Replacing brake fluid

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  • DocGreen
    DocGreen
    4 years ago
    Quoting Muzza Wa on 19 Mar 2020 11:13 AM

    I might be wrong but as far as I can make out, you still need to buy the vacuum unit to replace the brake fluid?

    Quoting DocGreen on 19 Mar 2020 07:57 PM

    Hey Muzza, he's got a  YouTube clip of himself flushing his system and only uses a glass jar, I've got a cheap Ebay unit you connect to your air compressor to pull the fluid through so not a big deal anyway. Without cycling the HCU with a bleeder open,  you won't get all the fluid out. 

    DocGreen

    Quoting Grease Monkey on 21 Mar 2020 08:59 PM

    They are on special at the moment Doc, exchange rate is horrible though

    Yeah GM, I hear ya, was gonna buy the cam bearing install and removal tool recently but held off for same reason,  still waiting for my upgraded HD oil pump and last eta was May so will hold out a bit longer. 
    DocGreen
  • fatbat
    fatbat
    4 years ago
    Harley heaven in melb has a decent online store and has a good sale on right now...
  • Ken in Cairns
    Ken in Cairns
    4 years ago
    Did mine yesterday with the Toledo vacuum pump, very easy to do, 1/3 of the bottle through the back caliper, remaining fluid split between the two front calipers.
    Harley Magic quoted $125 each end, so $250 to do both ends, I think $50 an end if more reasonable, as they can cycle the ABS unit for a full flush, but changing 70 percent will have to do, but I can do it more often, so it should even out 
    Fluid cost me $12, bleeder was on special for about $80, normally $125.
    Pissing down rain today, and forcast for the text of the week. 
  • Grease Monkey
    Grease Monkey
    4 years ago
    I get that people want to do this themselves and the dealer prices are a bit out there at times, I take mine in for it and get the clutch done as well even though I could do that but they do it for stuff all while doing the brakes. The reason it needs to be changed properly is because there is not much of it, it absorbs moisture and can lead to the ABS unit not working as it should or in some cases the brakes not working at all, cycling the unit is necessary to get the fluid that is in it out of it, these buggas are heavy and Fred Flintstone-ing it just isn't an option.
  • paulybronco
    paulybronco
    4 years ago
    Quoting Grease Monkey on 22 Mar 2020 12:36 AM

    I get that people want to do this themselves and the dealer prices are a bit out there at times, I take mine in for it and get the clutch done as well even though I could do that but they do it for stuff all while doing the brakes. The reason it needs to be changed properly is because there is not much of it, it absorbs moisture and can lead to the ABS unit not working as it should or in some cases the brakes not working at all, cycling the unit is necessary to get the fluid that is in it out of it, these buggas are heavy and Fred Flintstone-ing it just isn't an option.

    Totally agree. Reported some time back that suddenly mis ride the front brake lever went rock hard. Long story short it was the ABS block that needed flushing and was lucky the dealer could do it successfully as the replacement cost was crazy. I did consider removing it and running without ABS f i couldn't get it working
  • Ken in Cairns
    Ken in Cairns
    4 years ago
    Yes I totally understand what you are saying Hilly and Paul, however changing 70 percent of it every 6 months should avoid issues, as the water content should even out throughout the fluid, and when I have a spare $250 laying about I'll get em to do it. All I can do for the moment.
  • paulybronco
    paulybronco
    4 years ago
    Quoting Ken in Cairns on 22 Mar 2020 04:55 AMedited: 22 Mar 2020 04:55 AM

    Yes I totally understand what you are saying Hilly and Paul, however changing 70 percent of it every 6 months should avoid issues, as the water content should even out throughout the fluid, and when I have a spare $250 laying about I'll get em to do it. All I can do for the moment.

    And like most of you have had plenty plenty of bikes and mostly jap bikes. Other than race bikes just would bleed the brakes every now and again and jam in fresh fluid and have never had an ABS issue, then i bought a Harley..
  • Far Canal
    Far Canal
    4 years ago
    Why don't they use dot 5 brake fluid?
    Then the water thing is not an issue. They were onto it in the days of the Shovel.
  • Grease Monkey
    Grease Monkey
    4 years ago
    Quoting Far Canal on 22 Mar 2020 08:23 AMedited: 22 Mar 2020 08:23 AM

    Why don't they use dot 5 brake fluid?
    Then the water thing is not an issue. They were onto it in the days of the Shovel.

    Dot 5 doesn't play well with abs systems for a couple of reasons, dot 5 is a silicone-based brake fluid and absorbs air, it foams when the abs is activated because the rapid cycling of the ABS can turn the air back to a gas, nasty.
    Also the rubber parts used with dot 3, 4 and 5.1 are not always compatible with dot 5 and some components in the abs unit as well.
  • Grease Monkey
    Grease Monkey
    4 years ago
    Quoting Ken in Cairns on 22 Mar 2020 04:55 AMedited: 22 Mar 2020 04:55 AM

    Yes I totally understand what you are saying Hilly and Paul, however changing 70 percent of it every 6 months should avoid issues, as the water content should even out throughout the fluid, and when I have a spare $250 laying about I'll get em to do it. All I can do for the moment.

