DAF LF45, LF55 Series. Manual — part 211

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3.3 PRESSURE-TESTING THE OIL COOLER

1.

Remove the oil cooler. See "Removal and

installation".

2.

Fit special tool (DAF no. 1329478) to the oil

cooler.

3.

Connect an air hose with pressure reducer

valve to the special tool.

4.

Immerse the oil cooler in warm water and set

the specified air pressure. See "Technical

data" for the specified water temperature and

the test pressure.

5.

Check the cooling element for leakage.

Note:

The oil cooler should be replaced if it is

leaking.

6.

Remove the special tool.

7.

Fit the oil cooler. See "Removal and

installation".

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3.4 INSPECTING THE LUBRICATING OIL PUMP

Inspecting the lubricating oil pump
1.

Check the lubricating oil pump drive gears

for damage and excessive wear.

2.

Check the drive gear backlash. See

"Technical data".

3.

Remove the rear plate from the lubricating oil

pump.

4.

Check the play between the inner and outer

rotors using a feeler gauge. See "Technical

data".

5.

Check the play between the outer rotor and

the pump housing using a feeler gauge. See

"Technical data".

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6.

Using a feeler gauge and a straight edge

check the play between the inner and outer

rotors in relation to the pump housing. See

"Technical data".

7.

Mark the top of the outer rotor and remove

the outer rotor.

8.

Check the inner rotor and outer rotor for

damage and excessive wear.

9.

Fit the outer rotor with the marked side

upwards.

10. Fit the rear plate.

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