Product Review: Polyair Suspension Assister Airbags

[majama Lurker Find all posts View Profile Close majama]

Re: Product Review: Polyair Suspension Assister Airbags

Have been looking at a set of airbags and was wondering why there is two valves instead of just using one so that the pres is always equal in both bags?

[Just*Managing Member Find all posts View Profile Close Just*Managing]

Re: Product Review: Polyair Suspension Assister Airbags

If there was just one valve, wouldn't all the air just move to the bag not under pressure & leave no air in the bag that needed the air?

[clifton Advanced Member Find all posts View Profile Close clifton]

Re: Product Review: Polyair Suspension Assister Airbags

I am doing a 4 week trip from Brizvegas to Cooktown mid april and will be fairly loaded so am thinking of adding airbags. My question that I can't seem to find mentioned anywhere on the forum is when they are at the minimum 5psi, do they limit/stiffen your upwards suspension travel. In otherwords will the rear end lift a wheel easier with the airbags fitted?

Also if I don't fit the airbags, does anyone know if I would have any issues doing the bloomfield track with the arse end sagging down?

Hi Steptoe,
I have standard suspension, standard Dunlop grandcraps with 40Ltr ENGEL and normal crap in the back but normally only 2 people.
Cooktown via Bloomfield track no problems in wet season even less in June, must admit I do tred carefully with the Grandcraps due to poor grip in the wet, you will not have any problems in the dry.
Hope this helps a little!

[clifton Advanced Member Find all posts View Profile Close clifton]

Re:Re Installation of Polyair Bags, disconnecting Stab. Bar

Hi all,
My Mate and I installed a set of standard Poly-airs yesterday as towing a KK camper Cairns/Broome/Cairns, I also used Drew's instructions as a guide, great information, I used a small hydraulic jack to depress the axle in way of the bump stops each side to remove/ replace springs tacking care to not stress any brake lines .
I also disconnected the rear stabilizer bar to aid axle articulation as I did both sides in one operation making sure I torqued all fasteners to workshop manual specifications on completion, the whole operation took 1hour 15min the longest job was feeding the spiral conduit over the air lines.

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

Re: Product Review: Polyair Suspension Assister Airbags

If I am correct the poly-airs do not "lift" the rear end. They simply inflate to provide extra support for the rear coil and help prevent the coil from compressing under the additional weight of the towed trailer.

I think some people must be relecting back to the seventies when wh all put the Monroe air shocks into our Falcons and Monaros to jack the arse end up to give it that funny car drag look!!!

[clifton Advanced Member Find all posts View Profile Close clifton]

Re: Product Review: Polyair Suspension Assister Airbags

If I am correct the poly-airs do not "lift" the rear end. They simply inflate to provide extra support for the rear coil and help prevent the coil from compressing under the additional weight of the towed trailer.

I think some people must be relecting back to the seventies when wh all put the Monroe air shocks into our Falcons and Monaros to jack the arse end up to give it that funny car drag look!!!

My rear end has gone up by 15mm at about 5PSIG addn'l mass 140 litres of fuel, 40l Engel, if I inflate both bags to 25PSIG the rear end goes up by about 30mm rougly I did not measure it, so yes there is a change in unloaded ride height.

[DC Lurker Find all posts View Profile Close DC]

Re: To Drill or not to Drill

Airbag Man here,
Thought I would let you know that with our kits you do not need to drill any holes to fit our kit, you only need to cut off the over-ride bumper and re-use the last portion. We can get away with this as our parts use a industrial standard push-to-connect fitting that can withstand up to 150psi, and air brake quality tubing.

If you were fitting a kit to a 100 series you would need to drill it out as the top of the bag rests on the top spring seat which has a M8 nut welded to if, this hole is to small for an air line to pass through cleanly.

Hope this helps.

OK, I just fitted an Airbag Man kit last week before our trip away on the weekend. The kit has been redesigned, and you now need to drill a hole (the airbag sits higher in the coil so the airline needs to exit immediately above the bag). To be honest, all you are really doing is slightly enlarging the hole that is already there by the smallest amount. The kit is well designed and easy to fit. The new kit also means you now remove the bumpstop altogether and do not need to cut it - they provide a replacement spacer/seat now in place of the cutdown bumpstop.

The job took me 1.5 hours from grabbing the trolley jack to putting it away. A very easy job even for a novice (I have done a bit of suspension work on a number if different cars over the years). You don't need any special tools, and a standard drill will fit inside where you need to drill.

