Volkswagen Golf Variant / Jetta. Manual - part 439

 

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Volkswagen Golf Variant / Jetta. Manual - part 439

 

 

– Open the clamp -4- and remove the hose from the Mass Air‐

flow Sensor - G70- .

– Remove the entire air filter housing.
Installing
Install in reverse order of removal.

3.16

Air Filter Element, Removing and Instal‐

ling

Special tools and workshop equipment required
♦ Torque Wrench 1783 - 2-10Nm - VAG1783-

DANGER!

♦ Follow the safety precautions when working on the diesel

direct fuel injection system. Refer to

⇒ “1 Safety Precautions when Working on Diesel Direct

Fuel Injection System”, page 303

 .

♦ Pay attention to the guidelines for clean working condi‐

tions. Refer to

⇒ “2 Guidelines for Clean Working Conditions”,

page 305

 .

Always pay attention to these instructions before and during

work.

3. Diesel Direct Injection System    

339

section.

– Lift up the air filter housing upper section and remove the air

filter element.

Installing:
Install in reverse order of removal. Note the following:
• If the air filter element is very dirty or soaked, dirt particles or

moisture may have contaminated the Mass Airflow Sensor -

G70- and may be causing false mass airflow values. This

results in reduced performance, since a lower injection quan‐

tity is calculated.

• Always use Original air filter insert. Refer to Parts Catalog.
• Follow all waste disposal regulations!
• The air filter housing must be clean.
Note the following when cleaning air filter housing with com‐

pressed air:
• To prevent malfunctions, cover critical air-flow engine compo‐

nents such as the Mass Airflow Sensor - G70- , air duct pipes

etc. with a clean cloth.

– Check the Mass Airflow Sensor - G70- and the intake hose

(clean air side) for contamination.

– Check the intake duct up to the air filter insert for contamina‐

tion. If any contaminants are discovered, clean the air filter

housing upper and lower section of salt residue, dirt and

leaves. Wash or vacuum if necessary.

– Remove and clean the snow screen -1-.

– Clean the water drain -arrow- and the lower section of the air

filter housing.

– Make sure that air filter element is properly centered when

placed into the mounting of the lower section of the air filter

housing.

– Place upper section of air filter housing on to lower section or

air filter housing carefully and without using excessive force.

When doing this, make sure that upper section of air filter

housing is not placed tilted on the air filter element (pay atten‐

tion to sealing lip of air filter element).

340

upper section -arrows-: 2 Nm.

3.17

Mass Airflow Sensor - G70- , Removing

and Installing

Special tools and workshop equipment required
♦ Torque Wrench 1783 - 2-10Nm - VAG1783-
♦ Hose Clip Pliers - VAS6362-

DANGER!

♦ Follow the safety precautions when working on the diesel

direct fuel injection system. Refer to

⇒ “1 Safety Precautions when Working on Diesel Direct

Fuel Injection System”, page 303

 .

♦ Pay attention to the guidelines for clean working condi‐

tions. Refer to

⇒ “2 Guidelines for Clean Working Conditions”,

page 305

 .

Always pay attention to these instructions before and during

work.

Removing:
– Disconnect the connector -1- from the Mass Airflow Sensor -

G70- .

3. Diesel Direct Injection System    

341

and disconnect the intake hose from the Mass Airflow Sensor

- G70- .

– Remove both bolts from the Mass Airflow Sensor - G70- and

carefully remove the Mass Airflow Sensor - G70- from the

guide on the air filter housing upper section.

Installing:
Install in reverse order of removal. Note the following:
• Replace the O-ring if damaged.
• If the air filter element is very dirty or soaked, dirt particles or

moisture may have contaminated the Mass Airflow Sensor -

G70- and may be causing false mass airflow values. This

results in reduced performance, since a lower injection quan‐

tity is calculated.

• Always use Original air filter insert. Refer to Parts Catalog.
– Check the Mass Airflow Sensor - G70- and the intake hose

(clean air side) for contamination.

– Check the intake duct up to the air filter insert for contamina‐

tion. If any contaminants are discovered, clean the air filter

housing upper and lower section of salt residue, dirt and

leaves. Wash or vacuum if necessary. Air Filter Element, Re‐

moving and installing. Refer to

⇒ “3.16 Air Filter Element, Removing and Installing”,

page 339

 .

• Tightening specification for bolts on the Mass Airflow Sensor

- G70- : 3.5 Nm

342

 

 

 

 

 

 

 

Content   ..  437  438  439  440   ..