Drain/pour in coolant

AR20.00-P-1142MNP

Drain/pour in coolant

02.04.2020

Engine

177 in model 167

1

Cap

2

Fan unit

6

Strut

9

Drain fitting

3

Nuts

7

Electrical connector

10

Drain screw

4

Nuts

8

Lock

M43/6

Low temperature circuit circulation pump 1

5

Screw

 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-P-5000-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW



Remove

1

Remove cap (1) from the expansion reservoir.

2

Remove front and center lower engine compartment lining.

AR61.20-P-1105ME

3

Remove nuts (3) and remove coolant lines from the strut (6).

Engine 177 in model 167
except code M036 (Maybach version)

4

Remove nuts(4).

5

Remove screws (5) and remove strut (6).

6

Release and disconnect electrical connector (7).

Engine 177 in model 167
except code M036 (Maybach version)

7

Unlock lock (8), remove low-temperature circuit circulation pump 1 (M43/6) with the bracket from the fan unit (2), and secure against falling down using suitable means.

Engine 177 in model 167
except code M036 (Maybach version)

Drain off

8

Slide drain hose onto drain fitting (9) at cooler.

9

Open drain screw (10), drain coolant, and capture it in a suitable container.


Unscrew drain screw (10) only until the coolant drains off.
Permanent damage to the drain screw (10) will occur otherwise.

 Observe regulations for disposal of coolant.

10

Tighten drain screw (10) and remove drain hose.



Install

11

Attach low-temperature circuit circulation pump 1 (M43/6) to fan unit (2) and connect electrical connector (7) to low-temperature circuit circulation pump 1 (M43/6).

Engine 177 in model 167
except code M036 (Maybach version)

12

Position strut (6), screw in screws (5), and tighten.

 Nut/screw, lower crossmember to radiator unit mounting support

*BA62.30-P-1006-02I

13

Tighten nuts (4).

 Nut/screw, lower crossmember to radiator unit mounting support

*BA62.30-P-1006-02I

14

Position coolant lines on the strut (6) and tighten nuts (3).

Engine 177 in model 167
except code M036 (Maybach version)

 M61

*BA00.10-P-1002-04A

Pour in

15

Pour in coolant and bleed engine cooling system.

AR20.00-P-1142-04A

 Cooling system

*BF20.00-P-1001-02LA

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100



Check

16

Check engine cooling system for leak tightness.

AR20.00-P-1011MNO

 Only install upper engine cover after leak test.

 Warning

Risk of burn injuries, suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.

Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.

AS49.00-Z-0001-01A

 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

17

Perform engine test run; in this connection, check engine cooling system for proper operation and leak tightness.



Install

18

Install center and front lower engine compartment lining.

AR61.20-P-1105ME

 Metric screws/bolts and nuts as per MBN 10 105, 10 143

Number

Designation

8.8

10.9

BA00.10-P-1002-04A

M61

Nm

9

13

 Frond end with reinforcement

Number

Designation

Model 167

BA62.30-P-1006-02I

Nut/screw, lower crossmember to radiator unit mounting support

M10

Nm

55

 Cooling system

Number

Designation

Engine 177 in model 167

BF20.00-P-1001-02LA

Cooling system

Workshop replacement amount

Main circuit

Liter

15,7

Low-temperature circuit

Liter

5,0

Antifreeze/water

Down to -37 °C

%

50/50

-38 °C and below

%

55/45

Specifications for Operating Fluids, sheet

BB00.40-P-0310-01A

Specifications for Operating Fluids, sheet

BB00.40-P-0325-06A

Specifications for Operating Fluids, sheet

BB00.40-P-0326-06A