XJS ( X27 ) 1975 - 1996 3.6 4.0 5.3 6.0

Brake bleeding, Tips?

Thread Tools
 
Search this Thread
 
  #1  
Old 04-28-2016, 11:21 AM
gmacaz's Avatar
Member
Thread Starter
Join Date: Oct 2015
Location: Phoenix
Posts: 48
Likes: 0
Received 9 Likes on 6 Posts
Default 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.
 
  #2  
Old 04-28-2016, 01:05 PM
ptjs1's Avatar
Veteran Member
Join Date: Apr 2014
Location: Kent, UK
Posts: 3,872
Received 2,935 Likes on 1,956 Posts
Default

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
 
  #3  
Old 04-28-2016, 01:33 PM
gmacaz's Avatar
Member
Thread Starter
Join Date: Oct 2015
Location: Phoenix
Posts: 48
Likes: 0
Received 9 Likes on 6 Posts
Default

Hi again, the last six digits of the vin are 198461.
Not exactly sure of the year/month it was made.
 
  #4  
Old 04-28-2016, 02:56 PM
warrjon's Avatar
Veteran Member
Join Date: May 2010
Location: Vic Australia
Posts: 4,638
Received 2,576 Likes on 1,712 Posts
Default

Have a look at my blog, mine it the Teves ABS but should work for yours, and you bleed the brakes by yourself
 
  #5  
Old 04-29-2016, 03:50 AM
ptjs1's Avatar
Veteran Member
Join Date: Apr 2014
Location: Kent, UK
Posts: 3,872
Received 2,935 Likes on 1,956 Posts
Default

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
 
  #6  
Old 04-29-2016, 12:23 PM
gmacaz's Avatar
Member
Thread Starter
Join Date: Oct 2015
Location: Phoenix
Posts: 48
Likes: 0
Received 9 Likes on 6 Posts
Default

Thanks everyone, always get such good advice on this forum, will try and get to it this weekend in between the daily chores.

Thanks again
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
jetjack
XK8 / XKR ( X100 )
3
04-11-2016 02:46 AM
gthawk1
XJS ( X27 )
1
04-06-2016 01:25 AM
WhiteJag
XF and XFR ( X250 )
11
04-05-2016 03:22 PM
multiplecats
General Tech Help
27
04-05-2016 09:42 AM
Travis O'Gallagher
XJ XJ6 / XJR6 ( X300 )
1
04-03-2016 02:49 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


Quick Reply: Brake bleeding, Tips?



All times are GMT -5. The time now is 11:16 PM.