GM 12552283
Vibration Damper

Begin the crankshaft balancer replacement by removing the air conditioning (A/C) belt followed by the fan then the Starter motor. The Flywheel holding tool (J 42847) should have its teeth match up with engine Flywheel teeth by inserting it into Starter bolt holes and applying 50 nm (37 ft. Lbs.) torque to the bolts. Install the crankshaft balancer protector button (J 42846) onto the crankshaft end after removing the crankshaft balancer bolt with its washer. The Harmonic Balancer remover (J 38416-B) should be used together with the protector button to extract the crankshaft balancer by inserting its legs into the balancer inner hub recesses and screwing the center screw until the balancer clears the crankshaft nose. Remove both the balancer along with its protector button after completion. Before installing the balancer position it directly onto the crankshaft nose without deviations while applying thick grease of engine oil to prevent metal-to-metal contact. The crankshaft balancer installer (J 42845) should be used to fully position the balancer against the crankshaft sprocket while using the provided lubricant each installation cycle. Once the balancer reaches complete seat position against the crankshaft sprocket use the installer tool to tighten it. Remove the tool to install the crankshaft bolt and washer by torquing it to 255 nm (189 ft. Lbs.). Before completion remove the Flywheel holding tool (J 42847) to reinstall the Starter motor followed by the fan and a/c belt.

The replacement process for crankshaft balancer requires professionals to use these specific tools: crankshaft front oil seal installer (J 41478), crankshaft balancer and sprocket installer (J 41665), crankshaft balancer remover (J 41816), crankshaft end protector (J 41816-2), and flywheel holding tool (J 42386-A) along with angle meter (J 45059). The first step begins by taking off the air conditioning Drive Belt together with lower fan shroud and Starter motor. Use the teeth of the flywheel holding tool (J 42386-A) to achieve the correct mesh position with engine flywheel teeth before installing with two bolts (one M10-1.5 x 120 mm and one M10-1.5 x 45 mm) that require assembly torque of 50 nm (37 ft. Lbs.). The crankshaft balancer bolt needs to be uninstalled but will return for installation. The crankshaft balancer remover (J 41816) with crankshaft end protector (J 41816-2) can be used to properly uninstall the light assembly before cleaning and examination. Place the balancer facing directly onto the crankshaft before installing it with the crankshaft balancer and sprocket installer (J 41665) combined with the crankshaft front oil seal installer (J 41478). Remove the used balancer bolt from its current position once the torque reaches 330 nm (240 ft. Lbs.) but maintain the crankshaft nose at 2.4 - 4.48 mm (0.094 - 0.176 inch) into the balancer bore before its extraction. Run another installation cycle of the crankshaft balancer and sprocket installer (J 41665) in case further procedures are required. A new balancer bolt must be installed before achieving 50 nm (37 ft. Lbs.) torque and 140 degrees measured by an angle meter (J 45059). The procedure ends with Starter motor and lower fan shroud installation and a/c Drive Belt application after removing the flywheel holding tool (J 42386-A). Next step is the crankshaft position system variation learn process.

A basic replacement of the crankshaft balancer requires initial removal of the air conditioning (A/C) belt and subsequent removal of the fan and Starter motor. The teeth of Flywheel holding tool (J 42847) should engage engine Flywheel teeth before installing j 42847 into Starter bolt holes and tightening bolts to 50 nm (37 ft. Lbs.). You should now remove the crankshaft balancer bolt together with washer while fitting the crankshaft balancer protector button (J 42846) at the end of the crankshaft. The Harmonic Balancer remover (J 38416-B) with j 42846 tool enables crankshaft balancer extraction by positioning its legs into the balancer inner hub recesses and tightening the center screw until the balancer clears the crankshaft nose. Take off the j 42846 when the crankshaft balancer removal is complete. Mount the balancer directly on the crankshaft end in a straight alignment while applying grease or clean engine oil to stop galling. The crankshaft balancer installer (J 42845) with lubricant must be applied to ensure proper installation of the balancer. Use the j 42845 to tighten it until complete balancer contact occurs with the crankshaft sprocket before removing the j 42845. Combine the crankshaft bolt with the washer then install it while tightening the crankshaft balancer bolt to 255 nm (189 ft. Lbs.). After removing j 42847 install the Starter motor and replace the fan and a/c belt.

Start the crankshaft balancer replacement by removing the air conditioning (A-C) belt together with the fan and Starter motor. Secure the Flywheel holding tool j42847 tooth engagement by positioning this device between Starter bolt holes and torquing bolts to 50 nm (37ft. Lbs.). The bolt securing the crankshaft balancer together with its washer must be taken off before placing the crankshaft balancer protector button (J 42846) onto the crankshaft end. The Harmonic Balancer remover (J 38416-B) inserts its legs into balancer inner hub recesses and uses the protector button to thread the center screw tight until the balancer moves beyond crankshaft nose position. Take off the protector button prior to removing the balancer. To install the balancer align it on the crankshaft by using either grease or clean oil to stop galling. Use the crankshaft balancer installer (J 42845) on the balancer while applying the supplied lubrication material. Fit the balancer into position against the crankshaft sprocket through proper use of the installer before unsetting it. A crankshaft bolt combined with a washer needs installation together with a balancer bolt torque set to 255 nm (189 ft. Lbs.). Toward the end of the procedure replace the Flywheel holding tool (J 42847), reinstall the Starter motor together with fan and a-c belt.

The process begins by removing the air conditioning (A/C) drive belt together with cooling fan and shroud and Starter motor. Install the Flywheel holding tool (J 42386-A) by allowing its teeth to match the engine Flywheel teeth before fastening it with one m10-1.5 x 120 mm and one m10-1.5 x 45 mm bolt to a torque of 50 n.m (37 lb ft). The bolt 139 serving the crankshaft balancer must be taken out for later reuse in installation. The crankshaft balancer remover (J 41816) and crankshaft end protector (J 41816-2) should be installed onto the crankshaft balancer before using them to remove the balancer component (138). The installation of the balancer requires first positioning it on the crankshaft followed by using the crankshaft balancer and sprocket installer (J 41665) with crankshaft front oil seal installer (J 41478) threaded rod to execute balancer mounting. Tighten the used crankshaft balancer bolt (139) to 330 n.m (240 lb ft) then remove it and check that the crankshaft nose enters the balancer bore 2.4-4.48 mm (0.094-0.176 in) deep. Use the measuring tool to check if installation is correct; carry out the procedure again if needed for proper positioning. Place the new crankshaft balancer bolt (139) with initial torque to 50 n.m (37 lb ft) followed by an angle meter (J 45059) procedure for final 140-degree tightening. Complete the procedure by taking out the Flywheel holding tool (J 42386-A) along with the bolts before putting back the Starter motor and cooling fan assembly, a/c Drive Belt while performing the crankshaft position (CKP) system variation learn procedure.

Install a new balancer bolt, tightening it first to 50 Nm (37 ft. lbs.) and then to 140 degrees using the Angle Meter (J 45059).

Install a new balancer bolt, tightening first to 50 Nm (37 ft. lbs.) and then to 140 degrees using the Angle Meter (J45059).