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Hydraulic accumulator.

I found out what these things are today.They are basically a fluid pressure relief shock absorber.
The one in our Rav4 failed at 5:45 this morning when I got in it to go work. I put my foot on the clutch pedal and it stayed on the floor, so I started the EH and woke the neighbours. LOL
When i got home I looked under the bonnet and saw clutch fluid sprayed all over the bellhousing.
I got my daughter to push the clutch in a and saw a stream of fluid squirting from a cast alloy housing in the clutch line.
This was the hydraulic accumulator. I drove it to the mechanic (no clutch, was fun) and he said he'd never seen that before on a Rav.
When he took the accumulator apart there was a small cupped disc in it that had cracked. Quick tig weld and grind the dags off and it works again.
Apparently they are on a lot of modern manual cars and failure is reasonably common.
Matt said the usual fix is to simply bypass the accumulator.
David

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That didn't go well.
Went up to Coffs Harbour (200km away) this morning. Got there and the clutch went again. So much for yesterday's repair.
Driving through Coffs traffic with no clutch was fun until I got it back on the highway and into fifth to come home.
Back to the mechanics tomorrow. I might suggest he just takes the guts out of the valve so the clutch fluid flows through it unobstructed.
David

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Old is good.

How much are they to replace? If you just replace it problem solved. How often do they go? Sounds like an easy fix. Toyota put it there for a reason, don't just take the guts out of it because it will affect down the line. Do it properly mate. It could cost more if not.

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It is a $32 part online in the USA for genuine Toyota. Add currency conversion and our smaller market and reckon $70 or so out here.
The mechanic said a lot of courier sized vans have these valves and the usual solution is to bypass it when it fails. Manual Barinas had them. He says most drivers say they don't notice without the valve.
I agree with you though, Toyota put there for a reason. They allow the use of smaller master and slave cylinders and help make the clutch pedal lighter. The Rav has the lightest clutch I have ever seen.
My reasoning with ripping the guts out was that it would work as if had been bypassed with a fluid line. This would have been to keep it on the road until we got a new part. The mechanic is Toyota trained and said obscure parts like this aren't usually kept in Australia and it's about a six week wait to get them. If it's a common failure he could be wrong.
I'll see what he says tomorrow.
David

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Old is good.

$70-&100 and then pls fitting all up say $200 to be on the safe side? ????
Buy a new one better to be safe with the family in the car mate
As I always say
Stay safe

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As I always say
Stay safe all

"just my 2cents worth"

"were going to need a bigger shed"
trippled75@yahoo.com.au
This will take You to" Old Holden sheds"
https://web.archive....

It will be getting a new one.
It's just a matter of how long it will take to get..
David

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Old is good.

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