Evaporative Emissions System: Service Precautions

DANGER!:

Potential dangers

Risk of explosion, poisoning and injury
Fuels are highly flammable and are poisonous if swallowed. Fuel can cause damage to the skin. Contact with gasoline fuel, for example, removes the skin's natural oils. Fuel vapors are explosive and invisible, and spread out along the floor. They are poisonous if inhaled and can cause unconsciousness in high concentrations.


Protective measures/rules for handling fuels
- Observe local national safety regulations.
- Fire, the creation of sparks, naked lights and smoking forbidden.
- Make sure that the work area is sufficiently well ventilated.
- Never drain or add fuels over workshop pits.
- Always put drained fuel into containers which are suitable and can be properly closed off.
- Immediately remove any fuel which has been spilt.

Working on the vehicle using a naked flame
(e.g. when welding etc.).
- Before carrying out such work, remove the relevant parts of the fuel system and seal off open fuel lines with plugs.


First aid measures
- Wash any fuel from skin using soap and water.
- Change out of clothing on which fuel has been spilt as soon as possible.
- If fuel is splashed into the eyes, rinse out the eyes immediately with water; consult a doctor if appropriate.









Possible dangers

Risk of accident
From vehicle starting off during starting operation (e.g. when testing compression pressure) as a result of gear engaged or when engine running and vehicles with automatic transmission as a result of selector lever position "P" or "N" not engaged (with the exception of vehicles which do not have any selector lever position "P").


Risk of injury
Severe injuries may be caused by freely rotating parts in the area of the running engine. The heat produced by the engine when it is, operating can result in severe burns if contact is made with individual, unshielded parts.

Rules of conduct/Protective measures
- As a general rule, carry out work on the running engine only if this is absolutely essential.
- Before starting the engine, apply parking brake.
- On models with manual transmission, move gearshift lever into Neutral position.
- On models with automatic transmission, move selector lever into position "P" or "N" (with the exception of vehicles which do not have any selector lever position "P").
- On models which do not have selector lever position "P", secure selector lever to prevent it being operated unintentionally.
- Wear closed and close-fitting work clothes.
- Take off any jewelry, such as chains, rings etc.
- If you have long hair, wear a suitable head cover.
- Before commencing work on the running engine, check to obtain a general picture of the positioning of parts which may be hot.
- When carrying out work when starting the engine or when engine is running, do not touch any hot and rotating parts.


NOTE: Vehicles with Stop switch:
Before commencing work on the running engine, check to obtain a general picture of the positioning of the Stop switch
If a danger exists, switch off engine with the Stop switch (S11). (On engine 904, 906, 541, 542)


First aid measures in the event of burns
- Do not rub the part of the skin affected, pour plenty of cold water over the burn and cover over with sterile bandages.
- Contact a doctor immediately.






Fig. A engine 904, 906






Fig. B engine 541, 542