Tools Required

J 33049 Camshaft Bearing Service Set

Important: 

•	All bearing locations are viewed from the front of the block, with the block in an upright position. The camshaft bearing bores vary in size. On the back of the camshaft bearing is the bore location number from one through five. Be sure to fit the correct camshaft bearing into the correct bore.

•	The outer camshaft bearings must be installed first. These bearings serve as guides for the tool.

•	The rear camshaft bearing must be installed from the front of the block and the front camshaft bearing must be installed from the rear of the block. This allows the tool to remain centered.

•	There is one oil hole in the rear camshaft bearing. Using the seam in the 11 o'clock position as a reference point, the oil hole must be in the 1 o'clock position. Be sure that the oil hole in the camshaft bearing lines up with the oil groove in the block.

1. Install the rear camshaft bearing using the J 33049 .

•	Insert the driving bar with the correct expanding driver into the camshaft bearing, collet 4 for camshaft bearing one.

•	Turn the tool until the collet has tightened in the bearing.

•	Push the guide cone against the block and into the fifth bearing bore to center the tool.

•	Drive the bearing into the block.

Important: There are two oil holes in the front camshaft bearing. Using the seam in the 12 o'clock position, and the notch facing the front of the block as reference points, one oil hole will be in the 1 o'clock position and the other oil hole will be in the 4:30 position. Be sure that both oil holes in the camshaft bearing line up with the oil grooves in the block.




2. Install the front camshaft bearing using the J 33049 .

•	Insert the driving bar with the correct expanding driver into the camshaft bearing, collet 3 for camshaft bearing five.

•	Turn the tool until the collet has tightened in the bearing.

•	Push the guide cone against the block and into the first bearing bore to center the tool.

•	Drive the bearing into the block.

Important: There is one oil hole in the center camshaft bearings. Using the seam in the 11 o'clock position as a reference point, the oil hole must be in the 1 o'clock position. Be sure that the oil hole in the camshaft bearing lines up with the oil groove in the block.

3. Install the inner camshaft bearings using theJ 33049 .

•	Insert the driving bar with the correct expanding driver into the camshaft bearing (collet 4 for camshaft bearings two through four).

•	Turn the tool until the collet has tightened in the bearing.

•	Push the guide cone against the block and into the first bearing bore to center the tool.

•	Drive the bearing into the block.

•	Repeat this procedure in order to install the remaining camshaft bearings.

4. Install a new rear camshaft plug.

•	Use sealer GM P/N United States 12377901, GM P/N Canada 10953504, or equivalent on the camshaft plug.

•	Install the plug flush or to a maximum of 0.80 mm (0.03 in) deep.