1.6.1 Connecting Rod
DETROIT DIESEL 53
Fig. 3. Magnetic Particle Inspection Limits for Connecting Rod
Check the connecting rod for cracks (Fig. 3) as outlined
Replace Spray Nozzle
in Section 1.3 under Crankshaft Inspection.
If it is necessary to replace the spray nozzle, remove the
Check the connecting rod bushings for signs of scoring,
old nozzle as follows:
overheating or other damage. Bushings that have
overheated may become loose and creep together, thus
1. Remove the piston pin bushings from the connecting
blocking off the lubricating oil to the piston pin, bushings
rod as outlined above.
and spray nozzle.
Check the clearance between the piston pin and the
connecting rod bushings. If the clearance exceeds .010"
with used parts, replace the piston pin and/or the
Remove Bushings from Connecting Rod
If it is necessary to replace the connecting rod bushings,
remove them as follows:
1. Clamp the upper end of the connecting rod in holder
J 7632 (Fig. 4) so that the bore in the bushings is
aligned with the hole in the base of the holder.
2. Set the bushing remover J 4972-4 in the connecting
rod bushing, insert handle J 1513-2 in the remover and
drive the bushings from the rod.
Fig. 4. - Removing or Installing Bushings
1970 General Motors Corp.