Cruiser Cab Chassis Sagging Springs

Cruisers have suffered from sagging springs since they first arrived back in the 60's, there has to be a reason for so many aftermarket suppliers in Oz.
Best of luck with the stealer, I fought long and hard the first time, then they replaced them and six months later they were as bad as the original set, never bothered after that just factored replacement suspension into the price.

Rosco

I remember replacing a lot of sagged Hilux front springs under warranty at work back in the mid 1980s. There were no problems with the Cruiser ute, troopy or the 60 series.

See what the dealer says. If you are not happy then insist they arrange for a Toyota technical rep to meet you at the dealers. Don't fit non genuine springs at this stage. If they cause any problems then you are on your own. Toyota will not be interested.

First question......how does it sit completely unloaded

Have you weighed it.

front rear split.

If there is room and a co operative weight bridge operator you may be able to get the rear wheels on the bridge one at a time by backing on at an angle......some bridges you just cant

No point going to the dealer without all the information and a solid case

Don't get all twisted about the springs being flat either...look and see how much travel there is remaining before it sits on its bump stops.

My hilux is definitely not sagged and the springs sit flat the way it is loaded.

All the toyota utes as factory sit down in the ass when fully loaded.

cheers

Dont let it bother you too much Rosco leaf spring Patrols are no better,thats why most of us upgrade the suspension. good luck Wally

One of our vanners has had the same issue, ended up putting firestone airbags on it.

I have a 2007 70 series with a canopy and yes sagged rear springs.
If you are going to replace the rear have a look at Sax Suspension before you decide on what to buy.

Springs are a funny thing and just because they sag or even invert with weight doesn't mean they are stuffed...... the hard thing is in the case of a Landcruiser 70 series is being able to make it carry the weight but most importantly passenger comfort and driveability.

If it had coil springs in the rear you could get the best of both worlds by using progressive rate springs.

The springs in OEM applications are designed to carry the said weight but not constantly, if they were made to carry a constant weight you would have 95% of the people with them fitting softer springs illegally derating it's carry capacity making it defectable.

As said above that is why there are so many aftermarket spring makers.

If you want a bit more capacity you could pull the spring packs apart and remove the anti friction plates..... this may give you another 20% capacity but the down side is it makes them a bit louder.

Have you ever put it over a weighbridge?
I have and it’s a bit of a surprise.
Toyoto use the term Landcruiser on a lot of different models – 200 series, 70 series, even the Prado is a Landcruiser - I assume your Landcruiser is a 70 series.
I have a Troopy – 1 tonne load capacity.
Carrying 2 humans (170kg) 2 Tanks of fuel (180kg) 2 Engels full of food and drinks (100kg) 2 spare tyres (100kg) Caravan on towbar (200kg) Bull bar (50kg) add a bit of 4WD gear, jacks, straps, compressor, etc and you are getting up to full load.
And that’s without adding grog and a few other things.

since they went the longer springs with the 79, they lost most of there load carrying ability with standard springs

they really benifit from new springs it will add alot of hight

Well ............

Back from the stealer ... at least they were honest and agreed the springs are way too soft these days. They wacked it on a weighbridge and returned 1291 kg to the front axle and 1526 to the rear with bugger all difference side to side. At 2817 kg (both tanks almost full) that's way under the GVM to which they agreed. They could only suggest airbag helpers and made the observation that in their opinion after market springs/shocks would be too harsh.

Your thoughts gents ??

Purchased our 79 series Turbo 1HDTFE new in 2004 and with 3.76tonne and towing 3.5tonne Boroma started of with a set of PolyAir Bags inflated to 90psi with Std springs until 2007. Then upgraded legally to 3.76t (new H/Duty springs/shocks all round) and now only need to run approx 30-60psi in air bags and unloaded ute still rides good.
I am still using all of the original Rear Spring bushes and they show little or no signs of wear or bad deformation at 90,000kms with this load which is on at least 70% of the kilometres driven as we are on the road full time. That has included a trip up Cape York and a couple of trips camping west of Cairns of course without the van.

Cheers Kev.