Question 1

How to replace the Rocker Shaft Spring Kit and Valve Stem Oil Seal on the left side on Buick LaCrosse?

Accepted Answer

Begin the valve stem oil seal and valve spring replacement process of the left side by taking out the Starter motor assembly. The Crankshaft can rotate if the en 46106 flywheel holding tool is absent which requires you to disassemble and reassemble the entire Camshaft timing system. The en 46106 should be installed as a Crankshaft rotation prevention tool before camshafts and rocker arms removal. Position the j 39313 Spark Plug port adapter through the appropriate cylinder and connect it to an air compressor. Place the en 46110 on-vehicle valve spring compressor directly above the targeted cylinder. Exercise caution as compressed valve springs exert high tension; unprocedural manipulation exposes individuals to possible harm. Keeping the valve springs at a minimum of 24.0 mm (0.943 in) compression protects the valve stem oil seal from damage. Begin by using en 46110 valve spring compressor nut tightening to secure the valve springs in place before removing the valve keepers using en 46117 valve stem key remover/installer. Start by loosening the en 46110 valve spring compressor nut before removing the valve spring retainer and valve spring. The en 46116 valve stem seal remover/installer enables effective removal of valve stem seals. The installation process begins with the en 46116 tool to position the new valve stem seal then continues with the installation of valve spring and valve spring retainer. Position the en 46110 valve spring compressor above the valve spring before tightening the compressor nut with the valve keepers oriented correctly so their tapered ends face the valve stem seal. First follow up by compressing the spring and then use en 46117 to position the valve keepers. Finally detach j 39313 from compressed air and remove en 46110. Following Spark Plug installation, put on the rocker arms and camshafts and remove the en 46106 tool before reattaching the Starter motor.

Question 2

How to service and repair the Valve Stem Oil Seal on Buick LeSabre?

Accepted Answer

You need three tools to fix the Valve Stem Oil Seal: break out the Spark Plug port adapter (J 22794), valve spring compressor (J 38606), and valve seal installation tool (J 42863). Take off the Rocker Arm parts along with the spark plugs first. Spin the engine to keep the piston at the upper most position before entering the cylinder to avoid valve damage. The Spark Plug port adapter (J 22794) fits into the cylinder head to block valve movement as compressed air fills the chamber. Use the valve spring compressor j 38606 to press down on the valve spring before taking out the keys valve cap and the spring. Unseal the bottom part of the seal to take out the Valve Stem Oil Seal. To avoid oil seal damage when placing it on the valve stem use only manual pressure while inserting the valve seal installation tool (J 42863). The valve seal installation tool helps position the valve stem seal onto the guide after you press it with the tool. To complete installation put on the valve spring using the valve spring compressor. Place each key in its valve position and follow this method for the rest of the valves. To complete the process you need to deactivate the cylinder pressure then install the Spark Plug by using the Spark Plug port adapter (J 22794).

Question 3

How to service and repair the valve guide seal, replace the valve stem oil seal, and valve spring on Buick Regal?

Accepted Answer

The initial step to fix and repair the Valve Stem Oil Seal and change both the Valve Stem Oil Seal and valve spring is to take out the left or right valve Rocker Arm cover. Make sure the piston in the cylinder you are working on is at the top position by turning the engine. After that, take off the valve rocker arms together with the push rods, and after that remove the Spark Plug. Put the Spark Plug port adapter (J 23590) into the Spark Plug hole, then blow compressed air to close the valves securely. Fit the valve spring compressor (J 38606) onto the valve spring and compress it in order to take out the valve locks, then remove the valve spring and cap, and afterwards, remove the Valve Stem Oil Seal. Examine the valve spring for damage, and use a new one in place of an old or damaged one. After getting the new oil seal, slide it onto the stem until it touches the valve guide, and then install it with the valve stem seal installer (J 42863). Set the valve spring compressor (J 38606) onto the valve spring, squeeze it down, and fit the valve spring and cap, then the valve locks to be sure they seat properly. After loosening the valve spring, empty the air from the Spark Plug port adapter and put the Spark Plug in place. After that, fit the push rods and valve rocker arms in place, and put on the left or right valve Rocker Arm cover.

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