At what mileage did you replace brake booster assembly ?

[BullElk]

Inspired from the starter thread....
Whether the accumulator motor or entire booster assembly, what mileage was either replaced. ?

 

[leveeguy]

Replaced the entire assembly at 425,000 miles.

 

[GTV]

That’s what this sticky is all about

Thread 'Poll on total brake failure in 100 series'

Jul 28, 2015

There is some discussion going on of total and sudden braking failure in 100 series models, with reports of no -or essentially no- braking left at all a very short time (of the order of seconds/minutes) after dashboard warnings. That is scary stuff. It is, however, also difficult to find out how prevalent a problem that is based on just anecdotal evidence. So let's find out a bit more and see if we can get a better feel for how common a problem this really is. I'll just put out a few options in a quick poll here. Yes, yes, this is not scientific etc etc. But it may either help put...

• e9999
• Replies: 1,292
• Forum: 100-Series Cruisers

• 

 

[FxFormat]

I replaced one of mine at 120K miles, rather low compare to others but it crapped out right after a trip where i was descending from high elevation, must've cooked the brakes leading to the failure.

 

[BullElk]

That’s what this sticky is all about

Thread 'Poll on total brake failure in 100 series'

Jul 28, 2015

There is some discussion going on of total and sudden braking failure in 100 series models, with reports of no -or essentially no- braking left at all a very short time (of the order of seconds/minutes) after dashboard warnings. That is scary stuff. It is, however, also difficult to find out how prevalent a problem that is based on just anecdotal evidence. So let's find out a bit more and see if we can get a better feel for how common a problem this really is. I'll just put out a few options in a quick poll here. Yes, yes, this is not scientific etc etc. But it may either help put...

• e9999
• Replies: 1,292
• Forum: 100-Series Cruisers

• 

Oh ok. Well I haven't had any brake issues for about 15 gazillion miles running hundys, until recently replacing a accumalator motor on my '06 LX with 332k miles. So I've never needed to wonder or know about brakes. And that is zero issues with never changing fluid. So brake fuild flush is yet another OCD maintenance myth.

 

[GTV]

Oh ok. Well I haven't had any brake issues for about 15 gazillion miles running hundys, until recently replacing a accumalator motor. So I've never needed to wonder or know about brakes. And that is zero issues with never changing fluid. So brake fuild flush is yet another OCD maintenance myth.

I applaud the lack of maintenance you get away with on your rigs, it shows what these things can really put up with. However, the issue with brake fluid is that it is hydroscopic, meaning it absorbs moisture from the air. If enough of that moisture gets in there and then the brakes get hot the water will boil, turning back into a gas. And that's about the time when the brake pedal hits the floor. Maybe not a problem in Alabama, but in the mountain west I wouldn't chance it.

 

[reznunt]

135k... truck was 25 years old

 

[medtro]

Oh ok. Well I haven't had any brake issues for about 15 gazillion miles running hundys, until recently replacing a accumalator motor. So I've never needed to wonder or know about brakes. And that is zero issues with never changing fluid. So brake fuild flush is yet another OCD maintenance myth.

Would you share the link to the motor you purchased? I need to do mine.

 

[BullElk]

Would you share the link to the motor you purchased? I need to do mine.

Amazon.com: ABS Pump Brake Booster Motor Replacement for 1998-2007 Toyota Land Cruiser Tundra 4Runner Tacoma | 1998-2007 Lexus LX470 47960-60010 4796060010 Flynsu : Automotive

Buy ABS Pump Brake Booster Motor Replacement for 1998-2007 Toyota Land Cruiser Tundra 4Runner Tacoma | 1998-2007 Lexus LX470 47960-60010 4796060010 Flynsu: Power Brake Systems - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[Dirt J]

315k - entire assembly

 

[Travis351]

I've been through this 3 times actually, twice around 109k (bad replacement unit) and again at 387k

 

[andrewderrick]

170k

 

[Mchodl]

Rebuilt at 196k, replaced at 246k

 

[BullElk]

Rebuilt at 196k, replaced at 246k

Rebuilt booster assembly or just a rebuilt motor?

I've been through this 3 times actually, twice around 109k (bad replacement unit) and again at 387k

Holy bad brake luck.... thats sounds expensive.

 

[Trunk Monkey]

Be great if this was kept in the stickie thread already going for consistency and other's searching.

 

[DuckLN]

2000 lc entite brake booster assembly replaced at 262k odo.

 

[Mchodl]

Rebuilt booster assembly or just a rebuilt motor?

Replaced pump and accumulator with new OEM in 2021 Another failed brake booster thread - https://forum.ih8mud.com/threads/another-failed-brake-booster-thread.1252140/ Replaced master seals a few weeks later. The repair never was 100% perfect and several times a year with temps around 60F the issue would come back and cause the pump to cycle and throw pressure codes. Replaced the entire unit (47050-60042) recently.

 

[SteveH]

Failed at 312K - replaced entire assembly with part ordered from Toyota dealer. Turned 350K today - no other brake issues since replacement.

 

[shane431]

286,995 - complete assembly. At 302,563 today!