8.14.10 Preheater – Heating element and housing check
Preconditions
☑
Engine is stopped and starting disabled.
Special tools, Material, Spare parts
Designation / Use
Part No.
Qty.
Screw locking compound (Loctite 586)
40033
1
O-ring
(→ Spare Parts Catalog)
1
DANGER
Electric voltage supply for operation.
Danger of burns and fatal electric shock!
• Make certain that the power supply to the product is switched off before starting work. Secure
against unintentional switching on!
WARNING
Hot components/surfaces.
Risk of burns!
• Allow the engine to cool down to below 50 °C before beginning work.
• Wear suitable protective equipment/thermal gloves.
• Avoid unprotected contact with hot surfaces.
WARNING
Coolant is hot and under pressure.
Risk of injury and scalding!
• Let the engine cool down.
• Wear protective clothing, gloves, and goggles / safety mask.
WARNING
Coolant contains antifreeze and is toxic.
Risk of poisoning and slipping!
• Avoid contact with eyes and skin.
• Do not inhale vapors or mist, wear breathing protection.
• Do not eat, drink, smoke when working with antifreeze.
• Wear protective clothing, protective gloves and goggles/safety mask.
• Wipe up escaped/spilled coolant immediately.
NOTICE
Cold coolant in hot engine can cause thermal stress.
Possible formation of cracks in the engine!
• Fill / top up coolant only into cold engine.
Preparatory steps
1.
Switch off preheater.
2.
Disconnect all preheater power sources.
3.
Allow heating elements to cool down.
Removing coolant lines
1.
Close shutoff valves in coolant return line and coolant supply line.
174 | Coolant Circuit, General, High-Temperature Circuit | MS15058/04E 2018-12
TIM-ID: 0000081913 - 004
Summary of Contents for 20V4000G44F
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