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Old 08-14-2010, 09:30 PM   #267
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Pushing/Pulling to the left when braking

cms4140,

After reading your post, I have to agree with 2Airs analysis and believe that a light front end on the AS might contribute to your issue..I don't have that dolphin thing going on..can't spell the p word either.

My issue is what I would assume to be a brake problem, that is if I had not inspected the brakes and could find no issue. I would have assumed that with my TV going to the left would have been associated with the road side brakes not activating before the curb side brakes...resulting in a pulling to the left. I think my physics is correct??? But pulling the drums, inspecting all the linings, no oil on the drums, all of the "electrics" working....led me to believe that I had done something when installing the hitch. Also, this pulling to the left upon gentle breaking did not happen with my older $250 WD easy lift system. Something has changed.

Maybe I am wrong in checking the brake system. I assumed that if I "pull the pin" while the tires/axles are jacked up, and the wheels lock solid and could not rotate them by hand, that would mean that the electrics are working. Maybe I need to check the voltage and assure that the voltage back to each wheel is the same.......HMMM?

So, going back to something I may have installed wrong on the hitch and my thoughts...If the yoke were slightly misaligned, let's say the tail of the yoke were to the curb side slightly during towing conditions and the brakes were applied, would that not apply a torque force which would result in pushing the TV from the curb side to the road side...ie, pushing it to the left? This would only happen if the trailer brakes did not activate before the TV.

So, now you know my theories.

2001Excella
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Old 08-14-2010, 09:34 PM   #268
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road side brakes not activating before the curb side brakes...

I think I got that backwards that is the road side brakes activating before the curb side brakes.
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Old 08-14-2010, 09:40 PM   #269
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I can't really add anything that 2air' hasn't already covered.

He is spot on with my thinking about this.


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Old 08-14-2010, 09:43 PM   #270
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Quote:
Originally Posted by 2001excella View Post
...This would only happen if the trailer brakes did not activate before the TV...
your analysis ALL seems reasonable before this snipped quote,

the key being PUSH only happens when the trailer brakes aren't completely in sync with the tv brakes.

because of the 4 bar/4 pivot design the hitch head WILL drift to the left or right,

something that doesn't happen with conventional hitches when the trailer is 'pushing' at the receiver.

the lateral movement/push could be to either side depending on momentary forces.

but with ENOUGH force in the push, a SHIFT/repositioning of the hitch could happen.

i'd expect to see SLIDING at the jack bracket U bolts or the frame bracket if this happens.

others with this issue (push) have found issues INSIDE the drums (like broken bits)

but since you've inspected and adjusted all that,

it seems reasonable 2 UP the controller gain a bit (after checking the voltages all around)

cheers
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Old 08-15-2010, 12:56 PM   #271
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2Air and Sean,
Well, after inspecting the hitch assembly and looking for gross misalignment, loose bolts, sliding at the jack brackets, tail of yoke pointing to the left or right.....nothing is apparent. Could be that something else is wrong with the drive assembly----bad voltage to the brakes, alignment, etc. I'll move off this post and if I find something...i'll be back.

Thanks for the help.

2001excella
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Old 08-23-2010, 09:09 AM   #272
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Another question from the uneducated:
Is there an easy way to get the main hitch unit off the coupler? Or is it basically an uninstall exercise.

I have to take the trailer to a dealer for a leak repair and they request hitch access to the coupler only (no PPs or HAHAs stinger hitchbox units).

Thanks-
Chris
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Old 08-23-2010, 09:27 AM   #273
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Don't know if you'd call it "easy", but you can remove the head unit by disconnecting the bars from the jacks, remove the pin and roller from the centering yoke, and then release the hitch ball lock, and the whole thing will lower to the ground.

