Opel 1900 1973, Service Manual, Page: 291 / 625

32 1973 OPEL SERVICE MANUAL
Never use copper tubing because copper is subject to
fatigue cracking which would result in brake failure. 2. Cut tubing to length. The correct length may be
determined by measuring the old pipe using a cord
and adding
for each double lap flare.
To make up a brake pipe assembly, proceed as
lows: 3. Double lap flare tubing ends, using a suitable
ing tool such as J-8051. Follow the instructions in-
cluded in the tool set. Make sure fittings are installed
1. Procure the recommended tubing and fittings of
the correct size. (Outside diameter of tubing is used
to specify size.)
before starting second flare.
4. Bend pipe assembly to match old pipe.
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
measurement of tightness.
Part
Name T o r q u e
Nut
Bolt
Brake Hose to Front Wheel Brake Cylinder
Brake Backing Plate to Steering Knuckle
Bolts)
22
22
Bolt Brake to Steering Knuckle and
Steering Arm (Lower Bolts) ............................................
Bolt
Backing Plate t o Rear Axle Housing ................................
Nut Master Cylinder Actuator Rod to Brake Pedal ..............
Bolt
Wheel Brake Cylinder to Brake Backing Plate ..............
General Specifications
4 7
4 3
5
5
Operating Mechanism, Service Brakes ....................................................................
Hydraulic
Parking Brakes .......................................................................................... Lever and Cables
Operation of Service Brakes Independent of
Parking Brakes .................................................................................................................. Yes
Wheel Brakes, Service ...................................................................................... Front a n d Rear
Parking. .................................................................................................................. Rear Only
Brake
Pedal Height Adjustment ...................................................................................... None
Static Pressure in Hydraulic System When Brakes
are Released Drum Brakes ................................................................................ 4 psi Min.
Static Pressure in Hydraulic System to Rear
Brakes Only Disc Brakes ..................................................................................
4 psi Min.
Brake Master Cylinder (for Drum Brakes) Bore ............................................................
Wheel Cylinder Size Rear All .......................................................................................
Approved Hydraulic Brake .......................................... GM or Delco Supreme No. 11
Fluid Level in Reservoir ..........................................................................
Fill to “Max.” Level
Brake Drum Allowable Inside Diameter ........................................
9.090
Max. Allowable Out-of-Round ..........................................................................................
Rear Brake Drum Size. New ............................................................................................
9.060