Hydraulic Failure

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kiwi
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Hydraulic Failure

Post by kiwi » Sat Mar 12, 2016 2:02 am

I have gone and done it a purchased a TZD Turbo Estate.

Now the problem with this car is the suspension and brakes do not work.

This occurred due to a Ingres of water into the LHM reservoir. How severe I do not know as the system has been refilled with LHM and the previous owner told me they refurbished the FDV.

So I got a whole system from the TZS that was dismantled of spare parts!

The system wont pressurise so my dilemma is where to start and work my way back. My main obvious task is to get the system pressurised then I can worry about the height correctors etc.

Has any of the experienced mechanics come across a system failure they can help me. Oh before you offer to come out I am still in New Zealand.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

xantia_v6
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Re: Hydraulic Failure

Post by xantia_v6 » Sat Mar 12, 2016 7:40 am

kiwi wrote: Oh before you offer to come out I am still in New Zealand.
Well so am I...

But being shaken around in Christchurch, I don't suppose that I am much help either.

Does the power steering work? If not, is it as simple as an airlock in the feed to the pump?

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ken newbold
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Re: Hydraulic Failure

Post by ken newbold » Sat Mar 12, 2016 9:34 am

xantia_v6 wrote: Does the power steering work? If not, is it as simple as an airlock in the feed to the pump?
Yup, I go with that. Try filling the pump direct with a tube and funnel, you can also use the pumps own tube, disconnect it from the reservior. Fill the tube with LHM and start her up, if that doesn't work, try the same thing with engine running and be prepared to get the tube back on the res pronto!

Can't remember offhand whether it's best to do all this with the pressure screw on the regulator loose or tight, try both.

The hydraulic system is self bleeding so any air or water sould end up back in the res, the only thing to need bleeding are the brakes.
They think it's all over, it is now!

kiwi
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Re: Hydraulic Failure

Post by kiwi » Sat Mar 12, 2016 9:35 am

wrong island :(

There is no pressure what so ever. As in No Brakes either.

No tick over (not you can hear that above a clanking diesel engine). I checked the pump feed from the reservoir to the pump and there is fluid in the pump.

Obviously after it had had water in it there is contamination, hence one step at a time.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

kiwi
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Re: Hydraulic Failure

Post by kiwi » Sat Mar 12, 2016 9:40 am

Sorry Ken posted when you did! I took the pipe off the pump and noted it was full of fluid! Previous owner said he overhauled the FDV but no mention of the regulator. So my thinking is to swap that out with the one I had on the TZS that I know worked and I recond the FDV myself on that one.

After that was mentioned the valve thats on the subframe near the passenger side. Forgot what its called has wire on it. Any idea what that does?
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

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Way2go
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Re: Hydraulic Failure

Post by Way2go » Sat Mar 12, 2016 2:13 pm

That is the security valve
1991 BX19GTi Auto

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Tim Leech
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Re: Hydraulic Failure

Post by Tim Leech » Sat Mar 12, 2016 6:38 pm

Have you opened the pressure relief screw on the regulator, see if it self bleeds? Normally works, it did on the estate that geoff bought recently.
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ken newbold
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Re: Hydraulic Failure

Post by ken newbold » Sat Mar 12, 2016 7:19 pm

It's common to see the pipe full of fluid, especially when the pump is airlocked.
They think it's all over, it is now!

kiwi
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Re: Hydraulic Failure

Post by kiwi » Mon Mar 14, 2016 6:26 am

Frustration over the weekend had to be reliant on the Phone for internet so could not reply to what you guys had posted until now.

Seeing way to gos comment I replaced the security valve on the subframe. Was quite surprised to have found pressure in the valve but also rust on the electrical connection. So that has been replaced with a working valve.

Next challenge was the Regulator and FDV. Once again I replaced that complete unit today. Easy to get out pig of a job to get back in so resorted to Radiator removal for access. Tomorrow will be test day.

There was no fluid in the regulator or accumulator sphere at all.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

kiwi
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Re: Hydraulic Failure

Post by kiwi » Fri Mar 18, 2016 7:08 am

Replaced the Pump and we have life! Well sort of I discovered a repair to the small octopus at the reservoir. One the three pipes down has been patched up so after being disturbed decided to leak blood.

The Brakes work! That was a plus getting it off the ramps BUT No suspension yet.

Height correctors here I come unless someone has some ingenious idea to what else to target.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

Tinkley
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Re: Hydraulic Failure

Post by Tinkley » Fri Mar 18, 2016 9:34 am

It should now bleed fairly normally. You might have to play with the pressure relief screw to get it to fill, but mostly it will, if it is level. I had one car not rise once and it just seemed to be air somewhere in the system. However letting the relief screw go a lot and ensuring the reservoir was kept with a good level, pushed the fluid through, sorted it. It might take a litre or two if it is really empty, so keep an eye on the level... :wink:

I'd leave the height correctors alone as long as the linkage is in place, at least to start with. The little Octopus/Squid is easy to replace apart from needing to warm the tubing part that pushes onto the front height corrector. I splayed it with a heated/warmed centre punch to help it and that worked well.

kiwi
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Re: Hydraulic Failure

Post by kiwi » Fri Mar 18, 2016 8:37 pm

There is the satisfying hiss from the pressure regulator. I have no intention on touching those height correctors unless I have to, the niggling doubt is how bad that gray sludge was and if the HCs got rusty from the water than was apparently. When I removed the security valve that still had pressure so they must be stuck.

Also I am doing two jobs keeping an eye on the coolant after removing the radiator. Not sure if I bleed it properly. Just something I always seem to be cautious of. The system on the Diesel Turbo is different from all the BXs I have owned, hence caution especially as I only found one bleed screw on the thermostat housing.

Other things on the list is the water level sensor light is permanently on and I dont think the oil pressure gauge works either. Oh and I pinched the dipstick for my TXD as that feel apart. Once get these done its going to be an awesome car and being from the east coast NZ there is no rust evident.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91

Tinkley
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Re: Hydraulic Failure

Post by Tinkley » Sat Mar 19, 2016 8:17 am

The water level light is a duff sensor, halfway down rad, almost certainly. I drove round with one like that for a year then relented and bought a new one... :wink:

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ken newbold
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Re: Hydraulic Failure

Post by ken newbold » Sat Mar 19, 2016 1:27 pm

I don't think it is an oil pressure gauge, normally just an oil level gauge that only works for a few seconds once the ignition is switched on, then goes off when the engine starts.
They think it's all over, it is now!

kiwi
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Re: Hydraulic Failure

Post by kiwi » Mon Mar 21, 2016 10:05 am

yea me bad the water sensor is on the expansion tank not a priority and the Oil light is the level gauge. That dont seem to want to go out. Neither a priority at this stage the concern is getting the beast to rise.

Follow that with getting rid the black soot coming out the back that's coated the back the garage during my hydraulic tests.
1991 BX19 TZS 04/01/91 (Deceased)
1990 BX19 TRS 27/10/89 (Reborn)
1992 BX19 TXD (Ex UK - K 744 SDF) 15/06/92
1990 BX19 TZS Auto 06/11/1989
1992 BX TZD Turbo Estate (Ex UK) 1/07/91