Removing and installing air cooling parts — VW
Removing and installing air cooling parts on VW: factory workshop procedure for engines AAB, ACV, AHY, AJA. Full factory text, tools and checks.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
ACV AHY AJA AJT AUF AXG AXL AYC
Engine codes ACV, AUF, AYC
Engine codes AHY, AXG, AXL => Page
21-14
Notes:
All hose connections secured by clips.
Charge air system must be free of leaks.
Charge air cooler
Air hose
Note installation position
From exhaust turbocharger
=> Page
21-6
, item
26
10 Nm
Retainer
For charge air cooler
Bonded rubber mounting
O-ring
Renew if damaged
Retaining clip
Check seated securely
Sender
▸04.99 for intake manifold temperature (G72)
05.99 ▸for intake manifold pressure (G71) with intake manifold temperature sender (G72)
Checking:
=> Repair Group 01; Self-diagnosis; Interrogating fault memory
5-Cyl. diesel engine, Mech.
Self-diagnosis
Interrogating fault memory
Connector
▸04.99 2-pin
For intake manifold temperature sender (G72)
05.99 ▸4-pin
For intake manifold pressure sender (G71) with intake manifold temperature sender (G72)
To Diesel direct injection system control unit (J248)
▸04.99
Pressure hose
Black
To exhaust gas recirculation valve
=> Page
26-14
, item
1
Engine codes AHY, AXG, AXL
Notes:
All hose connections secured by clips.
Charge air system must be free of leaks.
10 Nm
From exhaust turbocharger
Connecting hose
To intake pipe
O-ring
Renew if damaged
Retaining clip
Check seated securely
Sender
▸04.99 for intake manifold temperature (G72)
05.99 ▸for intake manifold pressure (G71) with intake manifold temperature sender (G72)
Checking:
=> Repair Group 01; Self-diagnosis; Interrogating fault memory
5-Cyl. diesel engine, Mech.
Self-diagnosis
Interrogating fault memory
Connector
▸04.99 2-pin
For intake manifold temperature sender (G72)
05.99 ▸4-pin
For intake manifold pressure sender (G71) with intake manifold temperature sender (G72)
To Diesel direct injection system control unit (J248)
▸04.99
Connecting diagram for turbocharger hose/pipe connections => Page
21-16
Pressure hose
Black
Connecting pipe
Lock carrier
Charge air cooler
Removing and installing => Page
19-24
, Removing and installing radiator and fan
Securing rubber
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
Ask about my car →Other VW procedures
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- Servicing injection pump
- Removing and installing crankshaft
- Removing and installing parts of cooling system
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- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing coolant pump · 53 torque figures
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.