    Quoting paulybronco on 22 Mar 2020 08:05 AM

    And like most of you have had plenty plenty of bikes and mostly jap bikes. Other than race bikes just would bleed the brakes every now and again and jam in fresh fluid and have never had an ABS issue, then i bought a Harley..

    Never had an abs bike until this one, bloody Harley's aye.
  • Ken in Cairns
    Ken in Cairns
    4 years ago
    Mines Dot 4 Hilly
  • Grease Monkey
    Grease Monkey
    4 years ago
    Quoting Ken in Cairns on 22 Mar 2020 10:40 AM

    Mines Dot 4 Hilly

    So is my flss Ken, my 06 Dyna was dot 5, no abs on that.
  • paulybronco
    paulybronco
    4 years ago
    Quoting Ken in Cairns on 22 Mar 2020 04:55 AMedited: 22 Mar 2020 04:55 AM

    Yes I totally understand what you are saying Hilly and Paul, however changing 70 percent of it every 6 months should avoid issues, as the water content should even out throughout the fluid, and when I have a spare $250 laying about I'll get em to do it. All I can do for the moment.

    Quoting paulybronco on 22 Mar 2020 08:05 AM

    And like most of you have had plenty plenty of bikes and mostly jap bikes. Other than race bikes just would bleed the brakes every now and again and jam in fresh fluid and have never had an ABS issue, then i bought a Harley..

    Quoting Grease Monkey on 22 Mar 2020 10:38 AM

    Never had an abs bike until this one, bloody Harley's aye.

    Forgot to mention the cam chain failure on my Vf 750, the regulator failure on my VTR 1000, the piston seizure on my H2 750 and on and on...
  • Grease Monkey
    Grease Monkey
    4 years ago
    Quoting paulybronco on 22 Mar 2020 08:05 AM

    And like most of you have had plenty plenty of bikes and mostly jap bikes. Other than race bikes just would bleed the brakes every now and again and jam in fresh fluid and have never had an ABS issue, then i bought a Harley..

    Quoting Grease Monkey on 22 Mar 2020 10:38 AM

    Never had an abs bike until this one, bloody Harley's aye.

    Quoting paulybronco on 22 Mar 2020 10:44 AM

    Forgot to mention the cam chain failure on my Vf 750, the regulator failure on my VTR 1000, the piston seizure on my H2 750 and on and on...

    Hard on the gear ol fella :)
  • paulybronco
    paulybronco
    4 years ago
    Quoting Grease Monkey on 22 Mar 2020 10:38 AM

    Never had an abs bike until this one, bloody Harley's aye.

    Quoting paulybronco on 22 Mar 2020 10:44 AM

    Forgot to mention the cam chain failure on my Vf 750, the regulator failure on my VTR 1000, the piston seizure on my H2 750 and on and on...

    Quoting Grease Monkey on 22 Mar 2020 10:46 AM

    Hard on the gear ol fella :)

    Shit components...LOL
  • robots
    robots
    4 years ago
    Quoting DocGreen on 19 Mar 2020 07:57 PM

    Hey Muzza, he's got a  YouTube clip of himself flushing his system and only uses a glass jar, I've got a cheap Ebay unit you connect to your air compressor to pull the fluid through so not a big deal anyway. Without cycling the HCU with a bleeder open,  you won't get all the fluid out. 

    DocGreen

    Quoting Grease Monkey on 21 Mar 2020 08:59 PM

    They are on special at the moment Doc, exchange rate is horrible though

    Quoting DocGreen on 21 Mar 2020 11:04 PM

    Yeah GM, I hear ya, was gonna buy the cam bearing install and removal tool recently but held off for same reason,  still waiting for my upgraded HD oil pump and last eta was May so will hold out a bit longer. 

    DocGreen

    Hi,
    i have that tool i can loan to you if interested. Worked for my 2010 so check if suits your bike.
  • Smokey61
    Smokey61
    4 years ago
    Quoting Ken in Cairns on 22 Mar 2020 04:55 AMedited: 22 Mar 2020 04:55 AM

    Yes I totally understand what you are saying Hilly and Paul, however changing 70 percent of it every 6 months should avoid issues, as the water content should even out throughout the fluid, and when I have a spare $250 laying about I'll get em to do it. All I can do for the moment.

    Quoting paulybronco on 22 Mar 2020 08:05 AM

    And like most of you have had plenty plenty of bikes and mostly jap bikes. Other than race bikes just would bleed the brakes every now and again and jam in fresh fluid and have never had an ABS issue, then i bought a Harley..

    Quoting Grease Monkey on 22 Mar 2020 10:38 AM

    Never had an abs bike until this one, bloody Harley's aye.

    Same here. Love the abilities of the later bikes, hate the complexity.

    I need an Evo with a carby and points for a second bike.
  • Damo222
    Damo222
    4 years ago
    I give mine a flush then go for a quick blat, jump on the anchors hard which cycles the ABS unit then give it a second flush. Nil issues so far.
    Damo
  • Ken in Cairns
    Ken in Cairns
    4 years ago
    That's one way to do it I guess.
    It's a pity you can't just run power to it somehow.
    Maybe possible, but a pretty expensive part to experiment with.
  • leachy
    leachy
    4 years ago
    So I just checked with the local Harley guys $120, includes front and back.
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