Remove/install coolant feed tube to exhaust gas recirculation cooler

AR20.20-G-7452HA

Remove/install coolant feed tube to exhaust gas recirculation cooler

08.08.2018

Engine

470.9 in model 800.310/320

1

Exhaust gas recirculation cooler

9

Screw

11

Connection piece

2

Coolant feed pipe on the side

10

Screw

2

Coolant feed pipe on the side

8

Clip

14

Clip

6

Coolant feed line at the front

12

Screw

7

Coolant hose

13

Coolant hose

 Warning

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

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

AS00.00-Z-0005-01A

 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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-N-5000-01H

Note on calculation of tightening torque when using insertion or socket tools with various effective lengths

AH00.00-P-0015-01CW

 

Remove/install

1

Drain coolant at engine radiator

AR20.00-G-1142H

2

Release clamp (8) at coolant hose (7)

Remove coolant feed pipe on the side (2)

3

Unscrew screw/bolts (9, 10)

 Bolt, coolant pipe to carrier for exhaust gas recirculation cooler

*BA14.20-N-1024-01I

 Screw/bolt, coolant pipe to coolant distributor

*BA14.20-N-1025-01I

 Torque tool set

*003589050900

4

Pull coolant feed pipe on the side (2) out of the coolant hose (7)

 Installation: Check coolant hose (7) and clamp (8) for damage, replace if necessary.

5

Pull coolant feed pipe on the side(2) out of the exhaust gas recirculation cooler (1)

 Installation: Replace connection piece (11) and coat with lubricant.
Insert screw/bolt (9) into bracket for the coolant feed pipe on the side (2).

Lubricant, rubber assembly 1 l

*BR00.45-Z-1010-06A

Remove coolant feed pipe at the front (6)

6

Loosen clamp (14) on coolant hose (13)

7

Remove screw/bolts (12)

 Screw/bolt, coolant pipe to cylinder head bracket

*BA14.20-N-1026-01I

8

Pull coolant feed pipe at the front (6) out of the coolant hose (13)

 Installation: Check coolant hose (13) and clamp (14) for damage, replace if necessary.

9

Install in the reverse order

10

Start engine and perform an engine test run

 Allow engine to run at a higher rotational speed.

11

Switch off engine and check area of side coolant feed pipe (2) and front coolant feed pipe (6) for leaks

 Visual inspection.

 Exhaust gas recirculation

Number

Designation

Engine 470.9

BA14.20-N-1024-01I

Bolt, coolant pipe to carrier for exhaust gas recirculation cooler

Nm

30

 Exhaust gas recirculation

Number

Designation

Engine 470.9

BA14.20-N-1025-01I

Screw/bolt, coolant pipe to coolant distributor

Nm

30

 Exhaust gas recirculation

Number

Designation

Engine 470.9

BA14.20-N-1026-01I

Screw/bolt, coolant pipe to cylinder head bracket

Nm

30

Repair materials

Number

Designation

Order number

BR00.45-Z-1010-06A

Lubricant, rubber assembly 1 l

A 000 989 03 67