2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
1998-2004 ENGINE
Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
CHARGE AIR SYSTEM WITH TURBOCHARGER
SAFETY PRECAUTIONS
CAUTION: When performing repair work, especially due to the confined conditions in
the engine compartment, pay attention to the following:
z Route all types of hoses/lines (e.g. for fuel, hydraulics, EVAP system,
coolant, refrigerant, brake fluid and vacuum) as well as electrical
wiring so that the original positions are restored.
z Ensure sufficient clearance to all moving or hot components.
Observe following if test and measuring instruments are required during a road test:
z Test and measuring instruments must be secured to rear seat and operated by an assistant from this
location.
If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an
accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is
triggered.
RULES FOR CLEANLINESS
When working on exhaust gas turbocharger, pay careful attention to the following rules:
z Thoroughly clean all unions and adjacent areas before disconnecting.
z Place parts that have been removed on a clean surface and cover. Do not use fluffy cloths!
z Carefully cover opened components or seal if repairs cannot be performed immediately.
z Only install clean components:
Only unpack replacement parts immediately prior to installation. Do not use parts that have been stored
loose (e.g. in tool boxes etc.).
z Only unpack and remove protective caps immediately prior to installation.
z Clean oil from connection pieces and hose ends when repairing.
z When the system is open:
Do not work with compressed air if this can be avoided. Do not move vehicle unless absolutely
necessary.
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
TURBOCHARGER SYSTEM COMPONENTS, REMOVING AND INSTALLING
Observe safety precautions, See CHARGE AIR SYSTEM WITH TURBOCHARGER .
Observe rules for cleanliness, See RULES FOR CLEANLINESS .
z Hoses are secured by clamps or retaining clips.
z For installing the spring-type clips, assembly tool VAS 5024 A is recommended.
z Charge air hoses and lines connections must be free of oil and grease before reinstalling.
z Do not install hoses with lubricants, moisten hose only with water, if necessary.
z Charge air system must be free of leaks.
z Fill turbocharger with engine oil through oil connection before connecting the oil supply line
z Allow the engine run for approx. 1 minute at idling speed after having installed the turbocharger and do
not do not rev up immediately. This ensures the lubrication of the turbocharger.
z Replace self-locking nuts.
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 1: Identifying VAS 5024 A Assembly Tool
Courtesy of VOLKSWAGEN OF AMERICA, INC.
Hoses with quick release coupling
NOTE: All hoses of the charge air system are secured with hose clips or with quick
release couplings. When using quick release couplings the following points
must be observed:
z Unlock quick release coupling by pulling securing clamp (arrow). Separate hose/tube without assistance
of tools.
Fig. 2: Unlocking Quick Release Coupling By Pulling Securing Clamp
Courtesy of VOLKSWAGEN OF AMERICA, INC.
z When installing check for secure fit of tabs -A-.
NOTE: The following list refers to items in Fig. 3 .
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
1. Oil supply line
z From oil filter bracket. See PART 2: DISASSEMBLING OIL FILTER BRACKET .
z Fill with engine oil through oil connection before connecting oil supply line.
z Removing and installing, See PART 3: REMOVING AND INSTALLING OIL RETURN
LINE .
2. Union nut
z Prescribed torque, see PART 3: REMOVING AND INSTALLING OIL RETURN LINE .
3. 22 N.m
4. Pipe union, 30 N.m
z Always replace
z Oil threads and contact surfaces with G 052 112 A3.
z Fill with engine oil through oil connection before connecting the oil supply line.
5. Bolt/screw
z Prescribed torque, See PART 3: REMOVING AND INSTALLING OIL RETURN LINE .
6. Banjo bolt
z Prescribed torque, See PART 3: REMOVING AND INSTALLING OIL RETURN LINE .
7. Seal
z Always replace
8. Intake manifold
9. Seal
z Always replace
z Note installed position.
10. Washer
11. 25 N.m
z Always replace
12. Bracket
z Between turbocharger and cylinder block
13. 40 N.m
z Hand-tighten all bolts first
14. Connecting line
z Air filter/turbocharger
15. Transition piece
16. Turbocharger
z Only replace as assembly
z Removing: remove right axle shaft at transmission:
See FRONT AXLE SHAFT .
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
z Allow engine to run for approx.1 minute at idling speed after installing turbocharger; to ensure oil
supply is guaranteed, do not rev up immediately
17. Seal
z Always replace
18. Pipe union, 40 N.m
19. Oil return line
z To cylinder block
20. 17 N.m
21. Connector
z For Turbocharger (TC) Vane Position Sensor -G500-
22. Vacuum hose
z to Wastegate Bypass Regulator Valve -N75-
z Vacuum hoses for connection diagram, See VACUUM HOSE CONNECTION DIAGRAM .
23. 20 N.m
z Hand-tighten all bolts first
24. 20 N.m
z Always replace
25. Heat shield
26. Front exhaust pipe
27. Bracket
z For oil return line item 1
28. 22 N.m
z Always replace
29. Connecting line
z To bypass flap for exhaust gas recirculation, see EXHAUST GAS RECIRCULATION SYSTEM
COMPONENTS, REMOVING AND INSTALLING .
30. Connecting line
z From bypass flap for exhaust gas recirculation, see EXHAUST GAS RECIRCULATION
SYSTEM COMPONENTS, REMOVING AND INSTALLING .
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 3: Exploded View Of Turbocharger & Intake Manifold Components
Courtesy of VOLKSWAGEN OF AMERICA, INC.
CHARGE AIR COOLING COMPONENTS, REMOVING AND INSTALLING
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December-27-07 12:09:04 PM Page 6 © 2005 Mitchell Repair Information Company, LLC.
