ProcrastinatorFraser

Active Member

• Sep 7, 2015

• #1

Me 90 now has been bled out several times, master cylinder is new, circuit has been checked for leaks, none, new rear slave cylinders, front calipers are not leaking... WHAT???
I go out to my car, it having not been run that day, the pedal will drop to the floor. After a little bit of braking, it comes back up to the top where it is actually too high up, and i get the feeling pressure will build up in the rear cylinders, and force them shut. I feel that will happen, cos it happened before. What do you guys suggest i do?

 

NiallRussell

Well-Known Member

• Sep 7, 2015

• #2

Is the break fluid old? water in the fluid can make the breaks feel pretty weak. I had some strange goings on and I did a complete flush. Felt great after.

 

Brown

Well-Known Member

Full Member

• Sep 7, 2015

• #3

Don 't underestimate the amount of air that can hide in Land Rover brakes. I bleed loads of fluid through and it takes ages to get rid of the bubbles from the rear brakes, especially the passenger side. I find it best to bleed them a couple of times and then let it stand overnight and bleed it some more the following day It's only then that the pedal gets tolerably firm.

 

jamesmartin

Well-Known Member

• Sep 7, 2015

• #4

ProcrastinatorFraser said:

Me 90 now has been bled out several times, master cylinder is new, circuit has been checked for leaks, none, new rear slave cylinders, front calipers are not leaking... WHAT???
I go out to my car, it having not been run that day, the pedal will drop to the floor. After a little bit of braking, it comes back up to the top where it is actually too high up, and i get the feeling pressure will build up in the rear cylinders, and force them shut. I feel that will happen, cos it happened before. What do you guys suggest i do?

Click to expand...

do shoes need adjusting, or you do have a faulty cylinder, air will often pass the seals even if its not too bad as to let fluid leak, with a good system bleeding air out is simple anhd quick requiring few pedal presses

 

ProcrastinatorFraser

Active Member

• Sep 7, 2015

• #5

Thanks for the replies. I'm considering getting a easybleed kit from amazon, along with a compression tester for a 300tdi rebuild. Will the EZbleed kit deal with air in the system? so long as i dont have faulty cylinders, as James said?

 

jamesmartin

Well-Known Member

• Sep 7, 2015

• #6

if its a good system ordinary bleeding should be simple and quick

 

Marmaduke

Well-Known Member

• Sep 7, 2015

• #7

When you push the pedal to the floor I wedge it there with a jack handle the close the bleed nipple, release the pedal, top up the fluid and repeat cos I found that if I just repeatedly pumped the pedal I kept getting an air lock. Massive faff if you're on your own though

 

Brown

Well-Known Member

Full Member

• Sep 7, 2015

• #8

I'm sure brakes behave themselves when they see James coming. I can't bend the space time fabric in quite the same way so I've got a pressure bleeder. I can pump it up and then mess about underneath with a spanner, a little bit of plastic tube and a container to my hearts content.

 

ProcrastinatorFraser

Active Member

• Sep 8, 2015

• #9

Marmaduke said:

When you push the pedal to the floor I wedge it there with a jack handle the close the bleed nipple, release the pedal, top up the fluid and repeat cos I found that if I just repeatedly pumped the pedal I kept getting an air lock. Massive faff if you're on your own though

Click to expand...

Sorry, do you mean the push/release spanner do-i uppy do-i downy 2 man job thing? cos if so, done that atleast 5 times now.

 

ProcrastinatorFraser

Active Member

• Sep 8, 2015

• #10

Brown said:

I'm sure brakes behave themselves when they see James coming. I can't bend the space time fabric in quite the same way so I've got a pressure bleeder. I can pump it up and then mess about underneath with a spanner, a little bit of plastic tube and a container to my hearts content.

Click to expand...

Well my brakes must be teenagers, at the rebellious age, then. James has been giving me tips before on braking, to no real improvement though.

 

Marmaduke

Well-Known Member

• Sep 8, 2015

• #11

I open bleed nipple, push pedal down and jam it there, close bleed nipple, release brake and so on. Admittedly it's a right faff when doing it on your own but it always works for me, I also use the same method with the clutch

 

zeaphod

Well-Known Member

• Sep 9, 2015

• #12

Might be worth clamping off the rear flexi and seeing if it makes a difference - it will help you locate the problem area at least.

 

natas

Well-Known Member

• Sep 9, 2015

• #13

Took me months and dozens of bleeding to get mine sorted.
Finally got it done when I changed my front wheel bearings.
strange. Now they work perfectly.

 

ProcrastinatorFraser

Active Member

• Sep 9, 2015

• #14

natas said:

Took me months and dozens of bleeding to get mine sorted.
Finally got it done when I changed my front wheel bearings.
strange. Now they work perfectly.

Click to expand...

Me wheel bearings are practically brand new. Still checking for leaks though, fairly sure there are none.