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Omega A (1986-1993) Omega B (1993-1999) Omega B2 (1999-2003)
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  • Omega
  • Omega B
  • Chassis
  • Brake system
  • Technical specifications

Technical specifications (Opel Omega B)

            0

System type
Front and rear disc brakes, sliding front calipers, fixed rear calipers, dual hydraulic circuit, vacuum booster. ABS system. Cable drive of the handbrake on rear wheels.
Vacuum booster diameter
200/255 mm
Length of the piston rod of the vacuum booster
106±0.5 mm
Amount of brake fluid
0.5 l
Brake pedal travel before brake lights come on
155 mm
Master brake cylinder, diameter
– models produced before 1998:
• 4-cylinder models engine
23.81/ 20.64 mm
• 6-cylinder models engine
25.40/ 20.64 mm
– models produced since 1998:
• all models
25.40 mm
Front brakes
Brake disc diameter:
– models produced before 1998:
• 4-cylinder models engine
286 mm
• 6-cylinder models engine
296 mm
– models produced since 1998:
• all models
296 mm
Thickness of the new brake disc:
– models produced before 1998:
• 4-cylinder models engine
24 mm
• 6-cylinder models engine
28 mm
– models produced since 1998:
• all models
28 mm
Minimum thickness of brake disc after processing:
– models produced before 1998:
• 4-cylinder models engine
22.5 mm
• 6-cylinder models engine
26.5 mm
– models produced since 1998:
• all models
26.5 mm
Minimum permissible brake disc thickness:
– models produced before 1998:
• 4-cylinder models engine
21 mm
• 6-cylinder models engine
25 mm
– models produced since 1998:
• all models
25 mm
Maximum difference in disc thickness
0.01 mm
Maximum allowable disc runout
0.12 mm
Maximum allowable scratch depth
0.4 mm
Brake lining thickness:
- new
17.50.6 mm
- wear limit
8.0 mm
Caliper piston diameter:
– models produced before 1998:
• 4-cylinder models engine
54 mm
• 6-cylinder models engine
54 mm
– models produced since 1998:
• all models
57 mm
Rear brakes
Brake disc diameter (new)
286 mm
Brake disc thickness:
- new
12.0 mm
- minimum (after processing)
11.0 mm
Wear limit
10.0 mm
Maximum allowable difference in disc thickness
0.01 mm
Maximum allowable runout
0.12 mm
Caliper piston diameter
40.0 mm
Brake lining thickness:
- new
17.0 mm
- wear limit
6.0 mm
Minimum permissible thickness of brake friction material handbrake shoe
1.0 mm
Handbrake drum diameter:
- new
160.0 mm
- wear limit
161.0 mm


Tightening torques, Nm



Fastening the ABS electronic control unit to the modulator
8
Fastening the ABS modulator to the body
10
Modulator mounting nuts
8
ABS sensor mounting screws
8
Brake disc lock screw
4
Nuts/bolts for brake pipe connections
16
Fastening the brake pedal bracket to the body
20
Brake pedal axle mount
18
Bleed valve
9
Brake hose connection bolt on caliper
40
Caliper pins
30
Bolts for securing the caliper mounting bracket to the pivot trunnion:*
- stage 1
95
- stage 2
Turn it 30 – 45°
Handbrake lever
20
Front Brake Master Cylinder Mount
22
Fastening the master brake cylinder to the vacuum booster
22
Rear Brake Caliper Mounting Bolts
80
Wheel mounting bolts
110
Vacuum booster mount
21

* Use new bolts.


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Checking the article: Fedorova Varvara

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Opel Omega B: Brake system
Next articles

Front brake linings
Rear brake linings
Front brake caliper
Rear brake caliper
Brake disc — removal and installation
Handbrake brake pads


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Omega B2 (1999-2003) 
  • General information
  • User manual
  • Maintenance
  • Troubleshooting
  • Power unit
  • Petrol 4-cylinder
  • Petrol 6-cylinder
  • Engine overhaul
  • Diesel engines 2.0 l
  • Diesel engines 2.5 l
  • Cooling and heating
  • Injection system (gasoline)
  • Fuel system (diesel)
  • Fuel system
  • Exhaust system
  • Ignition system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Main gear and shafts
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Body elements
  • Electrical equipment
  • Equipment and devices
  • Electrical circuits
Omega B (1993-1999) 
  • General information
  • User manual
  • Tips for the car owner
  • Maintenance (gasoline)
  • Maintenance (diesel)
  • Power unit
  • Petrol engine SOHC 2.0 l
  • Petrol engine DOHC 2.0 l
  • Petrol engines 2.5 and 3.0 l
  • Repair of gasoline engines
  • Diesel engine 2.0 l
  • Diesel engine repair 2.0 l
  • Diesel engine 2.5 l
  • Cooling and heating
  • Power system (petrol)
  • Emission reduction
  • Fuel system (diesel 2.0 l)
  • Fuel system (diesel 2.5 l)
  • Launch system
  • Ignition system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Drive shafts
  • Chassis
  • Brake system
  • Wheel suspension
  • Steering
  • Body
  • Exterior
  • Interior
  • Doors and windows
  • Electrical equipment
  • Equipment and devices
  • Wiring diagrams (early)
  • Wiring diagrams (late)
Omega A (1986-1993) 
  • General information
  • User manual
  • Maintenance
  • Changes and additions
  • Troubleshooting
  • Power unit
  • Gasoline engines
  • Diesel engines
  • Cooling system
  • Fuel system (gasoline)
  • Fuel system (diesel)
  • Ignition system
  • Transmission
  • Clutch
  • Mechanical gearbox
  • Automatic gearbox
  • Cardan shaft
  • Drive shafts
  • Chassis
  • Brake system
  • Car suspension
  • Steering
  • Body
  • Exterior
  • Interior
  • Electrical equipment
  • Power devices
  • Lighting and appliances
  • Electrical circuits
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