Assembly overview - brake servo/brake master cylinder from Week 22/2008, LHD — VW
Assembly overview - brake servo/brake master cylinder from Week 22/2008, LHD on VW: factory workshop procedure. 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.
Assembly overview - brake servo/brake master cylinder from Week 22/2008, LHD
Note
Use only new brake fluid. Observe information on brake fluid reservoir!
Pedal cluster
Nut
25 Nm
Always renew after removing
Seal
For brake servo.
Brake servo
On petrol engines, the required vacuum is either taken from the intake manifold or generated by a mechanical vacuum pump.
Some vehicles with a petrol engine and a dual clutch gearbox which are not equipped with a HBV (hydraulic brake with vacuum servo) have a
vacuum pump for brakes
V192
Chapter
.
Diesel engines are fitted with an vacuum pump to create the required vacuum
Chapter
.
Functional check:
With engine switched off, depress brake pedal firmly several times (to exhaust vacuum in unit).
Now step on and hold brake pedal with medium pressure and start engine. If the brake servo is functioning properly, the brake pedal will be felt to go down as the servo takes effect.
Replace completely in the event of a fault (before doing so, check brake servo vacuum system)
Chapter
Removing and installing
Chapter
Sealing ring
Brake master cylinder
Allocation
Electronic Parts Catalogue
.
Cannot be repaired. If faulty, renew as a complete unit.
Removing and installing
Chapter
Brake light switch
F
Including
brake pedal switch
F47
.
Removing and installing
Chapter
Bolt
5 Nm
Clip
Heat shield
Nut
25 Nm
Always renew after removing
Brake line
14 Nm
From secondary piston circuit of brake master cylinder to hydraulic unit.
Brake line
14 Nm
From primary piston circuit of brake master cylinder to hydraulic unit.
Sealing plug
Moisten with brake fluid and press into brake fluid reservoir.
Brake fluid reservoir
Cap with
brake fluid level warning contact
F34
Vacuum hose
Fit in brake servo.
Vacuum sender
G608
Vehicles HBS
Removing and installing
Chapter
Note
On some vehicles with no HBV (hydraulic brake with vacuum servo), a
brake servo pressure sensor
G294
is fitted.
Removing and installing
brake servo pressure sensor
G294
Chapter
.
Sealing plug
Connection for vacuum hose.
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.