I say "lower", but it would be more like a 230 pound chunk of metal hitting the ground. I'd put a floor jack under it, and try to gently lower it, and then roll it out of the way.
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Old 08-23-2010, 11:05 AM   #274
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Release the jack bars etc. Put a floor jack under the PP and raise till the hitch has some slack from the coupler. Release keeper on coupler and gently lower to the ground. If you do not have a floor jack, a bottle jack will do. May have to put a board on top to make it work. Anyway, no big deal just a pain in the you know what.
Bob
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Old 08-23-2010, 11:57 AM   #275
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Maybe your dealer is two blocks away or your TV is a semi but I know I wouldn't drive *my* rig to the dealer without at least some kind of WD.

My local dealer finds the ppppp to be a nuisance. They have a skid loader they use to move trailers and while it has hitches for 5ers, a ball, and a Hensley stinger it will not mate up with the ppppp. Solution is that I either have to park it in a certain spot and they work on it without moving it around or I give them the stinger and they move it with a pickup. But they deal with it.

I would push back or find another dealer. They have a pickup. The extra hassle for you to drop the head and reconnect it, and drive in an unsafe manner, to save them the trouble of moving it with a pickup rather than the yard tractor isn' worth it.

Plenty of places out there that can do a leak check.
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Old 08-23-2010, 12:07 PM   #276
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Quote:
Originally Posted by Jammer View Post
Maybe your dealer is two blocks away or your TV is a semi but I know I wouldn't drive *my* rig to the dealer without at least some kind of WD.

My local dealer finds the ppppp to be a nuisance. They have a skid loader they use to move trailers and while it has hitches for 5ers, a ball, and a Hensley stinger it will not mate up with the ppppp. Solution is that I either have to park it in a certain spot and they work on it without moving it around or I give them the stinger and they move it with a pickup. But they deal with it.

I would push back or find another dealer. They have a pickup. The extra hassle for you to drop the head and reconnect it, and drive in an unsafe manner, to save them the trouble of moving it with a pickup rather than the yard tractor isn' worth it.

Plenty of places out there that can do a leak check.
No unsafe travel planned. I was going to drop the hitch once I made it to the dealer (the only AS service dealer within 300 miles of me). I guess I will offer to leave the stinger.
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Old 08-23-2010, 12:11 PM   #277
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leave the stinger.

Yup
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Old 08-25-2010, 04:05 PM   #278
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Arrow Leave the TV?

The dealer is only 10-15 miles away from me
.
The couple of times that I have left the trailer there, I have left the TV also. They are just left hooked up the whole time. Trailer is worth a lot more more than the TV anyway.

They claim that they once had to buy someone a new Hensley.

It had something to do with the angle of the receiver on their forklift. It was different enough from the angle that the stinger was set up for to cause something on the Hensley to crack.

Since the stinger is set up up for one particular TV and receiver height/angle, I can see using another TV, with different parameters, putting some unusual stress on the hitch.

Just another option.

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Ken
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Old 08-29-2010, 10:10 AM   #279
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Add me to the expanding list of 3P owners. I received our 3p 2 weeks ago and will install it next weekend. I wanted to clean and paint the A-frame on our Safari before installing the 3P. The weather finally cooperated and I was able to paint the A-frame yesterday. I used the 4 step POR-15 process on the A-frame and the folding step and the underside of the step (it was pretty darn rusted). Marine Clean, Metal Ready, coats of POR-15 (gray base coat) then 2 coats of Sterling Silver. That Sterling Silver top coat paint is a good looking paint!

I'll report back after I have the 3p installed. Moe's (our AS) maiden voyage with the 3P will be on Sept 10th. My destination is the Walnut Valley Music Festival in Winfield, Kansas.

I really appreciate 2air starting this thread and everyone contributing. It's made it much easier getting an idea how to install the hitch and set it up. I'll head for the Cat scales as soon as I have it installed. You folks are awesome.
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Old 09-09-2010, 01:59 PM   #280
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Helpful info.

Many thanks to 2Air for starting this thread and doing such a good job .

And all others for their helpful input. All this good info has helped me make up my mind on which hitch to buy, was on the fence before now.

Charlie
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