Remove/install heating element of engine block heater

AR20.00-S-0004PD

Remove/install heating element of engine block heater

22.11.2019

Model

470 with engine 699.304/305

1

Engine block heater

2

Electrical line

3

Heating elements

4

Bolts

 Danger

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.

AS00.00-Z-0010-01A

 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-P-5000-01A

 

Remove/install

1

Detach ground line of on-board electrical system battery.

AR54.10-S-0003P

2

Drain off coolant.

AR20.00-S-1142P

 Removal: Lower the vehicle for filling first.

3

Remove screws (4).

 M6

*BA00.10-N-1002-01A

4

Remove electric line (2) from the respective heating element (3).

 To do this, remove protective cover and remove nut. The nut remains on the electric line (2).

 Nut, positive line to heating element

*BA20.00-N-1001-01C

 Record plug

*129589009100

5

Remove respective heating element (3) from the coolant preheater (1).

 Heating element to engine block heater

*BA20.00-N-1002-01C

6

Install in the reverse order.



Check

 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

7

Check coolant preheater (1) for leak tightness with the engine running.

 Visual inspection only.

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

8.8

10.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

9

13

Phosphated

Nm

9

12

 Headless screws/bolts: screws/bolts and nuts, coarse-pitch thread

Number

Designation

12.9

BA00.10-N-1002-01A

M6

Galvanized

Nm

16

Phosphated

Nm

14

 Engine block heater

Number

Designation

Engine 699.304/305 in model 470

BA20.00-N-1001-01C

Nut, positive line to heating element

Nm

8

 Engine block heater

Number

Designation

Engine 699.304/305 in model 470

BA20.00-N-1002-01C

Heating element to engine block heater

Nm

20