R34 power steering

[GTSBoy]

It's a load sense idle up valve.

[drifter17a]

Update:

 

smoke test all pipes no issues

cleaned reservoir

 

fluid put in ( dexron 3 atf)

 

steering turn side to side and could hearing  gurgling from steering rack which I assumed was air lock, opened one of the steering rack connections and could see loads of air getting pushed out( not sure if you meant to do that / whether it will re introduce air into system)

 

anyways, loads of side to side sound was gone. Turned car on, pump was slightly ( barely) wining so turned side to side few more turns and fluid level when car on was almost none in resorvoir which I guess is normal if car is one. Turned car of and fluid was gushing out. Almost 200-300cc was pushed out. Repeated engine off side to side followed  by engine on and same result

 

 

 

going mad now. It seems system is either sucking air in whilst on or there is tons of air which I am not giving it enough time to bleed. Thoughts?

 

would it work like brake caliper if I open steering rack copper pipes and let gravity pull all air out?

 

or maybe have a restriction somewhere? What is the red circled item, could that be blocked? It i

Edited 16 hours ago by drifter17a

[joshuaho96]

5 hours ago, drifter17a said:

Update:

 

smoke test all pipes no issues

cleaned reservoir

 

fluid put in ( dexron 3 atf)

 

steering turn side to side and could hearing  gurgling from steering rack which I assumed was air lock, opened one of the steering rack connections and could see loads of air getting pushed out( not sure if you meant to do that / whether it will re introduce air into system)

 

anyways, loads of side to side sound was gone. Turned car on, pump was slightly ( barely) wining so turned side to side few more turns and fluid level when car on was almost none in resorvoir which I guess is normal if car is one. Turned car of and fluid was gushing out. Almost 200-300cc was pushed out. Repeated engine off side to side followed  by engine on and same result

 

 

 

going mad now. It seems system is either sucking air in whilst on or there is tons of air which I am not giving it enough time to bleed. Thoughts?

 

would it work like brake caliper if I open steering rack copper pipes and let gravity pull all air out?

 

or maybe have a restriction somewhere? What is the red circled item, could that be blocked? It i

You can try capping the power steering idle up valve at both ends if it's old. The valve and the intake manifold. That is something that is known to fail in Toyotas with age and it will suck power steering fluid into the intake and burn it in the engine which can cause issues. Then bleed it again with engine off first. Do like 30+ lock to lock turns with the front wheels off the ground.

[GTSBoy]

If doing that ^, I'd take the idle up valve out and plug the hole in the pump.

[drifter17a]

4 hours ago, joshuaho96 said:

You can try capping the power steering idle up valve at both ends if it's old. The valve and the intake manifold. That is something that is known to fail in Toyotas with age and it will suck power steering fluid into the intake and burn it in the engine which can cause issues. Then bleed it again with engine off first. Do like 30+ lock to lock turns with the front wheels off the ground.

Great will test

[drifter17a]

I might have found it, it was the inlet clip from resorviour leaking bur unsure if that is because I did not put the clamp back on correctly ( fully on the groove) or it had moved/ had always being like that

 

i moved the clamp and now doing more tests

 

i pressurised the system to 30 psi ( hydrulic system can take way more by doing little search around 150-400psi) and seen fluid was pushed out from inlet clamp. See my ingenious way of doing

 

now doing vacumme test.