Ok so you did not bled the red line. Just 4 at the pump and at 4 wheels. Thanks.. confidence building... Ive done many master pumps but not this kind.
Master Cylinder Rebuild - DIY (2 Viewers)
- Thread starter Skidoo
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
What tool did you use to remove the accumulator? Did you torque it to FSM spec during the install?
The accumulator and motor are already in one unit.
City Racer kit is just the pump.
May be. It depends on what he bought.
Important! Check the reservoir after you bleed each wheel AND TOP IT OFF. The reservoir has weird multi-chamber / baffle system in it. You can go from looks good to sucking air in one wheel, and then you get to start all over again....
Ok, so you disconnect flexible fluid line, red hard fluid line and two wires? I might go this route. Thanks!
Posted this question in a separate thread...
2003 LC 100 w/245k miles. We have been having the ABS light/ Brake light/ alarm condition intermittently which causes the undrivable 'no brakes' condition. Being intermittent and not being able to replicate the condition has been very frustrating. Before I replace the MC or brakebooster etc could the wheel sensors be causing this 'zero brakes' condition? I was thinking the wheel sensors would only throw the ABS light and not the full blown undrivable no brakes condition. I didn't want to replace the big ticket items then find out in the end was just a bad wheel sensor...
I have been reading the various threads on ABS booster pump repair & replace and the MC rebuild DIY thread but from what I see the zero brake condition is either the MC or booster/accumulator.
Thanks in advance for any replies...
2003 LC 100 w/245k miles. We have been having the ABS light/ Brake light/ alarm condition intermittently which causes the undrivable 'no brakes' condition. Being intermittent and not being able to replicate the condition has been very frustrating. Before I replace the MC or brakebooster etc could the wheel sensors be causing this 'zero brakes' condition? I was thinking the wheel sensors would only throw the ABS light and not the full blown undrivable no brakes condition. I didn't want to replace the big ticket items then find out in the end was just a bad wheel sensor...
I have been reading the various threads on ABS booster pump repair & replace and the MC rebuild DIY thread but from what I see the zero brake condition is either the MC or booster/accumulator.
Thanks in advance for any replies...
MC or booster. It has given you PLENTY of warning, sounds like. Fix it before you crash. Seriously.
Andy le can fix you up for a good price on the unit. When my sensor went bad,98 100, it was just an abs light. I replaced it n no light
@gatormark91 is on it. You're dancing around the mileage where the pump fails. Especially if the truck has seen city mileage/stop and go traffic. The more you stop the more frequent that pump works in relation to mileage. Sounds like you are not in a pinch yet, but I do recommend finding a reputable mechanic to rebuild this pump or find a rebuilt for a good price. Don't end up like me on the side of the road having to pay $2500 for pump replacement from the dealer to get your DD back.
Last edited:
hoser
SILVER Star
For whatever reason, the new OEM Brake Booster Assembly is highly discounted right now. Will it go discontinued? I don't know. @OGBeno
$1317 @ McGeorge
toyotaparts.mcgeorgetoyota.com
$1317 @ McGeorge
Toyota 2003-2007 Toyota Land Cruiser Brake Booster Assembly, With Master Cylinder 47050-60043 | Toyota Parts
Genuine Toyota 2003-2007 Toyota Land Cruiser part # 47050-60043 - Brake Booster Assembly, With Master Cylinder. Toyota Online Parts is your choice for Toyota Parts and Toyota accessories. We are a factory authorized Toyota Dealer with Toyota parts and Toyota accessories all at wholesale...
toyotaparts.mcgeorgetoyota.com
Thanks all who have replied...
Agree on the seriousness...re-reading my write up does make it seem like we driving daily and using strong leg muscles to bring 100 to a stop...LOL...we are not. When the condition occurred I found was wholly undrivable but after she sat for a couple weeks we went back to further diagnose and the condition was mysteriously gone and that when we very gingerly drove to local dealer. It was only after dealer could not replicate we drove home to ponder our next step when of course condition occurred on drive home so she parked once again...
