GEAR AS-SUN 8P7246 - Caterpillar

Every 5000 Service Hours
Engines That Are Not Attached To the Base with a Dowel
If some engines are too rigidly mounted, excessive stress may affect the internal support of the cylinder block. This could cause the following problems:
Distortion of the bores of the main bearing
Distortion of the alignment of the boreSevere damage to the engine could result. The service life of the engine could be severely reduced.For engines that are not attached to the base with a dowel, check the following:
Check the alignment after every 5000 service hours.
Inspect the drive coupling according to the specifications of the OEM.Every 10,000 Service Hours
Engines That Are Attached To the Base with a Dowel
Some engines must be more rigidly mounted. Due to thermal expansion, a cold engine will expand after the engine achieves operating temperature.Some engines are attached to the base with a dowel in the rear mounting support. This installation forces the thermal growth forward. The driven equipment is also attached with a dowel in order to maintain alignment with the engine.For this type of installation, check the alignment after every 10,000 service hours.Check the Alignment
The alignment between the engine and the driven equipment must be maintained properly. Improper alignment will cause damage to the engine, the coupling, and the driven equipment.Check the alignment according to the instructions that are provided by the following manufacturers:
Caterpillar
OEM of the coupling
OEM of the driven equipment