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".

M201154

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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".

M201077

M201076

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CE ENGINE LUBRICATION SYSTEM

ΛΦ45/55 series

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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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