Installing Heater

Information 

• There is no guarantee that re-used clamps will secure the component properly. 
• Removed clamps must be replaced. 
• Always use new clamps during installation. 

1. Connect electric plug connections -1-  until they engage securely.

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   Electric plug connections on heater

2. Place heater in position.

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   Installing heater

   1. 2.1  Position rubber sleeve -1-  on the retaining pin -2-  .
   2. 2.2  Engage clip -3-  on the holder into the cut-out -4-  .
3. Fit screws for heater holder -1-  by hand.

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   Mounting for heater

4. Position flexi-pipe for silencer -1-  .

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   Flexi-pipe on silencer

   1. 4.1  Push flexi-pipe for silencer -1-  with screw-type clamp -2-  onto the exhaust pipe.
   2. 4.2  Tighten screws on heater holder.
      • Tightening torque 20 Nm (15 ftlb.) 
   3. 4.3  Tighten screw-type clamp -2-  .
      • Tightening torque 4 Nm (3 ftlb.) 
5. Secure coolant hoses -1-  .

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   Coolant hoses

   1. 5.1  Push coolant hoses -1-  onto the coolant pipes.
   2. 5.2  Fasten spring band clamps -2-  using > VAS 6890 - spring band clamp pliers  .
   3. 5.3  > 3094 - Hose clamp  must be removed from the coolant hoses -1-  .
6. Clip electric line -1-  onto the coolant hose -2-  at the marked positions -Arrows-  .

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   Electric line on coolant hose

7. Connect electric plug connection -1-  to the circulating pump -2-  until it engages securely.

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   Electric plug connection on circulating pump

8. Clip electric line -1-  into holder -2-  at position -Arrow-  .

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   Electric line on holder

9. Secure the fuel line -1-  on the heater.

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   Fuel line

   1. 9.1  Push on fuel line -1-  as far as it will go - ensure a minimum overlap of 25 mm.
   2. 9.2  Fasten spring band clamp -2-  using > VAS 6890 - spring band clamp pliers  .
10. Pre-fill the fuel system: 
    1. 10.1  Connect the PIWIS Tester  to the vehicle.
    2. 10.2  Select the Auxiliary heating  control unit in the control unit overview. 
    3. 10.3 Maintenance/repairs  must now be selected.
    4. 10.4 Line filling  must now be selected. Then press Next.