Pressure bleeding brakes ok on p38???
Thread Starter
|
Drifting
Joined: Sep 2012
Posts: 45
Likes: 0
From: New Hampshire
Pressure bleeding brakes ok on p38???
Title sums it up. Just replaced ABS pump and need to bleed the brake system. I typically use my pressure bleeder on my other cars and wanted to be sure its ok to use on the p38
Pro Wrench
Joined: Feb 2008
Posts: 1,706
Likes: 3
From: Meridian, Idaho
Here is the procedure, kind of a PIA: ABS Brake Bleeding Procedure Range Rover 4.0/4.6
Also, run your pump with the output (high pressure) side disconnected. Make sure it is flowing properly. I ended up replacing my pump because the accumulator failed in an unusual way, leading me to believe it was the pump itself. It turned out that the brake fluid reservoir was so clogged up that the pump couldn't draw fluid from it, and ruined the accumulator by pumping air into it.
Also, run your pump with the output (high pressure) side disconnected. Make sure it is flowing properly. I ended up replacing my pump because the accumulator failed in an unusual way, leading me to believe it was the pump itself. It turned out that the brake fluid reservoir was so clogged up that the pump couldn't draw fluid from it, and ruined the accumulator by pumping air into it.
Last edited by LRScott; Oct 20, 2012 at 09:24 PM.
Thread Starter
|
Drifting
Joined: Sep 2012
Posts: 45
Likes: 0
From: New Hampshire
What a PITA, I didn't really follow instructions properly ( I should know better) SO sounds like I need to start all over 
I drained and flushed the reservoir out and was some of the nastiest fluid I've ever seen.
I drained and flushed the reservoir out and was some of the nastiest fluid I've ever seen.
Pro Wrench
Joined: Nov 2011
Posts: 1,462
Likes: 32
From: Duxbury MA
The reservoir in these things has very fine screensin places that you can't get to, and if the fluid isn't changed often enough it makes a nice yellowy sludge that plugs them up. Flushing the screens is almost impossible.
As for the bleeding, you need to follow the procedure. The brakes in these vehicles operate unlike any other so normal techniques don't work.
As for the bleeding, you need to follow the procedure. The brakes in these vehicles operate unlike any other so normal techniques don't work.
Thread Starter
|
Drifting
Joined: Sep 2012
Posts: 45
Likes: 0
From: New Hampshire
The reservoir in these things has very fine screensin places that you can't get to, and if the fluid isn't changed often enough it makes a nice yellowy sludge that plugs them up. Flushing the screens is almost impossible.
As for the bleeding, you need to follow the procedure. The brakes in these vehicles operate unlike any other so normal techniques don't work.
As for the bleeding, you need to follow the procedure. The brakes in these vehicles operate unlike any other so normal techniques don't work.
I'm now realizing that this p38 brake system is unlike anything I've wrenched on. The procedure list seems more complex the a engine build.
Thread Starter
|
Drifting
Joined: Sep 2012
Posts: 45
Likes: 0
From: New Hampshire
TReK
Joined: Dec 2009
Posts: 2,243
Likes: 10
From: Albany, NY
The simple bleeding you do on those with a new set of brake pads is simply turn on the vehicle and let the pump run until new fluid comes out and just keep putting new fluid in. You just need to have some press the brake pedal to activate the pump.
Thread Starter
|
Drifting
Joined: Sep 2012
Posts: 45
Likes: 0
From: New Hampshire
UPDATE: I took the time and followed the proper procedure yesterday and it seemed to go very smoothly!!!! I managed to get a bunch of air out of lines I thought were good 
Thanks for all the advice and help Rover lovers
Thanks for all the advice and help Rover lovers
Thread
Thread Starter
Forum
Replies
Last Post
