Volkswagen Golf Variant / Jetta. Manual - part 426

 

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Volkswagen Golf Variant / Jetta. Manual - part 426

 

 

adjusting lever is on the lower »stop«.

– Counter-hold lock nut -B- and turn securing nut -A- on the

control rod against the adjustment lever. Tighten slightly with

the Ring Wrench 10x12mm - T10423- .

– Release the vacuum from the vacuum diaphragm.
– Observe the lowest value of the measured value block. With

no pressure, a value of 3.30 to 3.90 V must be set.

– Attach the Actuator Socket - 10mm - T10422AA- , counterhold

the lock nut -B- with the Ring Wrench 10x12mm - T10423- and

tighten the securing nut -A-.

Caution

Generate a vacuum of 0.75 ± 0.05 bar (10.87 ± 0.72 psi) at the

vacuum diaphragm to ensure that the adjustment lever is at the

»stop«. A voltage of 0.760 V must be set in this process.

Voltage Value OK.

– Manually press the locking plate onto the control rod and turn

it 90° in the direction of -arrow-.

– Seal the control rod/nut connection with sealing wax from the

replacement part kit.

Voltage Value Not OK.

– Counterhold the lock nut -B-, loosen the control rod nut -A- and

correct the value by rotating the lock nut -B-.

– Counter-hold the lock nut -B-, counter-rotate the nut -A-, and

tighten with the Actuator Socket - 10mm - T10422AA- .

– Manually press the locking plate onto the control rod and turn

it 90° in the direction of -arrow-.

– Seal the control rod/nut connection with sealing wax from the

replacement part kit.

Continuation

3. Turbocharger    

287

line connection on the cylinder head and tighten.

– Remove the cap on the turbocharger.
– Reassemble the engine.
– Start the engine and delete the DTC memory.
– Check the adjustment as follows:
Selecting Diagnosis Function:
– Press the “006 - basic setting” button on the display.
– Enter the measured value block “120” via the 10-key keyboard

and confirm the input with the “Q” button.

– Press the “activate” button on the lower half of the screen.
– Observe the value in the lower window. It must fluctuate be‐

tween 0.65-0.85 V and 3.30-3.90 V (pressure cell alternates

between the two end positions).

If the voltage values are OK:
– End the basic setting.

288

Charge Air System

⇒ “4.1 General Information”, page 289
⇒ “4.2 Overview - Charge Air Cooler Components”, page 290
⇒ “4.3 Connector Coupling Between Charge Air Cooler and Con‐

necting Hose, Disassembling and Assembling”, page 291
⇒ “4.4 Charge Air System, Checking for Leaks”, page 293
⇒ “4.5 Vacuum Hose Connection Diagram”, page 295
⇒ “4.6 Vacuum Hose Connection Diagram, Engine Codes CBDA,

CBDB, CEGA”, page 296
⇒ “4.7 Vacuum System, Checking”, page 297

4.1

General Information

Note

Charge air system must be properly sealed.

All hose connections for the charge air system are secured by

screw-type clamps, spring-type clamps or by connector cou‐

plings. Be sure to follow the assembly guidelines when instal‐

ling the connectors. Refer to

⇒ “4.3 Connector Coupling Between Charge Air Cooler and

Connecting Hose, Disassembling and Assembling”,

page 291

 .

Tighten the screw-type clamps by hand - using a screwdriver

is not permitted.

Hose Clip Pliers - VAS6362- or the Hose Clip Pliers -

VAS6340- are recommended for installing spring clips.

Caution

♦ Follow the safety precautions when working on the charge

air system and turbocharger. Refer to

⇒ “1 Safety Precautions when Working on Charge Air

System And Turbocharger”, page 268

 .

♦ Pay attention to the guidelines for clean working condi‐

tions. Refer to

⇒ “2 Guidelines for Clean Working Conditions”,

page 269

 .

Always pay attention to these instructions before and during

work.

4. Charge Air System    

289

Overview - Charge Air Cooler Compo‐

nents

Caution

♦ Follow the safety precautions when working on the charge

air system and turbocharger. Refer to

⇒ “1 Safety Precautions when Working on Charge Air

System And Turbocharger”, page 268

 .

♦ Pay attention to the guidelines for clean working condi‐

tions. Refer to

⇒ “2 Guidelines for Clean Working Conditions”,

page 269

 .

Always pay attention to these instructions before and during

work.

1 - Bolt

❑ 5 Nm

2 - Bearing

❑ For the charge air cooler

3 - Charge Air Cooler

❑ To remove, bring the

lock carrier into the serv‐

ice position. Refer to ⇒ 

50 ; Lock Carrier; Serv‐

ice Position .

4 - Connecting Hose

❑ »Cold« side, bottom
❑ Check for secure fit
❑ Replace the seal if it is

damaged or if there are

leaks.

❑ Connector Coupling Be‐

tween Charge Air Cool‐

er and Connecting

Hose, Disassembling

and Assembling. Refer

to

⇒ “4.3 Connector Cou‐

pling Between Charge

Air Cooler and Connect‐

ing Hose, Disassem‐

bling and Assembling”,

page 291

5 - Screw Clamp

❑ 5 Nm

6 - To the Throttle Valve Con‐

trol Module - J338-

❑ -item 9-

⇒ Item 9 (page 332)

7 - Connecting Hose

❑ »Cold« side, top
❑ Check for secure fit

290

 

 

 

 

 

 

 

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