Cylinder head - disassemble and assemble — VW
Cylinder head - disassemble and assemble on VW: factory workshop procedure for engines 1Y, AGU, ASW, AUQ. Full factory text, tools and checks.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📐 14 workshop diagrams for 1Y
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
VW
Gol, Parati, Saveiro
1999
Gol, Parati, Saveiro
2006
Engine
4 - Cyl. diesel engine
Edition
03.2009
Cylinder head - disassemble and assemble
Check compression
Chapter
Note
When a replacement cylinder head is fitted, all the contact surfaces between support elements and the valve seats should be lubricated before assembly of the cylinder head.
The plastic bases included for the protection of open valves should only be removed shortly before assembling the cylinder head.
After replacing the cylinder head, the cooling fluid should be replaced.
Expansion clip
Upper cover of mechanical distribution system
Toothed belt
Mark direction of movement before removing
Check wear
Do not bend
Remove and install, adjust
Chapter
45 Nm
Valve camshaft gear
Remove the hub from the camshaft by a blow with a hammer and punch through the opening in the mechanical distribution rear cover
10 Nm
Mechanical distribution back cover
Cylinder head cover
Oil filler cap
Renew gasket, if damaged
Sealing ring, upper
Replace if damaged
Washer
Cover
Brace
Sump pressure regulating valve
For sump ventilation
Sealing
Replace if damaged
Cylinder head joint seal
Replace if damaged
Before installing, smear with
D 454 300 A2
the contact area between the bearings/cylinder head
Sump ventilation
Cylinder head securing bolt
Replace
Loosen and tighten in the proper order
Chapter
Seal
Replace
25 Nm
Lower sealing tube
Injection tubing
Tighten with 25 Nm
Remove with the
Open wrench
3035
Always remove the full set of tubing
Do not modify the curvature
Cylinder head
Check for warping
Fig.
Remove and install
Chapter
After replacing, change all coolant
Injection valves
Remove and install
Chapter
Incandescent plugs
Tighten with 25 Nm
Check
Chapter
Support for engine fixing/holding
Cylinder head gasket
Replace
Observe identification
Fig.
After replacing, change all coolant
20 Nm
Pulley
Not applicable
Tensioner pulley
Check
Chapter
Adjust the toothed belt
Chapter
Check if the cylinder head is warped
Maximum allowable warping: 0.1 mm
Note
It is not allowed to machine the cylinder head
Identification of cylinder head gasket
Part number =
arrow 1
Control code =
arrow 2
not significant
Slot/hole =
arrow 3
Note
The cylinder head gasket is installed according to the piston protrusion. When replacing a gasket, replace it with a gasket with the same identification.
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.
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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.