Astra L4-1.8L (2009)
7. Remove the brake line from the brake master cylinder.
Remove the 2 union bolts (3).
Note: Take out the brake master cylinder horizontally. The primary piston can drop out.
8. Remove the brake master cylinder from the brake servo.
Remove the 2 nuts (1, 2).
Installation Procedure
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
Note: Insert the brake master cylinder horizontally, the pressure piston may fall out. The pressure piston must not be extracted.
1. Install the brake master cylinder to the brake servo.
Tighten the 2 master cylinder to brake servo nuts to 21 Nm (16 lb ft).
2. Install the brake line to the brake master cylinder.
Tighten the 2 brake line to master cylinder retaining bolts to 14 Nm (124 lb in).
3. For vehicles with manual transmission, install the supply line for the clutch master cylinder to the brake fluid reservoir.