1 - Upper timing belt casing
2 - main toothed belt
3 - connecting toothed belt
4 — bolt, 10 Nm + 90° (¼ turn) in tightening direction
Always replace the bolt with a new one.
Tighten in sequence from outside to inside.
5 - high voltage wire guide, 5 Nm
Only for AUA/AUB engine.
6 - connecting hose
Only for BBY/BBZ engine.
7 - bolts, 10 Nm
8 - check valve
Only for BBY/BBZ engine.
9 - hose to the air filter
Only for BBY/BBZ engine.
10 — camshaft housing
Remove any remaining old sealant.
Before installation, apply sealant VW-D188003A1, see below figure N15-0075. When installing, carefully move vertically from top to bottom and place on studs and guide pins.
11 — bracket
12 - guide pins
13 - push lever with roller
Check the roller bearing for ease of movement. Lubricate the working surface. When installing, secure it to the compensating support element using a locking bracket.
14 - support element
Do not swap positions during installation.
With hydraulic valve drive clearance compensator. Lubricate the working surface.
15 — cylinder head mounting bolt
Always replace the bolt with a new one.
The original information is posted on the website VWmanual
Tighten the cylinder head bolts in three stages. In each stage, tighten the bolts in sequence from 1 to 10.
Reception 1: 30 Nm
Step 2: Tighten in the tightening direction by 90 (¼ turn)
Step 3: Tighten in the tightening direction by 90 (¼ turn)
16 — cylinder head gasket
Always replace with a new one. After replacement, change all coolant.
17 — cylinder head
18 — tension roller of the connecting toothed belt
19 — bolt, 20 Nm
20 — lower toothed belt casing
21 — eye
Sealing surface of the camshaft housing
Apply sealant thinly and evenly to the clean sealing surface of the camshaft housing (highlighted in gray). Caution: When applying a thick layer of sealant, it will get into the oil channels, causing damage to the engine.
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