1.7.2 Camshaft and Bearings
DETROIT DIESEL 53
Remove Bearings
The end bearings must be removed prior to removing the intermediate bearings.
CAUTION: When removing the bearings be sure to note the position of the
bearings in the bore with respect to the notch in the bearings.
Replacement bearings must be installed in the same position.
1. Remove all accessories and assemblies with their attaching parts as is necessary so that tool set J 7593-
02 may be used as shown in Fig. 3 and in A of Fig. 7. Tool set J 7593-03, designed for use with standard size
bearings, may be used to remove and install .010" undersize and .020 " undersize bearings by reducing the
pilot diameter of the pilot J 7593-2, installer J 7593-3, remover J 7593-5, installer J 7593-6, and installer J
7593-15. The pilot diameter of these tools should be reduced by .020 ". This reduction in tool diameter does
not materially effect usage on standard size bearings. If the tools are used frequently, however, it may be
advisable to purchase additional standard pieces. Reduced diameter tools have not been released.
2. Insert the small diameter end of the pilot J 7593-2 into the end bearing.
3. Then, with the unthreaded end of the shaft J 7593-1 started through the pilot, push the shaft through the
block bore until the end of the shaft snaps into the remover J 7593-5.
4. Now drive the end bearing out of the cylinder block. The nearest intermediate and/or center bearings can
be removed now in the same manner. The large diameter end of pilot J 7593-2 will fit into
Figure 5. Camshaft and Balance Shaft Bearing Identification
Figure 6. Location of Notch in Relation to Shaft Bore Centerline
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