Tightening Torques For Brake Hydraulics
Information
Always replace screws using the torque angle tightening procedure.
Always replace lock nuts.
Always replace screws on the brake calliper.
Screws and lock nuts are Geomet-coated and must not be greased.
Wheel bolts must never be greased.
Wheel bolts must never be reworked >> always replace wheel bolts.
Always use correct tightening torques and torque angle.
| Location | Description | Type | Basic value | Tolerance 1 | Tolerance 2 |
|---|---|---|---|---|---|
| Brake pressure line to brake master cylinder, brake hose, distributor, brake calliper and hydraulic unit | M10/M12 thread | Tightening torque | 14 Nm (10.5 ftlb.) | ||
| Mounting for intermediate piece | M6 x 14 thread | Tightening torque | 10 Nm (7.5 ftlb.) | ||
| Brake calliper to front-axle wheel carrier | M14 x 1.5 thread (always replace screws and lock nuts after removal.) | Tightening torque | 140 Nm (104 ftlb.) | ||
| Brake calliper to rear-axle wheel carrier | M12 x 1.5 thread (always replace screws and lock nuts after removal.) | Tightening torque | 85 Nm (63 ftlb.) | ||
| Bleeder screw on brake calliper | M10 x 1 thread | Tightening torque | 14 Nm (10.5 ftlb.) | ||
| Brake pressure pipe to brake calliper | M10 x 1 thread | Tightening torque | 14 Nm (10.5 ftlb.) | ||
| Cap screws for brake lines | M10 x 1 thread | Tightening torque | 14 Nm (10.5 ftlb.) | ||
| Brake booster to pedals | M8 thread | Tightening torque | 23 Nm (17 ftlb.) | ||
| Brake booster to brake master cylinder | M16 thread | Tightening torque | 49 Nm (36 ftlb.) | ||
| Vacuum pump | Tightening torque | 10 Nm (7.5 ftlb.) | |||
| Vacuum pump (electric) | Tightening torque | 10 Nm (7.5 ftlb.) | |||
| Hydraulic unit holder to body | M6 x 30 thread | Tightening torque | 10 Nm (7.5 ftlb.) | ||
| Hydraulic unit to holder | M6 x 10 thread | Tightening torque | 10 Nm (7.5 ftlb.) |