DAF LF45, LF55 Series. Manual - part 155

©

 200505

6-1

CE engine lubrication system

TECHNICAL DATA

ΛΦ45/55 series

2

0

6. CE ENGINE LUBRICATION SYSTEM

6.1 GENERAL

Oil pressure

Oil filter

Oil cooler

Lubricating oil pump

Lubricating oil pressure at engine idling speed

min. 0.69 bar

Lubricating oil pressure at full-load engine speed

min. 2.07 bar

Bypass pressure regulator opening pressure

3.52 bar

Type

disposable filter

Number

1

Location in the oil circuit

full flow

Oil cooler pressure test temperature

approx. 60

C

Oil section test pressure

4.5 - 5.0 bar

Opening pressure of bypass valve at a pressure 

difference of

3.45 bar

M201077

Maximum clearance, 

inner rotor - outer 

rotor

0.178 mm

M201076

Maximum clearance, 

outer rotor - pump 

housing

0.381 mm

TECHNICAL DATA

6-2

©

 200505

CE engine lubrication system

0

ΛΦ45/55 series

2

Lubricating oil pump gear backlash

Oil consumption

Example:

Average measured fuel consumption: 

25 litres/100 km = 250 litres/1000 km

Maximum permissible engine oil consumption: 

0.5% x 250 = 1.25 litres/1000 km

-

Engine oil consumption of 1.25 litres / 

1000 km is permissible

-

Engine oil consumption > 1.25 litres / 

1000 km; check the engine using the 

diagnostics table. See "Diagnostics".

M201075

Maximum clearance 

of inner and outer 

rotor relative to the 

pump housing, 

measured with a 

straight edge

0.127 mm

Lubricating oil pump idler gear - lubricating oil 

pump gear

0.25 - 0.30 mm

Crankshaft gear - lubricating oil pump idler gear

0.15 - 0.25 mm

Crankshaft gear - lubricating oil pump gear

0.30 - 0.50 mm

Maximum permissible engine oil consumption

0.5% of the average fuel consumption

©

 200505

6-3

CE engine lubrication system

TECHNICAL DATA

ΛΦ45/55 series

2

0

6.2 TIGHTENING TORQUES

The tightening torques stated in this section are 

different from the standard tightening torques 

stated in the overview of the standard tightening 

torques. The other threaded connections not 

specified must therefore be tightened to the 

torque stated in the overview of standard 

tightening torques.

When attachment bolts and nuts are replaced, it 

is important that - unless stated otherwise - these 

bolts and nuts are of exactly the same length and 

property class as those removed.

Oil filter

Oil sump

(1) Tighten the attachment bolts in the order indicated

Oil cooler

(1) Tighten the attachment bolts in the order indicated

Attachment bolts to connect filter head to engine 

block

24 Nm

11

1

3

9

12

4

2

10

M201079

16

14

13

15

5

7

6

8

Oil sump attachment 

bolts

24 Nm

(1)

Oil drain plug

60 Nm

M201145

3

4

8

13

12

7

2

10

6

1

5

9

15

14

11

Attachment bolts 

connecting oil cooler 

to cylinder block

24 Nm

(1)

TECHNICAL DATA

6-4

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 200505

CE engine lubrication system

0

ΛΦ45/55 series

2

Oil pump

Turbocharger oil supply pipe

6.3 FILLING CAPACITIES

Lubrication system

Attachment bolts

24 Nm

Union on filter head

24 Nm

Union on turbocharger

28 Nm

Total capacity, including oil cooler and oil filter

19.5 litres

Oil sump capacity, maximum level

17.5 litres

Oil sump capacity, minimum level

15.5 litres