GM 19260102 Engine Crankshaft FLYWHEEL

For 4.8L, 5.3L, and 6.0L V8 engines, the removal and installation of the driveplate are essentially similar to that of the driveplate for the 4.3L V6 and 5.0L, 5.7L, and 7.4L V8 engines, the torque values obtained from specifications being as follows. Although the spacer between the driveplate and the crankshaft are often turned to lock the crankshaft when the bike is off, sometimes they stick and need to be unscrewed; to do this, use M11 bolts, 1.5 mm long, into the two threaded holes in the spacer; when the bolts are tightened, it will be easier to remove the spacer from the crankshaft.

If you have to strip the transmission, then you must erect the car, and it means that you should apply a couple of jackstands. Use a marker to indicate the position of the driveplate with regards to the crankshaft and then undo the bolts that hold the driveplate to crankshaft and if the crankshaft turns use a screwdriver to lock it. Pay attention to the fact as to whether or not the retaining ring has an installation orientation before you remove it. When disconnecting the final bolt, be sure to hold up the driveplate, and wear gloves, because during the operation the parts can be sharp. The grease and oil of the driveplate must be removed before testing; to do this, check for cracks, and check for warpage on a flat surface. Also, wash up and check the mating surfaces of drive-plate and crank-shaft and change the rear main oil seal if it is worn out before refitting. To install the driveplate the following has to be done; Place the driveplate over the crankshaft with the marks made earlier matching and the correct alignment with dowles or symmetry of bolt holes. Non hardening thread locking compound should then be applied to the threads of the bolt and the retaining ring placed if required. It is necessary to turn the driveplate anti-clockwise using a small screwdriver in order to lock it when tightening the bolts to the required torque. Last but not the least check for the leakage in the front pump seal/O-ring or any tears in it and replace it if required and then reverse the procedure for its installation.

Raise the vehicle and support it securely on jack stands, then remove the transmission. Mark the relationship between the driveplate and the crankshaft with a marker or similar device, then remove the bolts that secure the driveplate to the crankshaft. If the crankshaft turns, wedge a screwdriver in the ring gear teeth to jam the driveplate. Remove the driveplate from the crankshaft. Since the driveplate is fairly heavy, be sure to support it while removing the last bolt. Clean the driveplate to remove grease and oil. Inspect the surface for cracks, and check for cracked and broken ring gear teeth. Lay the driveplate on a flat surface to check for warpage. Clean and inspect the mating surfaces of the driveplate and the crankshaft. If the rear main oil seal is leaking, replace it before reinstalling the driveplate. Position the driveplate against the crankshaft. Be sure to align the marks made during removal. Note that some engines have an alignment dowel or staggered bolt holes to ensure correct installation. Before installing the bolts, apply thread locking compound to the threads and place the retaining ring (if equipped) in position on the driveplate. Wedge a screwdriver through the ring gear teeth to keep the driveplate from turning as you tighten the bolts to the torque specifications. If the transmission front pump seal/o-ring is leaking, now would be a very good time to replace it. The remainder of installation is the reverse of removal.

Raise the vehicle and support it securely on jack stands, then remove the transmission. Mark the relationship between the driveplate and the crankshaft with a marker or similar device, then remove the bolts that secure the driveplate to the crankshaft. If the crankshaft turns, wedge a screwdriver in the ring gear teeth to jam the driveplate. Remove the driveplate from the crankshaft. Since the driveplate is fairly heavy, be sure to support it while removing the last bolt. Clean the driveplate to remove grease and oil. Inspect the surface for cracks, and check for cracked and broken ring gear teeth. Lay the driveplate on a flat surface to check for warpage. Clean and inspect the mating surfaces of the driveplate and the crankshaft. If the rear main oil seal is leaking, replace it before reinstalling the driveplate. Position the driveplate against the crankshaft. Be sure to align the marks made during removal. Note that some engines have an alignment dowel or staggered bolt holes to ensure correct installation. Before installing the bolts, apply thread locking compound to the threads and place the retaining ring (if equipped) in position on the driveplate. Wedge a screwdriver through the ring gear teeth to keep the driveplate from turning as you tighten the bolts to the torque specifications. If the transmission front pump seal/o-ring is leaking, now would be a very good time to replace it. The remainder of installation is the reverse of removal.

Raise the vehicle and support it securely on jack stands.

Raise the vehicle and support it securely on jack stands.