Results 1 to 8 of 8

Thread: Spongy Brake Pedal

  1. 24th March 2010, 11:00 PM #1
    rapserv's Avatar
    rapserv
    rapserv is offline Master Subscriber
    Join Date
    Nov 2009
    Location
    Travelling (NFA)
    Posts
    391
    Total Downloaded
    0

    Spongy Brake Pedal

    Spent today replacing my front rotors with dba 4x4 survival series and bendix 4x4 pads and thought that while I was at it I would take the opportunity to change the brake fluid.
    After a couple of hours leisurely doing the rotors and pads I commenced the fluid replacement and power bleeding with the nanocom only to find that my once reasonably firm brake pedal (had about 30mm of freeplay) was now quite spongy and maintained pressure on the pedal sent it slowly almost to the floor.

    I re-bled the system over and over until I had used 6x 500ml bottles of fluid and found only a very slight improvement.
    Took the vehicle out for a careful test drive and found the brakes seemed to perform ok .. but still the unsettling feeling of spongy brakes and what seems to be excessive pedal movement.
    I have read in other posts that bleeding can be a drawn out process.. but is it normal to use this much fluid? Do I need to get a couple more bottles and continue in the hope of getting the brake pedal back to its original firmness?
    ....thanks.... Dave
    Reply With Quote Reply With Quote
  2. 24th March 2010, 11:03 PM #2
    Blknight.aus's Avatar
    Blknight.aus
    Blknight.aus is online now RoverLord Vendor
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
    Posts
    26,501
    Total Downloaded
    0
    ABS module has air in it?

    are you doing the job single handed or with a helper?
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
    Reply With Quote Reply With Quote
  3. 24th March 2010, 11:09 PM #3
    rapserv's Avatar
    rapserv
    rapserv is offline Master Subscriber
    Join Date
    Nov 2009
    Location
    Travelling (NFA)
    Posts
    391
    Total Downloaded
    0
    Quote Originally Posted by Blknight.aus View Post
    ABS module has air in it?

    are you doing the job single handed or with a helper?
    single handed with my nanocom
    Reply With Quote Reply With Quote
  4. 25th March 2010, 08:12 AM #4
    rapserv's Avatar
    rapserv
    rapserv is offline Master Subscriber
    Join Date
    Nov 2009
    Location
    Travelling (NFA)
    Posts
    391
    Total Downloaded
    0
    Quote Originally Posted by Blknight.aus View Post
    ABS module has air in it?

    are you doing the job single handed or with a helper?
    how is bleeding of the abs module performed?
    I have only bled at the wheels and cannot see a point to bleed the SLABS... although the nanocom does have an ABS Modulator bleed function and does run the pump
    Reply With Quote Reply With Quote
  5. 25th March 2010, 08:40 AM #5
    Fluids's Avatar
    Fluids
    Fluids is offline YarnMaster Subscriber
    Join Date
    Mar 2009
    Location
    Port Stephens N.S.W
    Posts
    3,158
    Total Downloaded
    0
    Quote Originally Posted by rapserv View Post
    I re-bled the system over and over until I had used 6x 500ml bottles of fluid .... I have read in other posts that bleeding can be a drawn out process.. but is it normal to use this much fluid? .... Dave
    Dave, I did mine recently, with a helper. Complete fluid change/flush and I used 1.5L .... and we went overboard .... yes, it's flushed, with new clean fluid coming thru ... but we pushed some extra thru on each corner just for good measure.

    My pedal was fine (same) after the job was done .... 3L sounds a bit excessive .... and the spongy pedal means that you let some air into the system somewhere.

    Kev..
    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

    2014 MUX LST with fruit
    2015 Kimberley Kamper "Classic"
    Reply With Quote Reply With Quote
  6. 26th March 2010, 09:28 AM #6
    Tombie Guest
    You need a friend, and/or a brake bleeding system which prevents air coming back into the callipers...

    You've got air in the system...

    No need to do the ABS with Nanocom unless you get air in the system (run out of fluid in the reservoir)
    Reply With Quote Reply With Quote
  7. 26th March 2010, 02:02 PM #7
    Fluids's Avatar
    Fluids
    Fluids is offline YarnMaster Subscriber
    Join Date
    Mar 2009
    Location
    Port Stephens N.S.W
    Posts
    3,158
    Total Downloaded
    0
    We use one of these in the workshop ... pressure & vacum testing 2 stroke crankcases ... and all sorts of other stuff.

    MV8500 Silverline Elite Automotive Kit
    Mityvac

    One man brake bleeding using this is soooo easy

    Was about $175.00 though ... thank god work pays

    Kev..
    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

    2014 MUX LST with fruit
    2015 Kimberley Kamper "Classic"
    Reply With Quote Reply With Quote
  8. 26th March 2010, 04:28 PM #8
    Pedro_The_Swift's Avatar
    Pedro_The_Swift
    Pedro_The_Swift is offline The MOD Father
    Join Date
    May 2003
    Location
    On The Road
    Posts
    30,031
    Total Downloaded
    0
    simple one person bleed is easily done,,
    no nanocom needed,
    $5 plus fluid.
    PM sent.
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
    '97 to '07. sold.
    '01 V8 D2
    '06 to 10. written off.
    '03 4.6 V8 HSE D2a with Tornado ECM
    '10 to '21
    '16.5 RRS SDV8
    '21 to Infinity and Beyond!

    1988 Isuzu Bus. V10 15L NA Diesel
    Home is where you park it..

    [IMG][/IMG]
    Reply With Quote Reply With Quote
« New shocks for SLS rear end | TJM bar recovery points »

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules

Search AULRO.com ONLY!
 Search All the Web!