Lubricating oil drain interval is excessive
Verify the correct lubricating oil drain interval. Refer to Procedure 102-002 in Section 2 in the ISB CM2150 Owners Manual, Bulletin 4021601, or Procedure 102-002 in Section 2 in the ISB CM2150 Operation and Maintenance Manual, Bulletin 4021602.
Lubricating oil is contaminated with coolant or fuel
Refer to the Lubricating Oil Contaminated symptom tree in Section TS.
Air intake system restriction to air compressor is excessive
Verify air compressor intake restriction is causing the air compressor to pump oil. Refer to Procedure 012-020 in Section 12.
Contaminants are not being drained from the system on a regular basis
Drain the reservoirs daily. Refer to the OEM service manual.
Air compressor pumping time is excessive
Replace the desiccant cartridge on the Turbo/CR 2000 air dryer. Refer to the OEM service manual. Check the air compressor duty cycle. Install a larger air compressor, if necessary. Refer to the OEM service manual.
Carbon buildup is excessive in the air discharge line, air system valves, or cylinder head
Check for carbon buildup. Clean or replace the air compressor discharge line if necessary. Check the turbocharger for oil leaks. Check the intake tube for oil. Refer to Procedure 012-003 in Section 12.
Engine angularity during operation exceeds specification
Refer to the Engine Specification data sheet.
Crankcase pressure is excessive
Check for excessive blowby. Refer to the Crankcase Gases (blowby) Excessive symptom tree in Section TS.
Lubricating oil pressure is above specification
Check the oil pressure. Refer to the Lubricating Oil Pressure High symptom tree in Section TS.
Air compressor runs hot
If coolant temperature is above normal, refer to the Coolant Temperature Above Normal- Gradual Overheat symptom tree in Section TS.
Lubricating oil drain line is restricted
Remove the air compressor and check the oil drain holes in the air compressor and the accessory drive. Refer to Procedure 012-014 in Section 12.
Air compressor drive gear or engine gear train is worn or damaged
Inspect the drive gears and gear train and repair as necessary. Refer to Procedure 012-014 in Section 12.
Air compressor pumping too high
Check the air governor for correct operation. Refer to the OEM service manual.
Air compressor is excessively worn or internally damaged
Inspect the air compressor. Refer to Procedure 012-014 in Section 12.
