Checking the level and topping up the coolant Volkswagen Transporter T4 1990 - 2003

Parts and consumables:

• Cloth gloves
• Coolant (VW TL-774G, G12++)
• rags

Notes:

Checking the coolant level in the expansion tank of the cooling system should be carried out at each inspection of the car before driving and always in case of engine overheating and the associated release of fluid from the system. Its sharp decrease or increase should be a signal for an immediate check of the engine cooling system. 

Check with your vehicle dealer for the brand of fluid used in your vehicle. Do not mix liquids of different colors and different manufacturers. If you do not know the brand of the liquid filled in, and the liquid needs to be topped up, replace all the liquid in the cooling system. Only use products from trusted manufacturers. Remember that the use of poor quality coolant leads to costly engine repairs.

The cooling system is pressurized, so before adding coolant,  allow the engine to cool for at least one hour after shutting it down.

Volkswagen Transporter T4 coolant is  toxic, so be careful when handling it. 

The  cooling system may be topped up with G12 or concentrate marked "according to TL VW774D". The G12 concentrate is red in color.

1.  Park the vehicle on level ground, allow the engine to cool, and  open the hood.  The coolant reservoir is installed in the center of the engine compartment near the bulkhead (next to the brake fluid reservoir).

2.  Visually check the Volkswagen Transporter T4 coolant level in the reservoir. When the engine is cold (liquid temperature is approximately + 20 ° C), it should be between the MAX  (maximum) and  MIN  (minimum) marks  on the Volkswagen Transporter T4 expansion tank. When the engine is warm, the fluid level may be slightly above the MAX mark.  If the fluid level is at or below the MIN mark, coolant must be added.

3.  To add coolant, first turn counterclockwise and remove the cap from the expansion tank.

Note:

When opening the cap, turn only slightly at first to relieve excess pressure. Then unscrew it all the way and remove the cover.

4.  Add antifreeze Volkswagen Transporter T4, slightly not bringing the level to the MAX mark. 

Warning:

Do not fill the fluid reservoir above the MAX mark, as the fluid volume increases when the engine is running. When starting the engine, the expansion tank cap must be closed.

Coolant that has fallen on engine parts or paintwork must be removed with a rag.

5.  Close the cap of the coolant expansion tank tightly by turning it clockwise until it stops. Wipe off the spilled Volkswagen Transporter T4 with a rag.

Warning:

If the coolant level is too low, it may be due to an incorrectly screwed cap on the expansion tank.

Notes: 

When topping up is necessary, use only coolant grades that are approved by the manufacturer's technical departments and provide freeze protection and anti-corrosion protection of the engine cooling system.

If the coolant that you just filled in suddenly suddenly turned brown quickly, it means that you were sold a fake, in which they "forgot" to add corrosion inhibitors. Replace the fluid as soon as possible before it has had time to corrode the cooling system.

If the coolant level in the expansion tank is constantly decreasing, then the engine cooling system is most likely leaking, so it is very important to immediately check its tightness and repair the malfunction.

In order to be able to continue the trip, it is also possible, especially in summer, to top up with clean water. However, after this, it is necessary to bring the concentration of antifreeze to the required level as soon as possible. 

The article is missing:

• Photo of parts and consumables
• High-quality repair photos

Source: carpedia.club