Troubleshooting Symptoms Charts
B3.9 and B5.9 Series Engines
Section TS - Troubleshooting Symptoms
Engine Noise Excessive -- Connecting Rod
This is symptom tree T049.
Check the oil level. Verify the dipstick calibra-
tion and the oil pan capacity. Fill the system to
Lubricating oil level is below specification
the specified level. Refer to Procedure 007-043
or the Operation and Maintenance Manual, B
Series Engines, Bulletin No. 3810205.
Check the oil pressure. Refer to Procedure
ubricating oil pressure is below specification
007-052. If the pressure is low, refer to the
Lubricating Oil Pressure Low symptom tree.
Refer to the Lubricating Oil System - General
ubricating oil is thin or diluted
Information in Section 7. Refer to the Lubricat-
ing Oil Contaminated symptom tree.
rankshaft journals are damaged or out of
Inspect the crankshaft journals. Refer to
Remove and inspect the connecting rods.
onnecting rod is bent or out of alignment
Refer to Procedure 001-014.
onnecting rod capscrews are loose or not
Check the torque on the connecting rod
capscrews. Refer to Procedure 001-014.
onnecting rod and bearings are damaged or
Inspect the connecting rod and bearings. Refer
worn, are not assembled correctly, or are the
to Procedure 001-005 and 001-014.