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Manuals
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Webasto Manuals
Heater
HL18 Series
Workshop handbook
Webasto HL18 Series Workshop Handbook
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Avant-Propos
Table of Contents
Technical Data
Technical Data of Heaters
Permissible Diameters and Lengths of Connecting Pipes and Ducts
Summary of Heater Variants
General Description
Air Heaters HL 18 B/D
Air Heaters Air Top 18
Initial Operation
Lnltlal Operation
General Notes
Bleeding the Fuel Supply System
Combustionrcheck
Troubleshooting
Description of Operation
Sequence of Operation (Heaters with Control Unit SG 1559)
Switching on the Heater
Combustion Operation
Start after Control Idle
Switching off the Heater
Switch-Off Upon Failure
Sequence of Operation (Heaters with Control Unit SG 1561 GT and Control Unit SG 1561 GS, Order No. 24189A)
Switching on the Heater
Combustion Operation
Start after Control Idle
Start of Part-Load Operation (Only for HL 18 D)
Start of Full-Load Operation
Switching off the Heater
Switch-Off Upon Failure
Components
Heater Components
Electric Motor (Drive) with Combustion Air Fan
Combustion Air Fan
Combustion Air Adjustment Screw (Grubscrew)
Fuel Connection Complete with Fleece (Evaporator)
Glow Plug (Not in Air Top!)
Glow Pin (Air Top Only)
Flame Detector
Overheat Switch and Safety Switch
Heat Exchanger
Burner Tube
Fuel System Components
Dosing Pump
Fuel Tap
Fuel Filter
Fuel Tank Tap
Exhaust and Combustion Air System Components
Pressure Balancer (Exhaust/Suction Feedthrough)
Exhaust Silencer
Flexible Exhaust Pipe
Combustion Air Pipe
Electrical System Components
Control Unit
Wiring Harness
N (Option)
Glow Plug Dropping Resistor 0.27 (Option)
Resistor (Part-Load)
Pulsing Glow Relay (Option)
Electrical Connection
Repair and Disassembly Instructions
General Important Notes for Repairs
Removal and Installation of Heater
Work on the Vehicle
Heater Test Run
Tools and Test Equipment
Hose Clamp
Test Unit
Glow Plug Wrench
Test Equipment
Performing Modifications
Conversion T~ a Modified Heat Exchanger with Housing
Conversion of Control Unit SG 1559 to Control Unit SG 1561 Gtwith Integral Glow Pulsing
Disassembly Instructions
Maintenance
Test and Maintenance Procedures
Functional Test
Spares Provisioning
Wiring Diagrams
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This manual is also suitable for:
Hl 18 b
Hl 18 d
Hl 18 d trs
Air top 18 d
Air top 18 trs
Air top 18
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