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    Brake Booster Constantly Running

    Yeah I would sell you the accumulator separately. I think that was probably the bulk of my issue but the motor was just about toast as well. Shoot me a private message and we can work out the details. I'll probably just toss in the o-ring, spring, and pipe - they cost about $7 together.
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    Brake Booster Constantly Running

    I eventually fixed this issue by buying new OEM booster motor/pump/accumulator from Toyota ($815). I spent months troubleshooting and narrowed it down to both a worn out motor and accumulator that no longer held pressure. I had just acquired and planned to install a remanufactured motor...
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    Master Cylinder Rebuild - DIY

    Forgot to put the P/N: 47070-30060 I know this fits 03-05 GX470, will fit some 4Runners as well, not sure which.
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    Master Cylinder Rebuild - DIY

    Hi all - eventually cured my brake issues by buying new OEM booster motor/pump/accumulator from Toyota ($815). I had acquired and planned to install a remanufactured motor (brushes, commutator, bearings) and new OEM accumulator with o-ring, spring, and pipe, however the system failed about 700...
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    Master Cylinder Rebuild - DIY

    An update to my post #476: At this point I've rebuilt the master cylinder, replaced the accumulator o-ring, spring and pipe, cleaned out the motor, and replaced the unit on the vehicle. I bled the system pretty thoroughly using techstream and pedal, and then actuated the VSC solenoids (SRMF &...
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    Master Cylinder Rebuild - DIY

    You may have a point there - I'm not seeing an easy way of getting them on and off. My motor doesn't look great, but it also doesn't appear to be the cause of my issues. The brushes and commutator still have some life left, though one of the bearings is nearing its end. I'm thinking a likely...
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    Master Cylinder Rebuild - DIY

    Side note - I know Eurton Electric will refurb the motor for you. Has anyone tried their rebuild kit? Toyota, Lexus, Mitsubishi ABS Pump Motor Rebuild Kit - https://store.eurtonelectric.com/toyotalexusmitsubishiabspumpmotorrebuildkit.aspx Considering this route if Eurton will confirm it...
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    Master Cylinder Rebuild - DIY

    Thanks for those grommet part numbers. I already did the master cylinder rebuild so I should be good to go there. Has anyone had luck finding a reman'd part?
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    Master Cylinder Rebuild - DIY

    Thanks flintknapper - fairly certain the motor/accumulator is my next step. Where did you get yours and what did you pay? Looks new OEM.
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    Master Cylinder Rebuild - DIY

    Did you end up replacing just the motor, or the motor and accumulator, or the whole master cylinder assembly as well?
  11. S

    Brake Booster Constantly Running

    I think your theory makes sense. I've tried flushing and bleeding the fluid and rebuilding the master cylinder but I think I may have to try a new accumulator.
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    Master Cylinder Rebuild - DIY

    Hoping the brake booster experts here can shed some light on the issue I'm having... There's a periodic chugging/cycling noise coming from the brake booster/accumulator/reservoir area that happens constantly when the ignition is turned to ON or the vehicle is running. Brakes work fine and there...
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    Brake Booster Constantly Running

    Figured out the video... I think:
  14. S

    Brake Booster Constantly Running

    Howdy y'all. I'm a new fresh GX470 owner, bought a 2003 a couple weeks ago. There's a periodic chugging/cycling noise coming from the brake booster/accumulator/reservoir area that happens constantly when the ignition is turned to ON or the vehicle is running. Brakes work fine and there are no...
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