Assembly overview - brake servo/brake master cylinder (left-hand drive vehicle) — VW
Assembly overview - brake servo/brake master cylinder (left-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 servo/brake master cylinder (left-hand drive vehicle)
Note
Use only new brake fluid. Observe information on brake fluid reservoir!
Pedal cluster
Removing and installing
Chapter
Nut
25 Nm
Renew after removing
Observe tightening sequence
Anchor
.
Seal
For brake servo.
Brake servo
On petrol engines, the required vacuum is either taken from the intake manifold or generated by a vacuum pump.
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.
If faulty renew completely (check all vacuum lines first).
Removing and installing (vehicles with 5-cyl. petrol engine)
Chapter
Removing and installing (vehicles with 4-cyl. petrol engine)
Chapter
Removing and installing (vehicles with 4-cyl. diesel engine)
Chapter
Allocation
Electronic Parts Catalogue
.
Check vacuum system if there are any brake servo malfunctions
Chapter
Sealing ring
Brake master cylinder
Allocation
Electronic Parts Catalogue
.
Cannot be repaired. If faulty, renew as a complete unit.
Removing and installing (vehicles with 5-cyl. petrol engine)
Chapter
Removing and installing (vehicles with 4-cyl. petrol engine)
Chapter
Removing and installing (vehicles with 4-cyl. diesel engine)
Chapter
Nut
25 Nm
Renew after removing
Bolt
5 Nm
Brake light switch
F
Including
brake pedal switch
F47
.
Removing and installing
Chapter
Brake line
14 Nm
Brake master cylinder/secondary piston circuit to
ABS hydraulic unit
N55
.
Identification: ∅ 6.5 mm and flare nut with thread M 12 x 1
Brake line
14 Nm
From primary piston circuit of brake master cylinder to
ABS hydraulic unit
N55
.
Identification: ∅ 6.5 mm and flare nut with thread M 12 x 1
Sealing plug
Connection for vacuum hose.
Sealing plug
Moisten with brake fluid and press into brake fluid reservoir.
Securing pin
Push to the right to remove brake fluid reservoir
Brake fluid reservoir
Brake fluid
Chapter
Removing and installing
Chapter
Cap
With
brake fluid level warning contact
F34
Vacuum line
Fit in brake servo
Allocation
Electronic Parts Catalogue
.
If any brake servo malfunctions have occurred, check this part
Chapter
Vacuum sender
G608
Vacuum sender
G608
in the case of vehicles with HBV (hydraulic brake with vacuum servo)
Removing and installing
vacuum sender
G608
Chapter
Allocation
Electronic Parts Catalogue
.
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
- Removing engine · 41 torque figures
- Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing coolant pump · 53 torque figures
- Removing and installing alternator, 1.9 l TDI engine with no DSG
- Renewing left flange shaft oil seal with manual gearbox installed · 1 torque figures
- Removing and installing fuel gauge sender 2 -G169- – VW BKC · 1 torque figures
- Renewing reservoir of motor/pump unit (TRW) – VW Polo 9N
- Removing and installing tailgate/boot lid handle (Sedan) · 1 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.