Power Steering Fluid
- Thread starter Big Les
- Start date
chrisg
Member
Les
having changed one of the PS hoses on the Turbo recently, I don't think its too difficult. Simply drain all the old fluid out and then replace with new fluid. Just make sure there's fluid getting to the pump before you run the engine at speed.
It might be worth gravity draining the PS fluid out from the reservoir = banjo bolt fitting on the drivers side of the pump, then turn the car over a few times (without starting) to get the rest of the fluid back into the reservoir.
C
having changed one of the PS hoses on the Turbo recently, I don't think its too difficult. Simply drain all the old fluid out and then replace with new fluid. Just make sure there's fluid getting to the pump before you run the engine at speed.
It might be worth gravity draining the PS fluid out from the reservoir = banjo bolt fitting on the drivers side of the pump, then turn the car over a few times (without starting) to get the rest of the fluid back into the reservoir.
C
chrisg
Member
Les
once you drain the reservoir (~ 1/2 litre) yes, you're correct there will be quite a lot of fluid still in the rack, pump, pipework and the PS fluid cooler - square coil of 3/4 loops in the front bumper on the drivers side.
Turning the engine over without starting it should push this through.
once you drain the reservoir (~ 1/2 litre) yes, you're correct there will be quite a lot of fluid still in the rack, pump, pipework and the PS fluid cooler - square coil of 3/4 loops in the front bumper on the drivers side.
Turning the engine over without starting it should push this through.
]
A5DSR
New member
The power steering is not particularly noisy so I'll just leave it.
I just have a bit of 'no-mans' land play when dead straight at motorway speeds. God knows where to start here, possibly tracking alignment checks.
I don't have a film on the bottle, just a dribble all down the inner wing. The re-connected hose should sort this.
Thanks
I just have a bit of 'no-mans' land play when dead straight at motorway speeds. God knows where to start here, possibly tracking alignment checks.
I don't have a film on the bottle, just a dribble all down the inner wing. The re-connected hose should sort this.
Thanks
There's a bit of a discussion on the Titanic listing at the mo about tie rods and their ends. It may be a place to start with sorting out that there play. About £60 a side, by the sounds of it. (I'm getting a quote from a reliable supplier I use called frazerpart, and they may be a smidge cheaper. I'll keep you posted if you like.)
Oli.
robwright
New member
Never done it on a 944 mate but usually find the lowest point you can and drain it with the resevoir top off. Then fill to a little above the max mark and operate the steering to full lock on either side to bleed it and rid of all air bubbles. Then check and adjust level if necessary. PAS and ATF pretty much the same thing mate as far as I know. When I was in the Army we just called it cherry lol... Don't think it makes that much difference for normal use. Unless you are using a load of stop leak as I am at the moment. LOL it's like gearcase grease and it don't like the cold in the morning.
robwright
New member
Use your finger or a glove if you are that way inclined and dip your finger into it. When new the fluid should look a cherry colour. It is quite a neglected thing PAS fluid and rarely gets chsnged. I would wager yours will probably be more of a black colour as it does degrade with age, use and heat etc. Don't know the history of the car but I would recommend changing it as a matter of course.
Hilux
New member
Undo hose at bottom to empty reservoir.
Fill up and the system should bleed itself.
Not that I did it mind......................if the fluid is a nice pale red colour and doesnt smell off its probably ok (after all auto gerabox oil takes much more of a pounding and sits there for years)
Fill up and the system should bleed itself.
Not that I did it mind......................if the fluid is a nice pale red colour and doesnt smell off its probably ok (after all auto gerabox oil takes much more of a pounding and sits there for years)
It's all in the manual:
sawood12
New member
Usually to replace PAS fluid you need to undo one of the hydraulic lines to the rack, unscrew the reservoir cap to drain the system and turn the steering wheel from lock to lock to fully pump/purge the fluid from the system. To refill you do everything up again and fill the reservoir bottle and again turn the wheel from lock to lock to bleed the system.
944's seem to benefit from fairly regular replacements of PAS fluid to stop the groaning noise when going full lock at low speeds. But usually you can get away with fairly infrequent changes of fluid as the system is fully sealed so no moisture or dirt gets in. I should think it is one of those jobs you maybe should consider every couple of years or so.
944's seem to benefit from fairly regular replacements of PAS fluid to stop the groaning noise when going full lock at low speeds. But usually you can get away with fairly infrequent changes of fluid as the system is fully sealed so no moisture or dirt gets in. I should think it is one of those jobs you maybe should consider every couple of years or so.
I recently replaced a couple of the hoses and most of the clips and washers on my PAS to get rid of some leaks which were plastering the pump and undertray in fluid. Leaks are mostly fixed now and don't get a covering of PAS fluid over everything.
The main thing I noticed was that the steering feels much smoother and a lot more responsive...
Dave K.
The main thing I noticed was that the steering feels much smoother and a lot more responsive...
Dave K.
Big Les
New member
Handy tip for this job and any other job where you want to move the steering with the wheels on the ground: put a glossy magazine in front of each front wheel and drive onto them first. Takes all the effort out of turning the wheels. Ruins the mag though, so use someone else's.
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