Tein Height Control Advice Please

[dave1066]

Hi All

I have recently imported the Vellfire with has a  Japanese Tien electronic Height and Damper control Control suspension system. I'm looking for some guidance please on recharging the height accumulator.

 

The accumulator has a Schrader valve but I'm wondering if it should be recharge with nitrogen or hydraulic oil and to what pressure? . .  unfortunately Tien UK are unable to offer any help on the Japanese system.

 

Cheers

Dave

 

 

[Chris.ac]

Its suggest emailing Tein.

They have an email link on their page. 

https://www.tein.co.jp/e/products/hybrid_wagon.html

[dave1066]

Thanks @Chris.ac I did try contacting them but no reply.

 

The struts are gas but I think these have separate height control cylinder.  I'm gonna take my chances and ask a workshop to repressure the accumulator with nitrogen and hopefully the car will then lift.

[smurf]

Accumulators normally have a gas bag filled with nitrogen to provide an energy store within the nitrogen that is compressed by the hydraulic side of the system. Definitely don't recharge it with hydraulic oil.

 

Where is the hydraulic pump located and is it working? Lack of hydraulic pressure is more likely to be a cause of not lifting rather than low nitrogen pressure. 

[dave1066]

Hi @smurf thanks for the reassurance.  over the past few days I've come to the same conclusion regarding  Nitrogen and not oil to pressure the accumulator

 

The electronic controller is reporting an error code E1 which according to the user guide means low tank pressure. It's a shame it does state what the pressure should be set to.

 

I don't think I can test the pump until it's been repressurised , I did press the l pin on the Schrader connection and only a small amount of Nitrogen or air was expelled. suggesting a very low pressure.

 

All lines and connections look good so I am hoping it's just a matter of getting it up to the correct pressure to clear the Error code on the height controller for it to start working.

 

I need to find a local firm.willing to give it a pressure test/fill test without breaking the bank. 

 

 

This is the system https://www.tein.co.jp/e/products/hybrid_wagon.html#:~:text=HYBRID WAGON Damper is fully,available (except some models).

 

 

 

 

Edited 1 hour ago by dave1066