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  #1  
Old 12-16-2012, 09:53 PM
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load sharing hitch with quadra-lift Yes/No

Just wondering if those of us that tow caravans with our jeeps use the load sharing hitch if we have quadra-lift? I have heard that range rover donít like the bars as they keep altering the height. Just curious before I hook up the van (21ft Jayco sterling).
Thanks in advance.
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Old 12-16-2012, 10:31 PM
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Re: load sharing hitch with quadra-lift Yes/No

GDay Josh
Jeep issued a Service Bulletin relating to this....upshot is they recommend a WDH with all available suspension systems when towing an aggregate weight above 2268kg.
On our QL equipped WK2 I run a WDH towing our 2150kg van - a bit of a hangover from our previous Patrols that did need a WDH. Ball weight is around 220kg.
We've clocked up around 17000k towing with the Jeep in all sorts of road conditions and no issues whatsoever or conflict with the QL.
The self levelling still works and if I get a bit quick on the freeway it drops to aero no worries.
I did try for a day without the WDH but felt the rig slightly more balanced and "in tune" with the WDH fitted. If I'm crawling around in gnarly stuff I drop the bars off.
One of the good things about the QL is pulling up for the night and levelling fore and aft by raising or lowering the vehicle.

I did see on another forum a post that indicated Jeep had now stiffened up their "recommendation" that a hitch be used over 2268kg to "should" be used over 2268kg but haven't seen that in print anywhere.
Attached Files
File Type: pdf CJD WDH Bulletin 72:2011.pdf (234.3 KB, 57 views)
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Old 12-16-2012, 11:20 PM
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Re: load sharing hitch with quadra-lift Yes/No

Good info, but I think dealers who had read and understood the service bulletin would be few and far between.
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Old 12-16-2012, 11:28 PM
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Re: load sharing hitch with quadra-lift Yes/No

My van has an ATM of 2350kg and I tow it with a WDH without issue.
AFAIK self levelling suspension will level a car when weight is applied to the towbar, but it won't re-distribute the weight taken off the front, a WDH will.
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Old 12-17-2012, 03:11 PM
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Re: load sharing hitch with quadra-lift Yes/No

I just towed a 21'Jayco from Sydney to Foster and back. I did not use WDH, as the person renting the van told me it would add too much pressure on the self levelling air suspension. When I connected the van, the rear of the car sank. Once I started the engine, the suspension did it's thing and levelled the car perfectly.
The van towed fine. I was able to cruise on 100 kph without any issues and returned 11.6 L/100.
I also monitored the transmission temps. Without the van attached, the Transmission sat on 75c while cruising around 110 kph. When the van was added, while cruising around 100 kph, the temp rose by only 1c to 76c. While climbing the hill from the Hawkesbury river, the temp rose to 78c. I thought that was excellent tranny cooling.

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Old 12-17-2012, 05:10 PM
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Re: load sharing hitch with quadra-lift Yes/No

Quote:
Originally Posted by allypally View Post
I just towed a 21'Jayco from Sydney to Foster and back. I did not use WDH, as the person renting the van told me it would add too much pressure on the self levelling air suspension. When I connected the van, the rear of the car sank. Once I started the engine, the suspension did it's thing and levelled the car perfectly.

I have no doubt the Jeep did the job very well.....exactly my experience towing our van.
it is a shame though and through no fault of yours, that the person renting the van wasn't knowledgeable enough to give you the right advice or set up the van correctly so that in any unexpected situation your rig was not compromised.
Before delivery I did a lot of homework and it took a bit of digging out the WDH bulletin - several salesmen told me "the Jeep" didn't need one, and it would "wreck" the QL.
The US manual stated one was required but the Australian manual made no mention. Salesmen didn't care about that. I persevered and pestered Chrysler (along with a couple of others from the caravan forum) and eventually they issued the bulletin that importantly relates to "all available suspension systems".
My van is borderline requiring a Weight Distributing Hitch according to Jeep.

