volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

Removing and installing radiator and radiator fan > < Dismantling and assembling coolant thermostat housing
6-cyl. fuel injection engine Mechanics
Removing and installing parts of cooling system
Draining and filling cooling system
 
W00-0512

Special tools, workshop equipment, testers, measuring instruments and auxiliary items required

  • ◆ Cooling system charging unit VAS 6096
  • ◆ V.A.G 1306 Drip tray
 
W00-0495
  • ◆ VAS 5024 Assembly tool for spring-type clips

Draining

Warning !
Steam can be released when the cap is removed from the expansion tank. Cover cap with a cloth and open carefully.
  • ‒ Remove cap from coolant expansion tank.
  • ‒ Remove drain screw from coolant pipe , Pos. 25

Note:

Observe disposal regulations!

Filling

Notes:

  • ◆ Only use coolant additive G 12 in accordance with TL VW 774 F.
    Distinguishing feature: coloured violet
  • ◆ G 12 and coolant additives marked "In accordance with TL VW 774 F" prevent frost and corrosion damage, scaling and also raise boiling point of coolant. For this reason the system must be filled all year round with frost and corrosion protection additives.
  • ◆ G 12 violet (in accordance with TL VW 774 F) can be mixed with the previous coolant additives G 11 and G 12 red!
  • ◆ If radiator, heat exchanger, cylinder head or cylinder head gasket is replaced, do not reuse old coolant.
  • ◆ Assembly tool VAS 5024 or hose clip pliers V.A.G 1921 are recommended for fitting spring-type clips.
 
W00-0689
  • ◆ Protection against frost must be assured to about -25 °C (in arctic climatic countries to about -35 °C).
  • ◆ The refractometer T10007 is recommended for determining the current anti-freeze density.
  • ◆ If for climatic reasons a greater frost protection is required, the amount of G 12 can be increased, but only up to 60 % (frost protection to about -40 °C), as otherwise frost protection is reduced again and cooling effectiveness is also reduced.

Recommended mixture ratios:

Frost protection to

Anti-freeze amount1)

G 112)

Water2)

-25 °C
-35 °C

35 %
50 %

3.5 ltr.
5.0 ltr.

6.5 ltr.
5.0 ltr.

     1)     The amount of anti-freeze must not exceed 60 %; frost protection and cooling effect will decrease if amount of anti-freeze is too high.

     2)     The quantity of coolant can vary depending upon the vehicle equipment.

 
N19-0061
  • ‒ → Insert drain screw on coolant pipe -arrow- again.

With cooling system charging unit VAS 6096

  • ‒ Screw adapter V.A.G 1274/3 onto expansion tank.
  • ‒ Fill coolant circuit using cooling system charging unit VAS 6096.

=> Operating instructions for cooling system charging unit VAS 6096

Not using cooling system charging unit VAS 6096

  • ‒ Press top radiator hose down.
 
V19-0556
  • ‒ → Fill with coolant up to max. mark on expansion tank.
  • ‒ Start engine and run at idling speed and at the same time fill with coolant up to over-flow hole on expansion tank.
  • ‒ Fit expansion tank cap.
  • ‒ Run engine until radiator fan cuts-in.
  • ‒ Check coolant level and replenish as necessary. When the engine is at normal operating temperature, the coolant level must be on the max. mark, when the engine is cold, between the min. and max. marks.

Removing and installing radiator and radiator fan > < Dismantling and assembling coolant thermostat housing