2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Observe safety precautions, See CHARGE AIR SYSTEM WITH TURBOCHARGER .
Observe rules for cleanliness, See RULES FOR CLEANLINESS .
NOTE: All hoses of the charge air system are secured with hose clips or with quick
release couplings. When using quick release couplings the following points
must be observed:
z Unlock connection by pulling securing clamp (arrow).
Fig. 4: Unlocking Connection By Pulling Securing Clamp
Courtesy of VOLKSWAGEN OF AMERICA, INC.
z Remove hose/tube without assistance of tools.
z When installing check for secure fit of tabs -A-. See Fig. 4 .
z Use assembly tool VAS 5024 A to install spring-type clips.
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 5: Installing Spring-Type Clips Using VAS 5024 A Assembly Tool
Courtesy of VOLKSWAGEN OF AMERICA, INC.
NOTE: z Charge air hoses and lines connections must be free of oil and
grease before reinstalling.
z Do not install hoses with lubricants, moisten hose only with water, if
necessary.
z Charge air system must be free of leaks.
NOTE: The following list refers to items in Fig. 6 .
1. Air duct
2. Charge air cooler
z Removing and installing, See CHARGE AIR COOLER, REMOVING AND INSTALLING
3. 5 N.m
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
4. Manifold Absolute Pressure (MAP) sensor -G71- with Intake Air Temperature (IAT) sensor -G72-
5. O-ring
z Replace if damaged.
6. 10 N.m
7. Tube connection piece
8. Upper charge air pipe
9. Connecting hose
z Upper charge air pipe/intake manifold flap
10. To intake manifold flap
11. From air cleaner
12. From crankcase ventilation/ cylinder head cover
13. Rear charge air line
z With Positive Crankcase Ventilation (PCV) heating element -N79-
14. Connecting hose
z Rear charge air pipe/exhaust turbocharger
15. Bracket
16. Connecting hose
z Exhaust turbocharger/lower charge air line
17. Turbocharger
18. Lower charge air pipe
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 6: Exploded View Of Charge Air Cooler Components
Courtesy of VOLKSWAGEN OF AMERICA, INC.
VACUUM HOSE CONNECTION DIAGRAM
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
NOTE: The following list refers to items in Fig. 7 .
1. Vacuum unit
z For variable intake manifold
2. Vacuum unit
z For bypass flap for exhaust gas recirculation cooler
3. Vacuum unit
z For charge pressure control
z Integral part of turbocharger cannot be replaced
4. Intake Manifold Runner Control (IMRC) valve -N316-
z Installed position, See Fig. 8
5. Non-return valve
z White connection to distributor, item 8
6. Wastegate bypass regulator valve N75-
z Installed position, See Fig. 8
7. Exhaust Gas Recirculation (EGR) cooler switch-over valve -N345-
z Installed position, See Fig. 8
8. Distributor
9. Air cleaner
10. Vacuum union
z Between tandem pump and brake booster
z With non-return valve
11. Vacuum reservoir
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 7: Turbocharger Vacuum Hose Connection Diagram
Courtesy of VOLKSWAGEN OF AMERICA, INC.
Solenoid valves, installed position
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
The bracket with the solenoid valves is installed onto plenum chamber sealing cover right side.
The valve connectors are not coded, only the protective sleeves are different.
Fig. 8: Identifying Solenoid Valves Installed Position
Courtesy of VOLKSWAGEN OF AMERICA, INC.
Connector application
SOLENOID VALVE CONNECTOR APPLICATION
No. Component (1) Connector
1 Intake Manifold Runner Control (IMRC) Valve -N316- with straight protective sleeve
2 Wastegate Bypass Regulator Valve -N75- with rubber grommet
3 Exhaust Gas Recirculation (EGR) Cooler Switch-over Valve -N345- with angled protective sleeve
(1) To identify connectors, see Fig. 8 .
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
CHARGE AIR COOLER, REMOVING AND INSTALLING
Removing
z Remove upper charge air pipe -1- with connecting hose -2- by removing bolt/screw -3- and releasing
connector (arrow).
Fig. 9: Removing Upper Charge Air Pipe With Connecting Hose By Removing Bolt/Screw And
Releasing Connector
Courtesy of VOLKSWAGEN OF AMERICA, INC.
z Remove front turn signal, right side.
See FRONT TURN SIGNAL LIGHTS, REMOVING AND INSTALLING .
z Disconnect connector (arrow) from Manifold Absolute Pressure (MAP) sensor -G71- with Intake Air
Temperature (IAT) sensor -G72-.
z Remove front right wheelhouse liner.
See FRONT WHEEL HOUSING LINER, ASSEMBLY OVERVIEW
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 10: Disconnecting Connector From Manifold Absolute Pressure Sensor
Courtesy of VOLKSWAGEN OF AMERICA, INC.
z Remove lower charge air pipe -1-.
z Remove bolt/screw -2- and release connector (arrow).
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2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 11: Removing Lower Charge Air Pipe
Courtesy of VOLKSWAGEN OF AMERICA, INC.
z Remove center and right side sound insulation.
z Remove charge air cooler securing bolts (arrows).
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December-27-07 12:09:05 PM Page 16 © 2005 Mitchell Repair Information Company, LLC.
2003 Volkswagen New Beetle GLS
1998-2004 ENGINE Turbocharger, G-Charger - New Beetle, 1.9L 4-Cyl. - BEW
Fig. 12: Removing Charge Air Cooler Securing Bolts
Courtesy of VOLKSWAGEN OF AMERICA, INC.
Installing
Install in reverse order.
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December-27-07 12:09:05 PM Page 17 © 2005 Mitchell Repair Information Company, LLC.
