws. If the journals are damaged, tapered, out-of-round, or worn beyond the specified limits, have the crankshaft reground by an automotive machine shop, ensuring the correct size bearing inserts are used if reconditioned. Inspect the oil seal journals at each end of the crankshaft for wear and damage; if grooves, nicks, or scratches are present, the new seal may leak upon reassembly. An automotive machine shop may repair the journal by pressing on a thin sleeve, but if repair isn't feasible, a new or different crankshaft should be installed. Finally, examine the main and rod bearing inserts.

The crankshaft can only be removed when the engine is removed from the vehicle; cautious, the following parts must be removedflywheel/driveplate, crankshaft damper/pulley, timing chain or belt, oil pan, oil pick-up, oil pump, front cover, and piston/connecting rod assemblies. Before the crankshaft can be pulled the rear main oil seal retainer must be removed as well as the bolts that secure the block. But first, make sure the endplay is correct; install a dial indicator, with the stem perpendicular to the crankshaft and touching the crank throw. Position the crankshaft to the rear and set the dial indicator to zero and then force the crankshaft to the front and read the indicator; the movement referred as endplay and should be adjusted using new main or thrust bearings if it exceeds standard measurements. In case a dial indicator is not available, feeler gauges can be applied in the following manner: one has to force the crankshaft forward and then turn it into the front direction and then use the feeler gauge to measure the space that is between the crankshaft and the thrust main bearing-this is the third one. Check that main bearing caps are identified for position from front to rear with progressive numbering and if not number them as required. Start on the main bearing cap bolts and rotate them to the point that they can be alternately unscrewed by hand the sequence of which is as follows; four-cylinder and v/6 engines. Tap with a soft-face hammer on the capings till they come off from the engine block for which the bolts can be used as levers. Finally, very gently lift the crankshaft out of the engine and with bearing inserts set back in place insert the steel caps back to the block with analyzing bearing upgrades & dynanmic squaring the head tighten the bolts only to finger tight.