Specifications; Brake Specifications; Brake Backing Plate To Steering Knuckle - Opel 1900 1973 Service Manual

1973 OPEL SERVICE MANUAL
Never use copper tubing because copper is subject to
fatigue cracking which would result in brake failure.
To make up a brake pipe assembly, proceed as fol-
lows:
1. Procure the recommended tubing and fittings of
the correct size. (Outside diameter of tubing is used
to specify size.)

SPECIFICATIONS

BRAKE SPECIFICATIONS
Torque Specifications
Use a reliable torque wrench to tighten the parts listed to insure proper
tightness without straining or distorting parts. These specifications are for
clean and lightly-lubricated threads only; dry or dirty threads produce in-
creased friction which prevents accurage
Part
Brake Hose to Front Wheel Brake Cylinder
Nut
Bolt

Brake Backing Plate to Steering Knuckle

Bolt Brake Backing'Plate to Steering Knuckle and
Steering Arm (Lower Bolts) ............................................
Backing Plate t o Rear Axle Housing
Bolt
Nut Master Cylinder Actuator Rod to Brake Pedal ..............
Wheel Brake Cylinder to Brake Backing Plate ..............
Bolt
General Specifications
Operating Mechanism, Service Brakes ....................................................................
Parking Brakes ..........................................................................................
Operation of Service Brakes Independent of
Parking Brakes ..................................................................................................................
Wheel Brakes, Service ......................................................................................
Parking. ..................................................................................................................
Brake Pedal Height Adjustment
Static Pressure in Hydraulic System When Brakes
are Released - Drum Brakes ................................................................................
Static Pressure in Hydraulic System to Rear
Brakes Only - Disc Brakes
Brake Master Cylinder (for Drum Brakes) Bore ............................................................
Wheel Cylinder Size - Rear - All .......................................................................................
Approved Hydraulic Brake ,Fluid ..........................................
Fluid Level in Reservoir ..........................................................................
Brake Drum Rebore, Max&urn Allowable Inside Diameter
Max. Allowable Out-of-Round ..........................................................................................
Rear Brake Drum Size. New ............................................................................................
2. Cut tubing to length. The correct length may be
determined by measuring the old pipe using a cord
and adding l/8" for each double lap flare.
3. Double lap flare tubing ends, using a suitable flar-
ing tool such as J-8051. Follow the instructions in-
cluded in the tool set. Make sure fittings are installed
before starting second flare.
4. Bend pipe assembly to match old pipe.
measurement of tightness.
Name
................................
......................................................................................
..................................................................................
T o r q u e
22
22
4 7
4 3
5
5
Hydraulic
Lever and Cables
Front
a n d
Rear Only
4 psi Min.
4 psi Min.
GM or Delco Supreme No. 11
Fill to "Max." Level
........................................
Yes
Rear
None
9.090
9.060