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Volkswagen Fox (2004 year). Manual - part 51

(VWB) - ou - T 10007-

Note

The exact value for the following checks may be read in the light-

dark limit. To better see the light-dark limit, use a dropper/pipette

to put a water drop on the glass. Now the light-dark limit may be

easily recognized by the “WATERLINE”.

– Check the concentration of antifreeze additive with the Re‐

fractometer for cooling system fluid analysis -EQ 7093 (VWB)

- ou - T 10007- (follow the instruction manual).

The scale -1- of the refractometer is related to coolant additives -

G 12- and -G 11-.
The scale -2- is related to the cooling additive -G 13-.

Note

♦

The antifreeze protection must be guaranteed in approximate‐

ly -13 ° F (in Arctic climate countries in approximately

-31.00 ?).

♦

Due to climatic reasons, a higher antifreeze protection is nec‐

essary, so the percentage of G 12 may be increased, but only

up to 60% (antifreeze protection to approximately - 40º F), be‐

cause the antifreeze protection can be reduced again and,

additionally, the cooling action is worsened.

– When the antifreeze protection is too weak, drain the differ‐

ence volume mentioned in the antifreeze protection table

⇒ page 77

and replace with the cooling additive -G 12- ac‐

cording to TL VW 774 F.

WARNING

♦ Follow the rules for disposal!

4.30.2

Antifreeze table

Antifreeze protection up to º F Difference quantity in liters

14)

Actual value

12)

Nominal value

13)

-25

3,0

-35

3,5

-5

-25

2,5

-35

3,5

FOX 2004 ➤

4. Service descriptions

Nominal value

-10

-25

2,0

-35

3,0

-15

-25

1,5

-35

2,5

-20

-25

1,0

-35

2,5

-25

-35

2,0

-30

-35

1,0

-35

-40

0,5

12) Actual value: it is the result achieved when measuring the concentration of

coolant on the measured vehicle.
13) Nominal value: is the value applied to the locality where the vehicle is being

used. For example, in Brazil, the nominal value is -25° C; in arctic countries, the

value is -35° C.
14) Difference quantity in liters: is the amount removed from the cooling system

and replenished in the same quantity only with additive.

– After the test run, you must check the antifreeze additive con‐

centration in the cooling system again.

4.30.3

Check the coolant level and, if necessa‐

ry, replenish the cooling system

– Check the coolant level in the reservoir with the cold engine.
♦ Delivery inspection: With cold engine, the coolant level must

be in the middle area between the maximum and minimum

reservoir markings. If it is above the middle area, remove the

excess until it reaches the level in the middle area between

the maximum and minimum reservoir markings. With the heat‐

ed engine, the coolant may reach the maximum reservoir

marking.

♦ Inspection service: With cold engine, the coolant level can be

between the reservoir maximum marking and middle area. If

it is above the middle area, remove the excess until it reaches

the level in the middle area between the maximum and mini‐

mum reservoir markings. With the heated engine, the coolant

may reach the maximum reservoir marking.

– If during the inspection service the coolant level is below the

minimum level marking, it is necessary to replenish the system

according to the specified mixture ratio until the middle area

between the maximum and minimum reservoir markings.

Note

In case of loss of fluid not caused by consumption, you must de‐

termine and eliminate the cause (repair measure).

4.30.4

Mixture ratio

Antifreeze protec‐

tion up to

Coolant additive

Water

-13.00 ?

approx. 40%

approx. 60 %

-31.00 ?

approx. 50 %

-40.00 ?

approx. 60 %

approx. 40%

FOX 2004 ➤

4. Service descriptions

♦

The coolant additive -G12- prevents damage from corrosion

and freezing, limestone build-up and also increases the boiling

point. For these reasons, the cooling system must always be

replenished with antifreeze and anti-corrosion agent through‐

out the year.

♦

Specially in tropical countries, the coolant ensures the engine

operation by increasing the boiling point under high engine

charges.

♦

The concentration of coolant cannot be diluted in water, even

during hot seasons or in hot countries. The cooling additive

percentage must be at least 40%.

4.31

Spark plugs - replace

Special tools and workshop equipment required
♦ Spark plug wrench -3122B-

♦ Assembly tool -T10029-

♦ Torque wrench - 5 to 50 Nm (fit. 1/2") -VAG 1331-

FOX 2004 ➤

4. Service descriptions

Engine identification letters BAH and

BLH

– Remove the crankcase air vent hose -1- from the air filter case.
– Remove the air filter case from the supports and the butterfly

valve command unit -arrows- and remove the air filter case.

Carry out work sequence as follows:

– Loosen the spark plug connectors -arrows- with the Assembly

tool -T10029- .

– Remove the spark plugs with the Spark plug wrench -3122B- .
– Install the new spark plugs with the Spark plug wrench -3122B-

and the Torque wrench - 5 to 50 Nm (enc. 1/2") -VAG 1331- .

Tightening torque: 30 Nm.

Note

♦

The air filter case assembly is initially carried out by fitting the

butterfly valve command unit nozzle, side supports, and then

the front supports.

♦

Apply neutral soap or coolant additive to the fastening bear‐

ings and to the butterfly valve control unit nozzle packing for

easier installation.

WARNING

♦ Follow the rules for disposal!

– Connect the spark plug connectors.
– Install the air filter case.

4.31.2

Engine identification letters AQZ and

BKR

– Remove the crankcase venting hose -1- from the air filter case.

FOX 2004 ➤

4. Service descriptions

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