Remove/install oil-water heat exchanger

AR18.30-W-6840JA

Remove/install oil-water heat exchanger

8.2.11

 

Remove/install

1

Switch off ignition

 Danger!

Risk of injury caused by body parts being pinched or crushed as cab is tilted

Ensure that no one is within the tilting range of the cab as it is being tilted. Always tilt the cab all the way to the end position and secure with the safety strut.

AS60.80-Z-0001-01A

2

Tilt cab

 Installation: Only tilt cab back after leak test has been conducted.



Notes on tilting the cab

AH60.80-N-0003-01A

3

Drain coolant at radiator

AR20.00-W-1142J

4

Remove holder from metering device for exhaust aftertreatment system

 Only for vehicles with code (MS4) BlueTec 4 or with code (MS5) BlueTec 5.

AR14.40-W-2023J

5

Remove charge air pipe (1) from turbocharger to charge air cooler

 Installation: Do not install charge air pipe (1) until the engine oil circuit has been filled.

AR09.41-W-1311JC

6

Remove air intake hose (2)

 Installation: Do not install air intake hose (2) until the engine oil circuit has been filled.

7

Unscrew oil filter cover (10) and remove

 Installation: Replace O-ring (10) for oil level sensor.



*BA18.20-N-1003-01B

8

Remove crankcase breather line (9)



*BA20.10-N-1003-01C

9

Remove oil pressure line (7)

 Close off oil pressure bore holes.

 Installation: Replace sealing rings.



*BA09.40-N-1006-01B

10

Separate electrical connectors (6)

11

Clean cylinder head in area of the exhaust manifold (8)

12

Slacken exhaust manifold (8) on cylinder head and push away

 When detaching exhaust manifold (8) ensure that neither dirt nor foreign objects find their way into in the exhaust manifold (8) to avoid damage to the turbocharger.

 Unscrew exhaust manifold bolts in the lower row by about 10 mm and in the upper row completely. Cover opening between exhaust manifold (8) and cylinder head.

 Installation: Replace seals.

Check shank length of exhaust manifold bolts; replace if necessary. Unscrew individual exhaust manifold bolts in the lower row to check them.

*BE14.10-N-1001-01A



*BA14.10-N-1001-01B

13

Remove cover (5) with oil/water heat exchanger (3) on cylinder crankcase

 Installation: Clean sealing surfaces and install new gasket.



*BA18.30-N-1001-01C

14

Remove oil-water heat exchanger (3) on cover (5)

 Installation: Clean sealing surfaces and replace gasket (4).

Only tighten bolt (11) after installing the oil/water heat exchanger (3) and the cover (5) in the cylinder crankcase.



*BA18.30-N-1002-01C

15

Remove engine oil temperature sensor (B11) on cover (5)

 Only for leaks on engine oil temperature sensor (B11), or for replacing the cover (5).

 Installation: Replace sealing ring.



*BA18.40-N-1006-01C

16

Install in the reverse order

17

Fillling the engine oil circuit

AR18.00-W-1600J

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

18

Start engine and allow to run in idle for 10 s until the oil pressure has built up, then run the engine at varying speeds

 Danger!

Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running

Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

19

Check oil/water heat exchanger (3), oil pressure line (7) and exhaust manifold (8) for leaks for a running engine

 Visual inspection.

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BE14.10-N-1001-01A

Exhaust manifold bolts

Thread diameter

M

10

10

Shank length
when new

mm

47.0

47.0

Permissible shank length

mm

47.5

47.5

Number

Designation

Engine
900.9, 904.9

Engine
924.9, 925.9, 926.9

BA09.40-N-1006-01B

Union nut, oil pressure line to turbocharger

M14

Nm

30

30

M16

Nm

35

35

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BA14.10-N-1001-01B

Bolt, exhaust manifold to cylinder head

Stage 1

Nm

10

10

Stage 2

Nm

55

55

Stage 3

°

90

90

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BA18.20-N-1003-01B

Oil filter cover to oil filter housing

Nm

25

25

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BA18.30-N-1001-01C

Bolt, oil-water heat exchanger to crankcase

Nm

25

25

BA18.30-N-1002-01C

Bolt, housing cover to oil-water heat exchanger

Nm

25

25

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BA18.40-N-1006-01C

Engine oil temperature sensor to oil/water heat exchanger

Nm

35

35

Number

Designation

Engines
900.9, 902.9, 904.9, 906.9

Engine
924.9, 925.9, 926.9

BA20.10-N-1003-01C

Bolt, connection piece of coolant pump to cylinder head

Nm

50

50