Camshaft Bearings Camshaft Bearing Removal Figure 12-43 Tool Required: • J 33049 Camshaft Bearing Remover and Installer Remove or Disconnect 1 . Rear camshaft plug. 2 . All camshaft bearings. Use J 33049 (figure 12- 43). A . Insert the tool with the correct collet into the camshaft bearing you want to replace. B . Turn the tool until the collet has tightened in the bearing. Cleaning and Inspection Clean • Camshaft bearing bores in the block. Inspect • Camshaft bearings for scratches, pits, or loose fit in their bores. Replace the camshaft bearings if necessary. • Camshaft lobes and journals for scratches, pitting, scoring, and wear. Minor irregularities may be cleaned up with emery cloth.
Camshaft Bearing Installation Figure 12-43 Install or Connect Tool Required: • J 33049 Camshaft Bearing Remover and Installer NOTICE: The outer camshaft bearings must be installed first. These bearings serve as guides for the pilot, and help center the inner bearings during the installation process. NOTICE: Make sure to fit the correct cam bearing into the bore. The cam bearing bores vary in size. 1 . Rear camshaft bearings. Drive the bearings into place using J 33049 from front of engine (figure 12-43). IMPORTANT: Make sure the camshaft bearing hole (or holes) align with the oil hole (or holes) in the block. On some engines, the oil holes may be difficult to see.
If so, use a piece of 2 mm rod to check alignment. 2 . Front camshaft bearing using tool J 33049 (figure 12-43). IMPORTANT: Make sure the camshaft bearing hole (or holes) align with the oil hole (or holes) in the block. 3 . Inner camshaft bearings using tool J 33049. Reverse of removal procedure. 4 . Camshaft rear plug. Figure 12-43 Removing / Installing Camshaft Bearings C . Push the center cone against the block and into the bearing bore to center the tool. D . Drive the bearing from the block. E . Repeat this procedure to remove the remaining inner camshaft bearings. Note that the rear bearing must be removed from the front of the block and the front bearing from the rear.
This allows the tool to remain centered. G643 (E) Service Manual Chapter 3. Engine Mechanical System 81