Dangerous type 44 brake hydraulics continued! (Although will apply to many cars)

[missfire]

Helooo, anothere weird one. Potentially dangerous - toyota may be bought within weeks (serious measure to take/because I know once I do that I'll lose all interest in cars)

Only has happened two or three times, only when warming up/while bomb pressure is building.

Press the brake pedal..... And you lose power steering. (peesosheeet!!)

No idea on this one, but was just driving round there, checking on sites/flooding, turned right across the oncoming traffic(well there isn't any here, but crossed that lane) pressed the brake pedal, brakes work like new, lost power steering, and just about parked the car in a rockery/flower bed.

Come off the brake pedal for even a second and the power steering returns.

Every component is good, the only thing I can think of is the filters inside the banjos which attach the hydraulic lines to the pump. I cleaned the brake/bomb banjo filter while fitting the new bomb. Haven't cleaned the power steering banjo filters, so presuming they are dirty and the bomb circuit is taking priority?!

That's the only thing I can think of. Any other ideas? Buy a Toyota?

[Micky]

Dump the abs all together go for servo old school wins every time

[TeXerv]

The brake booster circuit is separated from steering circuit. 6 pistons supply the steering rack, two are for the pressure accumulator.

Are you sure, that everything is fine? Bomb pressure should never decrease significantly within a few days. May be the bomb is worn? Also the brake booster might be leaking, causing a lack of oil pressure.

You need to check / clean the filters of all banjos and the filter in the filter inside the reservoir (if present) as well. Check brake booster for leaks.

[missfire]

Originally Posted by Micky

Dump the abs all together go for servo old school wins every time

It doesn't have ABS, and it already has a servo, but I know what you mean.. set up a vacuum servo you mean. Yes, good option, but easier to buy a Toyota.

Originally Posted by TeXerv

The brake booster circuit is separated from steering circuit. 6 pistons supply the steering rack, two are for the pressure accumulator.

Are you sure, that everything is fine? Bomb pressure should never decrease significantly within a few days. May be the bomb is worn? Also the brake booster might be leaking, causing a lack of oil pressure.

You need to check / clean the filters of all banjos and the filter in the filter inside the reservoir (if present) as well. Check brake booster for leaks.

Ah, I see what you mean. Yes, the bomb is a brand new febi part, only six months old/3000km of use maybe.

I'm not sure what's going on, the bomb gives you about 30 assisted brake pedal applications before running out, it still works the next day before the engine is switched on. There was a tiny amount of some kind of oily stuff showing up on the road the other day when the rain was washing the road. I always blame the post man, because his gearbox or sump is leaking oil at a horrible rate! My rear crankshaft seal is leaking, you can see oil around the clutch bell housing.

I'll look for leaks very odd, it almost feels like an air bubble in the rack or something, like after it 'self bleeds' back into the G002000 reservoir all is well.

TOYOTA! (Joking)

[Ben]

Did it lose assistance as in you could still turn the now heavy steering wheel or did it lock up? was there any noise at that moment?

[missfire]

It could have locked! I'm not sure, if it wasn't locked it was incredibly difficult to turn, much, much harder than the little 80 I just had which had no power steering.

There has been a weird clunking noise while doing three point turns from the top of the driver's side strut tower. Maybe the bearing is locking?! Needs attention whatever it is!

[Hanuman]

i've felt something similar with the ur; such a long time ago, though.

Over a period of time, the brake circuit was slowly overhauled, but there was no specific reason/cause determined at the time, and it hasn't happened since in about 16years. The experts simply denied that it was possible- but it felt like the rack locked, not just lost assistance.

[missfire]

Sounds similar, in the spur of the moment it feels like total loss of assistance but to an ridiculous degree! Almost impossible to turn the steering wheel. Almost like either the rack is dead or is being pressurised in both direction at the same time. Are there any valves inside the rack? I'll need to look at the plumbing of the system. Going shopping. If I survive, I'll give you an update later.

[Micky]

You could buy a toyota but your street cred will go out the window

[Tonks4x4]

A silly one, check the condition of the lower balljoints. Make sure there is no play in them. Also lift the rubber boot and see if they are dry and red rusty with no grease left.

We have had exactly this recently on a cabriolet and it turned out to be the balljoints. No play but rusty and seizing not allowing the steering to turn


Tonks4x4 - The Land Rover Specialist