Webasto HL 90 - Page 2

List of Contents HL 90
II
7 Circuit Diagrams and Examples for Electrical Installation
7.1 General ................................................................................................................................................. 701
8 Servicing
8.1 General ................................................................................................................................................. 801
8.2 Work on the Air Heater ......................................................................................................................... 801
8.3 Work on the Vehicle.............................................................................................................................. 801
8.4 Air Heater Test Run .............................................................................................................................. 801
8.5 Servicing ............................................................................................................................................... 801
8.6 Visual Inspections and Installation Regulations.................................................................................... 801
8.6.1 Heating Air System .................................................................................................................... 801
8.6.2 Fuel Supply................................................................................................................................ 802
8.6.3 Dosing Pump ............................................................................................................................. 804
8.6.4 Fuel Filter................................................................................................................................... 804
8.6.5 Combustion Air Supply .............................................................................................................. 805
8.6.6 Exhaust Line.............................................................................................................................. 805
8.6.7 Combustion Air Intake and Exhaust Lines................................................................................. 805
8.7 Removal and Installation....................................................................................................................... 806
8.7.1 Heater, Removal and Installation .............................................................................................. 806
8.7.2 Control Unit, Replacement ........................................................................................................ 806
8.7.3 Glow Plug, Replacement ........................................................................................................... 806
8.7.4 Flame Sensor, Replacement ..................................................................................................... 806
8 7.5 Temperature Limiter, Replacement ........................................................................................... 806
8.8 First Operation ...................................................................................................................................... 806
9 Repair
9.1 General ................................................................................................................................................. 901
9.1.1 Work on Components after Disassembly .................................................................................. 901
9.2 Disassembly and Assembly .................................................................................................................. 902
9.2.1 Control Unit, Replacement ........................................................................................................ 902
9.2.2 Glow Plug, Replacement ........................................................................................................... 903
9.2.3 Flame Sensor, Replacement ..................................................................................................... 903
9.2.4 Temperature Limiter, Replacement ........................................................................................... 903
9.2.5 Drive, Replacement ................................................................................................................... 903
9.2.6 Drive, Disassembly and Assembly ............................................................................................ 905
9.2.7 Heat Exchanger, Replacement.................................................................................................. 907
10Storage and Shipping
10 Storage and Shipping ............................................................................................................................ 1001