Assembly overview - brake booster/brake master cylinder (right-hand drive vehicle) — VW
Assembly overview - brake booster/brake master cylinder (right-hand drive vehicle) 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 booster/brake master cylinder (right-hand drive vehicle)
Note
Use only new brake fluid. Observe information on brake fluid reservoir!
Pedal cluster
Removing and installing
Chapter
Separating from brake booster
Chapter
.
Clipping to brake booster
Chapter
.
Hexagon bolt
25 Nm
Hexagon nut
Always renew after removing.
Self-locking
25 Nm
Seal
For brake booster.
Check for damage.
Brake booster
Removing and installing
Chapter
On petrol engines, the required vacuum is taken either from the intake manifold or generated by a mechanical vacuum pump.
In some vehicles with a petrol engine and a dual clutch gearbox, that are not equipped with a hydraulic brake servo (hydraulic brake with vacuum servo), an electric
vacuum pump for brakes
V192
is installed
Chapter
.
Diesel engines are fitted with a vacuum pump to generate the necessary vacuum pressure
Chapter
.
Functional check:
With engine switched off, depress brake pedal firmly several times to deplete vacuum in unit.
Now step on and hold brake pedal with medium pressure and start engine. If the brake booster is functioning properly, the brake pedal will be felt to go down as the servo takes effect.
If faulty renew completely (check all vacuum lines first).
Seal
Ensure proper seating.
Vacuum sender
G608
Only on vehicles equipped with hydraulic brake servo (hydraulic brake with vacuum servo).
Removing and installing
Chapter
Note
On some vehicles that are not equipped with hydraulic brake servo (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.
Vacuum hose
Fit in brake booster.
Brake master cylinder
Allocation
Electronic Parts Catalogue
.
Cannot be repaired. If faulty, renew as a complete unit.
Removing and installing
Chapter
Heat shield
Hexagon nut
50 Nm
Always renew after removing
Twelve-point bolt
25 Nm
Brake line
From secondary piston circuit of brake master cylinder to hydraulic unit.
14 Nm
Torx bolt
5 Nm
Clip
Brake light switch
F
Removing and installing
Chapter
Pin
4 Nm
Sealing plug
Moisten with brake fluid and press into brake fluid reservoir.
Brake fluid reservoir
Removing and installing
Chapter
Cap
Brake line
From primary piston circuit of brake master cylinder to hydraulic unit.
14 Nm
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.