Remove/install heater of hot-water auxiliary heater

AR83.70-D-5400TS

Remove/install heater of hot-water auxiliary heater

20.06.2018

Model

907, 910

with code H12 (Auxiliary hot-water heater)

Model

907, 910

with code HZ9 (Heater booster)

Shown on model 907 with code XM1 (Noise abatement measures)

2

Expansion rivet

3

Cover

4

Fuel metering pump

5

Fuel line

Shown on model 907 with code XM1 (Noise abatement measures)

1

Heater unit

8

Bracket

5

Fuel line

9

Electrical connectors

6

Intake air duct

10

Line bracket

7

Nuts

14

Electrical wiring harness

Shown on model 907 with code XM1 (Noise abatement measures)

1

Heater unit

11

Circuits

12

Hose clamps

13

Coolant hoses

 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

 Danger

Risk of explosion caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contactwith fuel.

No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.

AS47.00-Z-0001-01A

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

 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 coolant

AH20.00-N-2080-01A

 

Remove/install

1

Switch off ignition and store transmitter key outside of transmission range (min. 2  m).

 To prevent the stationary heater from being switched on unintentionally, keep the Telestart transmitter protected against unauthorized or accidental access for the duration of the work on the stationary heater.

2

Lift vehicle with lifting platform.

AR00.60-D-1000-04TS

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

3

Remove expansion rivets (2) and take off cover (3).

Model 907, 910 with code XM1 (Noise abatement measures)

 Installation: Reinstall the cover (3) only after the leak tests.

 Clip remover

*452589016300

4

Remove intake air duct (6).

5

Unclip fuel line (5) from line bracket (10).

 Clip remover

*452589016300

6

Detach fuel line (5) from fuel metering pump (4).

AR83.70-D-5631TS

 Collect escaping fuel with a suitable collecting pan.

7

Seal fuel line (5) immediately with suitable stop plugs.

 Record plug

*129589009100

8

Disconnect electrical connections (9).

9

Unclip electrical wiring harness (14) from bracket (8) (arrows A).

 Clip remover

*452589016300

10

Unfasten nuts (7).

11

Remove heater (1) with bracket (8) until clamps (12) are accessible.

12

Clamp off coolant hoses (13) with clamps (11).

 Clamp

*000589543700

13

Open clamps (12) and detach coolant hoses (13) from heater (1).

 Collect escaping coolant using a suitable collecting pan.

 Hose clamp pliers

*454589003700

14

Seal connection fittings of heater (1) with suitable protective covers.

 Set of protective caps

*001589009100

15

Remove heater (1).

16

Install in the reverse order.



Check

 Danger

Risk of explosion caused by fuel vapors igniting, risk of poisoning caused by inhaling combustible gases and risk of injury caused by burns during and after operation of heater unit

Do not operate stationary heater, auxiliary heater or engine with heater booster in closed rooms or when refueling. Allow heater unit to cool down after operation and wear protective gloves.

AS83.70-Z-0002-01A

17

Perform function test of heater (1).

18

Check fuel system at heater (1) for leaktightness.

 Visual inspection.

19

Check coolant circuit at heater (1) for leaktightness.

 Visual inspection.

20

Check/correct coolant level.

Model 907 with engine 642; model 907, 910 with engine 651

AR20.00-D-1142TSR