ar1830b6840a

Remove/install oil-water heat exchanger

Type ar · topic 18.30 · version 0103 · 2020-01-09

Applies to: Engine 904.9, 924.9 in model 368.0/1, 384.06/07, 685.282/284/289/290, 979.2

Where it sits

Function group 1 Engine › 18 Engine lubrication, engine oil cooling › 18.30 Oil cooling system — Series 368 (models 0**, 1**) · Series 384 (models 06*, 07*) · Series 685 (models 282, 284, 289, 290) · Series 904 (models 9**) · Series 979 (models 2**)

EinPAS 15 Engine › 15.20 Engine lubrication system › 15.20.31 Filter/cooling/thermostat/fan/container — Series 368 (models 0**, 1**) · Series 384 (models 06*, 07*) · Series 685 (models 282, 284, 289, 290) · Series 904 (models 9**) · Series 979 (models 2**)

Also applies to engines/gearboxes: 924 9**

AR18.30-B-6840A

Remove/install oil-water heat exchanger

08.01.2020

Engine

904.9, 924.9 in model 368.0/1, 384.06/07, 685.282/284/289/290, 979.2

Remove/install oil-water heat exchanger

B18.30-0006-09

1

Heat exchanger assembly

6.1

Oil filtering element

1.1

Bolt

6.2

Seal ring

1.2

Heat exchanger cover

6.3

Oil filter cap

1.3

Heat exchanger

7

Oil pressure tube

1.4

Gasket

8

Hollow screw

2

Gasket

9

Air inlet tube

3

Bolt

10

Plug

4

Engine vent

11

Bolt

5

Bolt

12

Exhaust manifold

6

Oil filter housing

Remove/install

Warning

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A

1

Drain the cooling system

Topical note

Notes on coolant

AH20.00-N-2080-01A

Replace coolant

.

AP20.00-B-2080XA

Catch the coolant, change it if necessary.

2

Unscrew the oil filter cap (6.3) from the oil filter housing (6)

When unscrewing the filter cap (6.3), the oil will flow to the oil sump.

Installation: Check the sealing ring (6.2) on the filter cap (6.3), if necessary, replace it.

.Oil filter cover to filter body

*BA18.20-B-1003-01B

3

Remove oil separator engine breather (4)

4

Remove the air intake tube (9)

Remove/install air intake hose
.

AR09.10-B-8030XA

Installation: Clean and check the intake tube conditions (9). If necessary, replace it.

5

Remove the screw (5) from the connection housing

.Connection part of the cooling pump in the thermostatic valve head/cover

*BA20.10-B-1003-01B

6

Remove the oil pressure tube (7) from the oil filter housing (6)

Collect the drained motor oil.

Installation: Replace sealing rings.

7

Remove the oil pressure tube (7) from the turbocharger

Plug the oil hole on the turbocharger.

8

Remove the plug (10) on the heat exchanger (1) and drain the engine oil

Collect the drained motor oil.

Installation: Replace the sealing ring.

.Plug to the heat exchanger

*BA18.30-B-1003-01B

9

Unscrew the exhaust manifold mounting bolts (11) by approximately 4 mm and move the exhaust manifold (12) away from the head

Remove/install exhaust manifold
.

AR14.10-B-3915A

Installation: Check the condition of the manifold joints. If necessary, remove the exhaust manifold and replace them.

Tighten the exhaust manifold screws (11).

.Exhaust manifold to cylinder head

*BA14.10-B-1001-01C

10

Remove the screws (3) and remove the whole heat exchanger (1) assembly

Collect the drained coolant and motor oil.

Installation: Tighten the screws (1.1, 3).

.Heat exchanger to the block

*BA18.30-B-1001-01B

.Exchanger cover to the exchanger

*BA18.30-B-1002-01B

11

Remove the gasket (2) from the heat exchanger assembly (1)

Installation: Replace the gasket (2).

12

Remove the screw (1.1) and remove the heat exchanger (1.2) cap

Installation: Tighten the screw (1.1) only after installing the heat exchanger (1) on the engine block.

13

Remove the gasket (1.4) from the heat exchanger cap (1.2)

Installation: Replace the gasket (1.4).

14

Install in reverse order

15

Check the lubricating oil level

If necessary, refill using the same brand and type of oil, up to the top level.

The oil level should be checked with the vehicle parked on level ground.

Under no circumstances should the oil level exceed the top level reference of the dipstick.

Exhaust manifold

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BA14.10-B-1001-01C

Exhaust manifold to cylinder head

1st stage

Nm

10

10

2nd stage

Nm

55

55

3rd stage

Graus

90...100

90...100

Oil filter

Number

Designation

Engine 902.9, 904.9, 906.9

Engine 924.9, 926.9

BA18.20-B-1003-01B

Oil filter cover to filter body

Nm

25

25

Oil cooling

Number

Designation

Engine 904.9; 906.9

Engine 924.9; 926.9

BA18.30-B-1001-01B

Heat exchanger to the block

Nm

25

25

Oil cooling

Number

Designation

Engine 904.9; 906.9

Engine 924.9; 926.9

BA18.30-B-1002-01B

Exchanger cover to the exchanger

Nm

25

25

Oil cooling

Number

Designation

Engine 904.9; 906.9

Engine 924.9; 926.9

BA18.30-B-1003-01B

Plug to the heat exchanger

Nm

35

35

Coolant pump, thermostat

Number

Designation

Engine 904.9, 906.9

Engine 924.9, 926.9

BA20.10-B-1003-01B

Connection part of the cooling pump in the thermostatic valve head/cover

Nm

50

50

Referenced documents