is there a special way of bleeding the rears when having
installed a new pedal assembly, the front procedure worked
fine , however nothing came out of the rear nipples , even
when fully removed. The pump appears to work and continues
on for several seconds after the ign is turned off. I also
have a wire missing a home, it is in that pump ( rhs near
starter relay/ abs pump area, the car had an engine fire and
all the wiring I have replaced myself with harness’s from
another car. The wire ( kind of thin )I have not found a
home for is in a black sheath, about 20 inches long, the
colour under the sheath is brown with a black stripe , help…–
Pacific Jaguar Enthusiasts Group 44, Canada.
Pitt Meadows, BC, Canada
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In reply to a message from Jagart sent Fri 11 Apr 2008:
I assume you have a Teves ABS system!
The pump turns on when the pressure in the accumulator drops to
about 1200 PSI and turns off at 1800 PSI +/-. This drop in pressure
should be good for about 10 applications of the brakes in normal
operation. It should never run continuously.
You state:
‘‘The pump appears to work and continues
on for several seconds after the ign is turned off.’’
This is puzzling since the pump shouldn’t be active when the
ignition is turned off!!
The questions raised by this comment are many:
Is the Pump feed blocked?
Is the accumulator charged?
Is the accumulator damaged by the heat?
Is the high pressure switch functional?
Did you press on the brake pedal when trying to bleed the rear
brakes with the ignition on and the pump functioning?
Crack the fitting feeding the rear brakes at the accumulator area
prior to the solenoids and see if fluid is available.
I too had a fire. The documentation is skimpy. The amount of labor
is incalculable if you restore it to prefire conditions.
At 01:08 PM 11/04/2008, you wrote:>is there a special way of bleeding the rears when having
installed a new pedal assembly, the front procedure worked
fine , however nothing came out of the rear nipples , even
when fully removed. The pump appears to work and continues
on for several seconds after the ign is turned off. I also
have a wire missing a home, it is in that pump ( rhs near
starter relay/ abs pump area, the car had an engine fire and
all the wiring I have replaced myself with harness’s from
another car. The wire ( kind of thin )I have not found a
home for is in a black sheath, about 20 inches long, the
colour under the sheath is brown with a black stripe , help…
Pacific Jaguar Enthusiasts Group 44, Canada.
Brown/black on my coupe is for the field winding of the alternator.
That gives you a red IGNITION light when you switch on the ignition.
When the engine runs and the alternator is producing voltage the light
goes off.
If you have an original Lucas or other OEM alternator there should be
an “F” terminal to connect to.
There are alternators with different types of internal regulator and
you might not be able to use that brown/black wire.
Perhaps the car has an aftermarket alternator.
It is not essential as far as driving your car goes.
In reply to a message from Jagart sent Fri 11 Apr 2008:
You have a wiring problem to the brake pump relay. The relay
control circuit should not be powered at any time with the key
(ignition) off. Power is supplied via the pressure switch to close
the relay to power the pump when the pressure drops below a preset
level. There should be no power in the control side of the circuit
at any time with the ignition (key) off regardless of pressure in
the system. The power supply to the pump relay will probably be
hot at all times via a fuse from battery power.–
lockheed
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