GM 19207664
Valve Seals

For valve stem oil seal and valve spring repair on the left side the needed tools include the en 46106 flywheel holder, en 46110 on-vehicle valve spring compressor, en 46116 valve stem seal tool, and j 39313 Spark Plug port adapter. Put in the en 46106 tool first to stop the crankshaft from turning because failing to do this can result in full Camshaft timing system demolition and rebuild work. First dispose of the camshafts and rocker arms while taking out the Spark Plug from the proper cylinder. Fit the j 39313 adapter tool onto the cylinder cylinder and apply compressed air to work on it. Place the en 46110 above the cylinder then turn its compressor nut until it fits into position. Loosen the valve spring compressor nut and take out the valve spring retainer and valve spring after removing the valve keepers. Install the en 46116 tool to uninstall your valve stem seal. Follow en 46116 procedures when installing the new valve stem seal and then put in the valve spring and valve spring retainer. Reinstall the compressor of en 46110 over the valve spring and tighten its nut then set the valve spring keepers. The j 39313 needs to come out of its air supply connection point while en 46110 gets removed too. Reinstall spark plugs then put rocker arms and camshafts back and remove en 46106 before placing Starter motor assembly.

You must start by taking out the Starter motor to replace the valve stem oil seal and valve spring on the right side. Use the flying wheel holding tool en 46106 before starting work because without it you will need to take apart and rebuild the whole cam timing system. You must first remove the camshafts and rocker arms before taking out the Spark Plug from the engine's present cylinder. Attach the j 39313 adapter tool to the cylinder opening and hose it to compressed air for this operation. Place the en 46110 (On-Vehicle Valve Spring Compressor) over the cylinder and turn its valve spring compressor nut clockwise. Release the valve keepers then loosen and comedown the valve spring compression nut to extract both valve spring retainer and springs. The en 46116 tool helps you take out the valve stem seal. First install the new valve stem seals using en 46116 and then place the valve spring and valve spring retainer. Fit the en 46110 over the valve spring and secure its compressor with proper torque. Install the valve spring keepers afterwards. Unplug the j 39313 from the air supply then detach en 46110. Replace spark plugs and install rocker arms before reattaching the camshafts while taking out the en 46106 component and putting back the Starter motor.

Reinstall the EN 46110 above the valve spring and tighten its nut, then install the valve spring keepers.

It is positioned above the cylinder to tighten its valve spring compressor nut.