Note: The loss of tension in the installation of camshaft bearings is mainly determined by a change in the geometry of the bearing beds in the cylinder block.
Before removing the bearing, check that the bearing is firmly seated in the cylinder block. Make any necessary repairs to the unit, if necessary.
The camshaft bearing beds in the cylinder block are made in three different diameters.
Bearing beds No. 1 and No. 5 have a maximum diameter, bearing bed No. 3 has a minimum diameter, bearings No. 2 and No. 4 have an intermediate diameter.
Accordingly, the outer diameter of the bearing shells is performed. In this case, the inner diameter of the liners for all bearings of the same size.
A special puller kit is used to replace bearings.
Puller set includes guide cone (1), drive washers (2) And (3), mandrels (4-8), thrust (9) And (10), captures (11), sleeve (12), expansion cone (13), shaft (14) and expansion support (15).
1. Select the correct size arbor and appropriate drive washer.
2. Install the mandrel on the expansion support.
Caution: When installing or removing the mandrel, pull or push the mandrel by the ends. Pressure on the outside diameter may cause the rubber bush to bend.
3. Align the parting lines of the mandrel segments with the parting lines of the support.
4. Install the guide cone on the small diameter rod to the arbor.
5. Install the drive washer over the threaded part of the expansion support.
6. Screw the support with the drive washer into the rod. Removal and installation of inner bearings may require both set rods.
7. Insert a mandrel into the camshaft inner bearing and finger-tighten the support nut. Install the puller from the front or rear end of the cylinder block, depending on the bearing number. On some engine blocks, the support nut may not be accessible. In this case, you need to use a socket wrench and an extension cable installed from the opposite end of the block.
8. Push in the guide cone (2) into the front or rear camshaft bearing to center the puller.
9. Remove or install bearing.
10. Repeat the procedure for the rest of the inner bearings.
11. A guide cone is not required to remove or install front and rear bearings.