Remove/install fuel metering pump

AR83.70-S-5652E

Remove/install fuel metering pump

14.05.2020

Model

447

with code H12 (Auxiliary hot-water heater)

1

Fuel line

2

Electrical connector

3

Fuel hose

4

Screw

M46/1

STH fuel metering pump

 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

 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

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01A

 

Remove/install

1

Remove fuel line (1) from STH fuel metering pump (M46/1)

 Catch the fuel that leaking in a suitable container; plug the fuel line (1).

 Record plug

*129589009100

2

Disconnect electrical connection (2)

3

Remove fuel hose (3)

 Installation: Replace clamp if necessary.

4

Remove STH fuel metering pump (M46/1)

 To do this, remove bolt (4).

 Screw, fuel metering pump holder to heater

*BA83.70-N-1002-01C

5

Install in the reverse order



Check

6

Perform function test of heater

7

Check fuel system in area of STH fuel metering pump (M46/1) for leaktightness

 Visual inspection only.

 Stationary heater unit

Number

Designation

Model 447

BA83.70-N-1002-01C

Screw, fuel metering pump holder to heater

Nm

8