GM 96385403
Crankshaft

When replacing the Crankshaft, start with removing the engine and the Flywheel bolts further on the Flywheel and then the Flywheel along with the Crankshaft rear oil seal. Mount the engine assembly on the otc 1726 (KM 412) engine overhaul stand first and then remove the upper and lower front Timing Belt cover bolts and covers. Loosen the retaining bolts for the Water Pump and use the 42492-a (KM 421-A) timing belt adjuster to ease off tension from the Timing Belt when removing it. Remove the crankcase ventilation tubes, engine cover bolts, as well as the ignition wires, after which you can remove the valve cover and pieces. Take out the intake and exhaust camshaft gears and bolts and the Timing Belt automatic tensioner and idler pulley. Do it carefully. Disengage the Crankshaft Timing Belt gear, rear Timing Belt cover, oil pan, oil pickup tube, and Oil Pump. Remove and mark the connecting rod Crankshaft and Crankshaft bearing caps, and then pull out the crank shaft and upper Crankshaft bearings. Clean anything that needs cleaning, and then install the Crankshaft and bearings, making sure they check clearances and end play. Apply adhesive sealing compound to the rear Crankshaft bearing cap and position the Crankshaft bearings, to be bolted down with new bolts to as specified torque using the 45059 angle meter or km-470-b angular torque gage. Reinstall the connecting rod bearings and covers, then the Oil Pump and its parts. Mount the Oil Pan with a gasket keeping in mind to do so in a timely fashion immediately after applying liquid gasket. Reassemble the Timing Belt parts, camshaft gears and from valve cover, tightening all bolts to the required torque. Finally connect the ignition wires, replace the engine cover, mount the engine mount the engine making sure to replacing the Crankshaft rear oil seal with the 36972 (KM 635) Crankshaft rear oil seal installer above it with the Flywheel and attaching the bolts, fully tightening using the 45059 or km-470-b.

First mount the engine assembly on the otc 1726 (KM 412) engine overhaul stand before proceeding with Crankshaft replacement. First remove bolts securing the Flywheel and then the Flywheel itself and next the Crankshaft rear oil seal. The j 42492-a (KM 421-A) timing belt adjuster helps relieve Timing Belt tension while you use it to loosen Water Pump retaining bolts. First disconnect the crankcase ventilation tubes and engine cover bolts and ignition wires then pull off the valve cover along with its separate components. Next, remove the Timing Belt automatic tensioner and idler pulley after extracting both the camshaft gears. Following the connecting rod and Crankshaft bearing cap sequence, remove and clean the Crankshaft assembly including its bearings. Clean all parts until they meet requirements before installing the Crankshaft alongside bearings while applying engine oil to each bearing. Apply torque on Crankshaft bearing cap bolts to 50 nm (37 ft. Lbs.) using j 45059 angle meter or km-470-b angular torque gage while simultaneously turning each bolt an additional 45 degrees. After applying engine oil to the connecting rod bearings, tighten them to 25 nm (18 ft. Lbs.) then complete additional 30-degree torque and 15-degree torque. Next install the Oil Pump by tightening its retaining bolts before installing the oil pickup tube with its bolts. Begin installing the Oil Pan combined with its gasket while its application of liquid gasket remains within 5 minutes. Reinstall the rear Timing Belt cover along with its bolts followed by placement of Crankshaft Timing Belt gear and automatic tensioner. The Timing Belt Idler Pulley bolt requires torque of 40 nm (30 ft. Lbs.) then tighten the intake camshaft and exhaust camshaft gear bolts to 67.5 nm (49 ft. Lbs.). The Timing Belt receives reinstallation while tension adjustment takes place and valve cover gasket sealing occurs with gasket sealant. Complete valve cover assembly while attaching ignition wires and putting back the engine cover. After connecting the crankcase ventilation tube it's time to reinstall the front Timing Belt cover then place the Power Steering Pump if your vehicle has this component. Reinstall the engine after installing an otc 1726 Crankshaft rear oil seal using j 36972 (KM 635) and tightening the Flywheel's bolts to 35 nm with an additional 30-degree installation followed by 15 degrees tightening with j 45059 or km-470-b.

Remove the upper and lower front timing belt cover bolts and covers.

Carefully remove the intake and exhaust camshaft bolts and gears, followed by the timing belt automatic tensioner and idler pulley.