I noticed a massive improvement in the ride during this trip. I don't know the ball weight of my camper, but it is very heavy (I can't even begin to lift it). I would recommend this to anyone who tows anything with a decent ball weight. I would also recommend the Airbag Man kit as it was very simple to fit.

Cheers

Dan

[JeffL Lurker Find all posts View Profile Close JeffL]

Re: Product Review: Polyair Suspension Assister Airbags

Hi all,

I'm just fitting Coil Rite airbags to my late 2008 120 series.
Could someone be kind enough to post or PM me with the tightening torque specs for:

Lower shocker bolts
Rear sway bar end nuts
Bolt at axle end of Panhard rod

I have not yet been able to secure a copy of the latest manual.

Regards

[MickL Addicted PP Member Find all posts View Profile Close MickL]

Re: Product Review: Polyair Suspension Assister Airbags

Lower shocker bolts

47ft-lb or 64Nm

Rear sway bar end nuts

Ball joint nut 51ft-lb or 69Nm

Bolt at axle end of Panhard rod

You don't need to undo this to get the springs out :!:
But just incase you already have....
64ft-lb or 86Nm

Mick

[JeffL Lurker Find all posts View Profile Close JeffL]

Re: Product Review: Polyair Suspension Assister Airbags

Thanks Mick - just what I needed.
I haven't taken anything apart yet - rained here most of the day.
Just requested those figures that might be needed, based on previous posts in the thread and on the instructions. Was planning to leave the Panhard rod till last in case I didn't need to undo it.
Thanks very much for the info and advice.

[Riding On Air Junior Member Find all posts View Profile Close Riding On Air]

Re: Product Review: Polyair Suspension Assister Airbags

Hi All,
This is what we have found when pulling coils from our Prado and my old mans 90 series, without the use of coil compressors/clamps.
You need to un-do/remove parts as follows:
Sway bar mounts from axle housing
Hand brake bracket from axle housing
Bottom Shock bolt then pull off eyes
Allow axle to hang
Then remove the LHS coil first by lifting up RHS wheel or pushing/pulling down on LHS wheel. Now remove RHS coil.
Re-fit in the reverse of the above order.

Hope this helps, let me know if you have a better process as we like to provide correct advise
P.S. We sell air assist and full air bags for the rear of 120 Prados, including Grande models and new 150 Series Air Assist bags.

[borgy Member Find all posts View Profile Close borgy]

Re: Product Review: Polyair Suspension Assister Airbags

Hi all

Getting a set of poly bags very soon...

Wanted to see if any others had suggestions on a alternative locatoin for the valves (I have the water tank in the underside and the filler is in the special hole )....

Looking to know where it make sense to put it so its workable and yet does not get in the way or damaged..

appreciate any input.

cheers
Borgy

[Schaffer Addicted PP Member Find all posts View Profile Close Schaffer]

Re: Product Review: Polyair Suspension Assister Airbags

Wanted to see if any others had suggestions on a alternative locatoin for the valves (I have the water tank in the underside and the filler is in the special hole )....

Looking to know where it make sense to put it so its workable and yet does not get in the way or damaged..

A few people have placed the values just behind the plug just above the rear step when you open the rear door. Apparently this plug is for the European model where the spare wheel is mounted under the vehcile and you wind it down from here.

Actually the very first post in this thread shows where Drew put the valves and I think it's a brillant spot.

[borgy Member Find all posts View Profile Close borgy]

Re: Product Review: Polyair Suspension Assister Airbags

Wanted to see if any others had suggestions on a alternative locatoin for the valves (I have the water tank in the underside and the filler is in the special hole )....

Looking to know where it make sense to put it so its workable and yet does not get in the way or damaged..

A few people have placed the values just behind the plug just above the rear step when you open the rear door. Apparently this plug is for the European model where the spare wheel is mounted under the vehcile and you wind it down from here.

Actually the very first post in this thread shows where Drew put the valves and I think it's a brillant spot.

Thanks , but this is the 'special hole' I referred to above -as I cannot use this due to the longranger water tank that is installed underneath and acessed from this spot!

cheers

[Schaffer Addicted PP Member Find all posts View Profile Close Schaffer]

Re: Product Review: Polyair Suspension Assister Airbags

Thanks , but this is the 'special hole' I referred to above -as I cannot use this due to the longranger water tank that is installed underneath and acessed from this spot!

cheers

Didn't see that bit. I've also seen the valves at the fuel cap as well as mounted into the rear bumper. I personally don't like either of those but maybe options are limited. Can they be run inside the vehicle to the cargo area maybe?