Quieting my pintle hitch????

[TacoDell]

I believe the proper match/fit of the pintle and lunette... is key...

However... as one tightens up that free play...

the tighter tolerance can cause a bind between both components...
which can occur when the trailer is shifting 90* right to left...

and so... I would recommend greasing the lunette and pintle to avoid the commonly known pop and release that could occur.

In other words...
the free play tolerances between the lunette and pintle...
can be too tight and promote bind.

[Maryland 110]

My lunette can turn 360 degree's and actuates the brakes from any position. Is this not common ? I have the ball pintle type hitch and its not the best fit and have been on the lookout for a better one.

[ntsqd]

The fit of the two parts is why I am interested in any published standards for lunette and pintle dimensions.

[Albin]

The fit of the two parts is why I am interested in any published standards for lunette and pintle dimensions.

I've got a copy of A-A-52550 which is the CID spec for the 18K, 40K and 100K pintle assembly hitches. Unfortunately, the inside diameter of the pintle is controlled by other specs, specifically international standardization agreement ASCC AIR STD 11/8, QSTAG 264, and STANAG 4101. This CID also states that these pintles as being interchangeable with MS51335F, MS51118F and MS51117E.

I have the MS51335F and it states the following: "Applicable provisions of ASCC Air STD 11/8, QSTAG-264, and STANAG 4101 are marked with an *. This dimension shall be of such size that it will accept a 3" x 1.66" lunette (see MS51336)."

I've also got MS51336 which shows the lunette hole being 3" +/- 1/32" FWIW.

The STANAG spec shows the lunette size but not the pintle dimension shown in -52550 and IHS standards and specs shows nothing for the AIR STD or QSTAG specs, so we're hosed there.

There are some trailer specs and drawings that may show the pintle sizes, post up your trailer type (m101, M-105, etc.) and I'll see what I can find through the Boring Library system.


Al

[Military Jeeper]

Anyone know of any other options besides:

-Replacing Pintle with smaller/tighter diameter
-Bike Tire Wrapped around

Thanks.....

[Z Bronco]

I have towed my M416 for 18 years over all kinds of terrain and it has been relatively quiet. Make sure there is enough weight in the front of the trailer putting weight on the tongue (lunette eye), this will stop the bounce that can happen if the trailer is loaded too heavy in the back. Sometimes when rock crawling a bang will happen (first time it sounded like I blew a U joint), but I usually never know that the trailer is back there.

[Vince1]

After months of the constant clanking and trying all kinds of rubber hose, I, in a fit of rage, took a torch to the lunette and then installed a Maxcoupler. Best money I ever spent on the trailer.

[REasley]

Has anyone tried spiral hydraulic hose wrap? The stuff is a high density polyethylene and is very tough. It's extruded in a spiral and would wrap around the lunette eye. I would guess a #8 or #12 would fit depending which eye you use. It would cost less than $5 for the foot or so that it would take. You should be able to find it a any hydraulic shop. http://www.pro-tec-toproducts.com/pro-tec-to-wrap.asp