Brake bleeding, Tips?
#1
Brake bleeding, Tips?
Hi again to everyone, quick thanks to all on my previous posts on the water pump replacement, turned into hoses, belts, t/stat etc. but it all turned out well in the end and I have no leaks at all now.
My new question is that I am going to replace/flush the brake fluid, it appears that the vehicle has not had it changed in the 82k from new. I have looked at the workshop manual and have the sequence for bleeding i.e. FR,FL,RR,RL, but was just wondering if anyone out there who has done this has any knowledge/tips that they could pass along.
Any thoughts would be appreciated.
My new question is that I am going to replace/flush the brake fluid, it appears that the vehicle has not had it changed in the 82k from new. I have looked at the workshop manual and have the sequence for bleeding i.e. FR,FL,RR,RL, but was just wondering if anyone out there who has done this has any knowledge/tips that they could pass along.
Any thoughts would be appreciated.
#2
gmacaz,
As you probably know, if you've read through the manual, there's a big difference in the braking system in cars built in 1995 before VIN 198335 and those built from 198335 onwards.
If you've got a pre-198335 car, then you need to be very careful how you do it. And, IMO, you should bleed the rear brakes using the Teves-defined procedure, not the Jaguar-defined procedure.
If you can clarify the age of your car, you'll get the appropriate feedback.
Paul
As you probably know, if you've read through the manual, there's a big difference in the braking system in cars built in 1995 before VIN 198335 and those built from 198335 onwards.
If you've got a pre-198335 car, then you need to be very careful how you do it. And, IMO, you should bleed the rear brakes using the Teves-defined procedure, not the Jaguar-defined procedure.
If you can clarify the age of your car, you'll get the appropriate feedback.
Paul
#4
#5
gmacaz,
A couple of suggestions:
Absolutely do not let the fluid level in the reservoir fall too low. Otherwise, you may introduce air into the LP side of the system and you'll have to bleed that side first (which can be quite messy!).
As regards the rear brakes, as you'll know from the manual, the fluid is pump-driven so they are not bled using the brake pedal. I would suggest that you use teh Teves procedure, not the Jaguar procedure. The Teves procedure is:
START AT REAR LEFT, THEN REAR RIGHT (UNLESS JUST ONE REAR BRAKE NIPPLE) THEN FRONT LEFT, FRONT RIGHT.
ONE PERSON IN THE CAR, ENSURE BRAKE FLUID LEVEL IS FULLY TOPPED UP.
TURN ON IGNITION AND WAIT UNTIL BOTH ABS AND LOW PRESSURE LIGHTS HAVE EXTINGUISHED AND ALSO THE MOTOR PUMP HAS CUT OUT.
THEN, OPEN REAR LEFT BLEED NIPPLE AND HOLD BRAKE PEDAL DOWN, WITH IGNITION ON FOR 15 SECONDS – NO MORE
TIGHTEN BLEED NIPPLE, TURN OFF IGNITION, RELEASE BRAKE PEDAL
WAIT ONE MINUTE AND REPEAT FROM RESTORING SYSTEM PRESSURE AS ABOVE FOR OTHER NIPPLE IF FITTED – THEN WAIT ONE MINUTE AT LEAST BEFORE MOVING TO FRONT BRAKES – THIS PREVENTS THE MOTOR PUMP FROM OVERHEATING.
Then bleed the fronts as per the manual and remember to have the ignition on for each side.
Good luck
Paul
A couple of suggestions:
Absolutely do not let the fluid level in the reservoir fall too low. Otherwise, you may introduce air into the LP side of the system and you'll have to bleed that side first (which can be quite messy!).
As regards the rear brakes, as you'll know from the manual, the fluid is pump-driven so they are not bled using the brake pedal. I would suggest that you use teh Teves procedure, not the Jaguar procedure. The Teves procedure is:
START AT REAR LEFT, THEN REAR RIGHT (UNLESS JUST ONE REAR BRAKE NIPPLE) THEN FRONT LEFT, FRONT RIGHT.
ONE PERSON IN THE CAR, ENSURE BRAKE FLUID LEVEL IS FULLY TOPPED UP.
TURN ON IGNITION AND WAIT UNTIL BOTH ABS AND LOW PRESSURE LIGHTS HAVE EXTINGUISHED AND ALSO THE MOTOR PUMP HAS CUT OUT.
THEN, OPEN REAR LEFT BLEED NIPPLE AND HOLD BRAKE PEDAL DOWN, WITH IGNITION ON FOR 15 SECONDS – NO MORE
TIGHTEN BLEED NIPPLE, TURN OFF IGNITION, RELEASE BRAKE PEDAL
WAIT ONE MINUTE AND REPEAT FROM RESTORING SYSTEM PRESSURE AS ABOVE FOR OTHER NIPPLE IF FITTED – THEN WAIT ONE MINUTE AT LEAST BEFORE MOVING TO FRONT BRAKES – THIS PREVENTS THE MOTOR PUMP FROM OVERHEATING.
Then bleed the fronts as per the manual and remember to have the ignition on for each side.
Good luck
Paul
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