Ratings for shackles and pintle hook? how to open the hook? And starter ?s

[Dabba]

First, how much weight can the shackles and pintle take for recovery? And how do you open the pintle, i cant seem to get mine to open. Also, recently got my starter replaced in the shop (it had other problems so i had him just do it) and i kept telling him 24v, says he rebuilt mine. But its really fast now, like turn the key and she starts within 1-2 seconds cold, no gas. This normal or sound too fast? (im hoping he didnt throw in a 12v starter) He did seem to tune it up too, she runs much much better now. Thanks

 

[maritimer]

pintle is 1200 pounds and to open it lift up on the top half of it might be a pin stuck or frozen i nthe lock but should just open right up, might be seized to so try some oil on it

 

[Dabba]

thanks, any idea on the shackles?

 

[cranetruck]

Shackles with a 3/4" pin should be able to handle 6,500 lb, just look for different brands and the capacity.
The pintle ratings should be listed by various manufactures also depending on size.
How they are used and rated on the truck is a different matter....the TM should give the load limits.
For example, there are two locations for a lifting/towing "eyelet" on my 8x8 and the rear facing is rated 15,000 lb while the side mounted ones are rated 45,000 lb, so how they are used makes a difference. Both are physically identical.

Edit: Added images. (Right click and select "Open link in new window" for max res). After some consideration, the 45,000lb decal must refer to the 5th wheel, just placed by the lifting eye......

 

[LanceRobson]

My edition of the -10 shows that the M1008 is rated to tow the M101 trailer at 3,000 pounds. I'm sure the pintle and it's mounts will tow much more and that the limitation is due to the M101 having no brakes. The M101s with the upgraded suspension and surge brakes will go over 3K at max load with a MEP-003 or equivelant generator and accessories.

I'm sure that with care and with no jerking the shackles handle a steady pull with the truck mired to the frame because I've recovered a few that way.

Due to the way the frame extensions (to which the shackles are pinned) attach to the frame they are intended to pull from straight ahead or only slightly to one side. You will bend things with a mired truck and a pull from well off the center line.

M1009s, depending on when they were made have, at least, two different pintles and supporting mounts. They wont take as much abuse as the M1008s and similar trucks.

For recovery (versus towing) use the shackes. The pintles are not designed for off center line or high shock loads.

Lance

 

[Dabba]

Yeah i figured the pintle wasnt designed for shock. Was just concerned about the load capacities or the shackes and if i can augment them with the pintle

 

[hobie237]

...1200 pounds ....

1. Where the hell did you get that number?
2. If it is correct, it's an imbecilic rating, since the trucks were rated to tow heavier trailers than that, with the pintle hitch.
3. I have no idea what the actual rating is, but I've pulled Blazers, Jeeps and the like out of the mud many, many times with mine. And towed several thousand pounds.

There's a pin that prevents the little lever on top from being raised, which in turn allows you to open the hitch. Wouldn't surprise me if it's rusted up or frozen or whatever, that's what penetrating oil and a nice big hammer are for.

As for the shackles, they're on there for the purpose of getting the truck unstuck, right? Logic would dictate that they're good for that, so they're likely good for anything else.

 

[joeypushjr1]

i used one shackle to yank a 30' box truck up and out of a drop in the mud this winter and im bout sure a 30'box truck is at least 2times maybe three times the weight of the blazer and the one i hooked up to didnt stress or bend or hesitate granted that dont tel you the weight its supose to pull with it but its what u did and what i dont have a problems doing....just my

 

[papercu]

From the -10
M1008, M1008A1, M1028, M1028A1, M1028A2, and M1028A3, Equipped to tow
M101 Series 3/4 ton trailers with maximum towed load of 3100 Ibs. Load on tongue
should not exceed 300 Ibs.
If moving aircraft under certain conditions
(3) Gross load will not exceed 10,000 pounds for M1009, 15,000 pounds for M1008,
M1008A1, M1028, M1028A1, M1028A2, and M1028A3.
(4) Tongue load will not exceed 100 pounds for M 1009, and 300 pounds for M1008,
M1008A1, M1028, M1028A1, M1028A2, and M1028A3.
Wayne

 

[m4A1]

The shackles were designed tor tie-down of the cucv for transportation but can be used for recovery.

 

[m4A1]

pintle is 1200 pounds

I believe that is the tow rating for the M1009 but more due to the braking capacity than the pintle rating.