Next thing I contacted my Jeep insurer and caravan insurer and asked their attitude relating to a claim arising from an accident.
Both emphatically advised that they would expect me to comply with manufacturers recommendations at all times. In the event of any incident where a 3rd party was involved this point would certainly be raised according to them. All sorts of scenarios can be concocted from there...

OK - Hence I use the WDH and it works fine, and i've covered all bases.
For anyone who chooses to tow over 2268kg without a WDH, please don't take this post as derogatory, I've put a fair amount of time into this to get the right info, as it relates to my circumstances.
And it is a brilliant tow vehicle.

Allypally - is that a door at the rear on the RH side??????
John
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Old 12-17-2012, 09:37 PM
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Re: load sharing hitch with quadra-lift Yes/No

John,
I thankyou for your comments. It just goes to show the different "professional"opinions out there.
As you said, the manual makes no reference while a bulletin does. Next time I also will do a little further research.
From what I understand a WDH is designed mainly for levelling a tow vehicle. As you can see, the Jeep's air suspension also handles that issue. I am not disputing your comments, just trying to rationalise the concept.

Yes. it is a door on the offside. The van had 2 doors. The rear door was for access to a storage area, where we stowed 2 bikes.
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Old 12-17-2012, 11:32 PM
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Re: load sharing hitch with quadra-lift Yes/No

in our case we probably rack up around 25,000k with the van each year over all sorts of country and see some horrible setups as well as drivers who should not be allowed to hook up a van or even a box trailer.
We all see them any time we are on the road unfortunately.
For anyone coming into the van scene it is difficult to get the right information and avoid the mountain of misinformation and badly informed good intent.
A weight distributing hitch does just that - when correctly adjusted it will transfer weight from the tow ball and forward of the rear wheel. Think of the rear wheels as a pivot whereby the rear of the vehicle is lifted by the tension on the bars of the hitch, and the front lowered as a consequence of the load (weight) being transferred.
In practice this goes some way toward levelling the vehicle but more importantly it returns weight to the front wheels - no need to explain the advantages there......
If you want to dig around and get plenty of information (sometimes takes a bit of sorting), visit Caravaners Forum • View forum - TECHNICAL Forum - Caravans, Motorhomes, Vehicles and Towing.
If your better half will allow you any more time on the computer - there is a long running Jeep Grand Cherokee Diesel thread on there that goes 128 pages and 2500 or so posts. Search on that forum for info on WDH or any other matter relating to caravanning.

As you and I have both found, the Jeep will handle the job without a WDH, but the setup isn't necessarily optimum (see the Chrysler bulletin) and given an unplanned event, I want as much bias towards my favour as possible.
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Old 12-17-2012, 11:54 PM
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Re: load sharing hitch with quadra-lift Yes/No

I'm no expert by any means, and I dont tow a caravan. However the comment about the WDH putting stress on the air suspension didnt make sense to me. I always though that the WDH was there to reduce the stress on the vehicle suspension and to keep it all level.

Just my two cents, but wouldnt it be worthwhile using a WDH anyway even if the air suspension does perform a levelling function, to remove any unnecessary stress on the vehicle components?
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Old 12-18-2012, 12:40 AM
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Re: load sharing hitch with quadra-lift Yes/No

Hey Allypally, would that have been you I spotted heading south on the highway last Friday afternoon? about Karuah I think.... If not someone's got a very similar rig looking all shiney and everything!
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Old 12-18-2012, 01:43 AM
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Re: load sharing hitch with quadra-lift Yes/No

That was ME
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Old 12-18-2012, 01:55 AM
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Re: load sharing hitch with quadra-lift Yes/No

A WDH only does what it's initials stand for, Weight Distribution Hitch.
It should not by itself level a vehicle once weight is placed on the towbar, rather put some lost weight back onto the front wheels, which will aid steering and braking responses.
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