purchased some new hoses from PSS for the polo 6n

 

 

the power steering hose end that goes into the power steering pump has an o-ring on it. i installed this end and it screws down half way then get's tight. the o-ring doesn't touch the base therefore there is no seal. the threads are fine and the power steering pump is brand new. any suggestions?

 

seen on some forums people say don't use teflon tape on hydraulic systems

You are correct, it isn't good practice to use PTFE tape, in any case, if that fitting is intended to clamp down onto the 'O' ring, it will have parallel threads - PTFE tape is intended to be used on taper threads.

 

It sounds as if the threads in the new pump are not deep enough.

To make up the difference, (depending upon how great that difference is) you could use a 'Dowty' washer (metal with an internal rubber seal) - you may need a plain washer with a Dowty washer each side of it

If you use the above method, do make sure that there is sufficient length of thread entering the pump to allow the union to be fully tightened without stripping the thread.

 

You could obtain Dowty washers from a local hydraulics engineer or from people who service (for example) earth moving equipment.or agricultural engineers - maybe refrigeration/air conditioning people.

 

Regards