Series 40E Troubleshooting – Section 11.1 Engine Oil Level Check

Section 11.1
Engine Oil Level Check

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Figure 1. Diagnostic Form

The following procedure will lead you through the engine oil level check. For a reproduction of the applicable portion of the diagnostic form, see Figure
“Diagnostic Form”


Section 11.1.1

The engine oil level check will determine if the crankcase and oil reservoir contain engine oil of sufficient quantity and quality to enable the injection control pressure system to function properly.‪

Section 11.1.2
Test Procedure

Follow this procedure to check for sufficient quantity and quality of engine oil‪

  1. Park the vehicle on level ground. Check the oil level with the oil level gage. If there is no oil or very little oil in the crankcase, the fuel injectors will not operate.

    If the oil level on the gage is over full, it is possible the engine was incorrectly serviced or fuel is diluting the oil and filling the crankcase. If a substantial amount of fuel is in the oil, it will have an odor.‪

  2. Inspect the oil for color. A milky white oil indicates possible coolant contamination and will have an ethylene glycol odor.
  3. Check service records for correct oil type and viscosity for the temperature (environment) in which the vehicle is being operated. Single weight or 15W40 oil is not recommended for cold ambient temperatures. Oil that has had extended drain intervals will have increased viscosity (become thicker) and will make engine cranking more difficult. Starting will also be less reliable at temperatures below freezing. Refer to the lubrication oil chart in the Series 40E Engine Operator’s Guide
    , 6SE0240, for the correct oil selection for temperature conditions.

Section 11.1.3
Possible Causes

Possible Causes for the oil level problem include:‪

  • Oil level low — oil leak, oil consumption, incorrect servicing
  • Oil level high — incorrect servicing, fuel dilution from lift pump or defective injector O-rings
  • Oil contamination with coolant — oil cooler, head gasket, porosity, (accessories i.e. water cooled air compressors)

Section 11.1.4
Tools Required


Series 40E Troubleshooting Manual – 6SE241
Generated on 10-13-2008