Agree about the McGeorge price for whole unit...seems like a no-brainer...am getting a labor quote to replace the whole unit since the diff in price to the booster is too close to not consider...
Thanks again Bill
Agree on the seriousness...re-reading my write up does make it seem like we driving daily and using strong leg muscles to bring 100 to a stop...LOL...we are not. When the condition occurred I found was wholly undrivable but after she sat for a couple weeks we went back to further diagnose and the condition was mysteriously gone and that when we very gingerly drove to local dealer. It was only after dealer could not replicate we drove home to ponder our next step when of course condition occurred on drive home so she parked once again...
Agree about the McGeorge price for whole unit...seems like a no-brainer...am getting a labor quote to replace the whole unit since the diff in price to the booster is too close to not consider...
Thanks again Bill
Total brake failure, (Brake Pedal to the floor!) is a sign of no brake fluid pressure.
Either a leak, where all fluid lost. Which then pressure can't come back until system filled with fluid and bleed. Not common!
Or
The more common, brake booster pump motors commutator and or brushes failing. With commutator we get dead spots. Sometimes bushes land on dead spots of commutator, other times on good spot of commutator. Which we get intermittent brake booster run times. Soon motor will not run at all.
In 9 out of 10 bad commutators. I find the brake control wire corrosion. This is from brake fluid getting on brake control wires that run to motor from ABS black box, IMHO. Which increase resistance. Either brake fluid overfilled (very common) or silage, causes wires to get wet with brake fluid, which attract moisture.
If brake reservoir stained and dark brake fluid once flushed, fluid turns dark quickly again. You likely need the brake master also. Or within about a year. The increase pressure to nearly the day it came from factory, will reveal a bad O-ring/seal (screaming or squealing master with bubbles in reservoir). Which a new booster assembly will do, bring up pressure. Even a new brake control wire may.
Eyedaho
SILVER Star
I'm a little confused on the pricing, because the list price seems low too for the whole assembly. A bunch of dealers have it listed at similar prices though. I'm not sure if I'm misremembering the price, or if there's a mistake in their system?For whatever reason, the new OEM Brake Booster Assembly is highly discounted right now. Will it go discontinued? I don't know. @OGBeno
$1317 @ McGeorge
Toyota 2003-2007 Toyota Land Cruiser Brake Booster Assembly, With Master Cylinder 47050-60043 | Toyota Parts
Genuine Toyota 2003-2007 Toyota Land Cruiser part # 47050-60043 - Brake Booster Assembly, With Master Cylinder. Toyota Online Parts is your choice for Toyota Parts and Toyota accessories. We are a factory authorized Toyota Dealer with Toyota parts and Toyota accessories all at wholesale...
For whatever reason, the new OEM Brake Booster Assembly is highly discounted right now. Will it go discontinued? I don't know. @OGBeno
$1317 @ McGeorge
Toyota 2003-2007 Toyota Land Cruiser Brake Booster Assembly, With Master Cylinder 47050-60043 | Toyota Parts
Genuine Toyota 2003-2007 Toyota Land Cruiser part # 47050-60043 - Brake Booster Assembly, With Master Cylinder. Toyota Online Parts is your choice for Toyota Parts and Toyota accessories. We are a factory authorized Toyota Dealer with Toyota parts and Toyota accessories all at wholesale...
What a dealer sells the parts for has no correlation with whether a part will go discontinued. No correlation at all.
hoser
SILVER Star
Again, no correlation between price and whether a Toyota supplier (Aisin, in this case) will cease production of a part.
This is great news! Price for pre-2003 brake booster assembly also went down by almost $1000!
toyotaparts.mcgeorgetoyota.com
1998-2003 Toyota Actuator Assembly 47050-60010 | Toyota Parts
Genuine Factory 1998-2003 Toyota part # 47050-60010 - Actuator Assembly. Toyota Online Parts is your choice for Toyota Parts and Toyota accessories. We are a factory authorized Toyota Dealer with Toyota parts and Toyota accessories all at wholesale prices for your Tundra, Tacoma, Camry...
toyotaparts.mcgeorgetoyota.com
