Test Step 10. Evaluate the Quality of the Oil

301

TM 9-2320-312-24-2

Troubleshooting Section

Test Step 10. Evaluate the Quality of the

No Before you proceed, ask the customer

Oil

to authorize an oil change with a new oil filter.

Oil changes are not covered by the warranty.

After the engine oil and the oil filter have been

Extended oil drain intervals may cause elevated

changed, operate the engine until normal

levels of soot in the engine oil. The elevated levels

operating temperature has been reached. Run

of soot may also deplete the additive package of

the engine up and down through the operating

the oil. This can affect the operation of the HEUI

rpm range for 10 to 15 minutes. This will purge

high pressure oil system.

any trapped air or debris that is in the system. If

the problem still exists or if the problem reoccurs

Use the following formulas to calculate the correct

in a short period or time, proceed to Test Step 11.

oil change intervals. Scheduled oil sampling should

be used to provide the most accurate oil change

Test Step 11. Check the System with the

interval.

"Injection Actuation Pressure Test"

The formulas require information to be collected

A. Install 8T-0852 Pressure Gauge on the high

from the electronic service tool. Enter the values

pressure oil rail.

from the electronic service tool for "Total Distance"

and "Total Fuel".

B. Connect the electronic service tool to the service

tool connector.

English

C. Access the "Injection Actuation Pressure Test" in

Total Distance ________________ (miles)

the "Diagnostics Menu" of the electronic service

/ Total Fuel ________________ (gallons)

tool and begin the test.

= Overall MPG ________________

Overall MPG ________________

Note: The "Injection Actuation Pressure Test" can

X 50

increase the injection actuation pressure or the

X Oil Pan Capacity in Quarts ________________

"Injection Actuation Pressure Test" can decrease

= Recommended Interval ________________

the injection actuation pressure. The test adjusts the

oil pressure in steps. Depending on the interface

Metric

which you are using, you may have either three

steps or four steps.

Total Distance________________ (kilometers)

/ Total Fuel ________________ (liter)

Table 170

= Overall KPL ________________

Overall KPL ________________

Manual Pressure

Electronic

Difference

Step

X 200

gauge

Service Tool

X Oil Pan Capacity in Liters ________________

= Recommended Interval ________________

Note: The recommended capacities for oil pans that

follow are for truck engines.

The capacity for the shallow oil pan is 21 L (22 qt).

Expected Result:

The capacity for the deep oil pan is 28 L (30 qt).

The pressure that is measured with the pressure

Record the drain interval that the owner is currently

gauge for each step and the pressure that is

using.

displayed on the electronic service tool for each

step are within 1379 kPa (200 psi).

Drain interval

________________

Results:

Miles or Kilometers since the last

________________

oil change.

Yes The injection actuation pressure sensor is

operating properly. Proceed to Test Step 12.

Expected Result:

No The injection actuation pressure sensor

The customer has not exceeded the suggested oil

may be faulty. Replace the sensor and repeat

change interval and an oil change does not need to

this test step. If the problem still exists, verify the

be performed.

accuracy of the pressure gauge. Reinstall the

original sensor and proceed to Test Step 12.

Results:

Yes Proceed to Test Step 11.