 

[mistaken1]

1. Where the hell did you get that number?
2. If it is correct, it's an imbecilic rating, since the trucks were rated to tow heavier trailers than that, with the pintle hitch.
3. I have no idea what the actual rating is, but i've pulled blazers, jeeps and the like out of the mud many, many times with mine. And towed several thousand pounds.

There's a pin that prevents the little lever on top from being raised, which in turn allows you to open the hitch. Wouldn't surprise me if it's rusted up or frozen or whatever, that's what penetrating oil and a nice big hammer are for.

As for the shackles, they're on there for the purpose of getting the truck unstuck, right? Logic would dictate that they're good for that, so they're likely good for anything else.

tm 55-2320-289-14 transportability guidance cucv

 

[hobie237]

Just because the TMs mention something similar does not mean that what they say is universally true and can be applied to unrelated situations. What you posted says that the "maximum towed load" for an M1009 is 1200 pounds, which, as already posted, has a LOT more to do with brakes, wheelbase, and the like than the strength of the pintle hitch, and it is also a rating that has to fit into the specs of the military's available trailers, so it is a meaningless figure in terms of the question posed. Additionally, judging by the OP's avatar photo, he has a 1008, not a 1009, making the figure even MORE meaningless. May as well cite the "flight line allowance" of 15,000 pounds for an M1008, that would likely be closer to an accurate figure.





As an aside to the OP, the fast cranking is symptomatic of a 12v starter.

 

[Dabba]

Thanks. I hope its not a 12 or the mechanic is paying for my new one.

 

[mistaken1]

Just because the TMs mention something similar does not mean that what they say is universally true and can be applied to unrelated situations. What you posted says that the "maximum towed load" for an M1009 is 1200 pounds, which, as already posted, has a LOT more to do with brakes, wheelbase, and the like than the strength of the pintle hitch, and it is also a rating that has to fit into the specs of the military's available trailers, so it is a meaningless figure in terms of the question posed. Additionally, judging by the OP's avatar photo, he has a 1008, not a 1009, making the figure even MORE meaningless. May as well cite the "flight line allowance" of 15,000 pounds for an M1008, that would likely be closer to an accurate figure.





As an aside to the OP, the fast cranking is symptomatic of a 12v starter.

First, how much weight can the shackles and pintle take for recovery?

According to the manual excerpts I posted the M1008 and M1009 lift and tow hooks are rated at 6500 pounds working capacity. So in the absence of any of any other documented and controlled scientific tests as to the safe working capacity of the lift and tow hooks I will rely on what is in the manual (and so will the lawyers ).

 

[hobie237]

Working load usually is rated at a safety factor of at least 3. So if the "working load" is 6500, the "breaking strength" would be about 19,500, give or take. The link you posted does not have any useful information about the pintle, however, which was more a subject for discussion than the shackles. Shackles of that size (and, for what it's worth, smaller) are regularly used on a daily basis in the offroad community to haul trucks out of the mud, so their actual "rating" is somewhat irrelevant, it's safe to say that they can be used to recover the truck, or for the truck to recover another truck.

 

[mistaken1]

Working load usually is rated at a safety factor of at least 3. So if the "working load" is 6500, the "breaking strength" would be about 19,500, give or take. The link you posted does not have any useful information about the pintle, however, which was more a subject for discussion than the shackles. Shackles of that size (and, for what it's worth, smaller) are regularly used on a daily basis in the offroad community to haul trucks out of the mud, so their actual "rating" is somewhat irrelevant, it's safe to say that they can be used to recover the truck, or for the truck to recover another truck.

I understand your point about the built in safety factor in ratings but it seems to me exceeding the working strength on shackles (as well as chains) on a continual basis will eventually lead to catastrophic failure which could be a catastrophe for anyone nearby but a windfall to a personal injury lawyer.

 

[hobie237]

Possible, but I've never really worried about it, as tow straps are usually the weak link in the recovery "system." Additionally, it's REALLY difficult to figure out exactly how much force is being applied to something in a situation like that- most of the truck's weight is supported by the ground, while mud/muck/water/rocks/whatever is providing some resistance to movement. Might be interesting to get a couple trucks stuck and measure the force applied, but the situations would vary so much that it'd be really tough.

 

[Dabba]

theres an article on pirate 4x4 about resistance factors, like stuck vehicles or inclines and declines etc..

 

[hobie237]

Yeah, I've read a lot of stuff like that, but when you're actually in the field, there are more than enough variables at work that nobody is going to sit there and try to figure out what's what. The important thing is that whatever the shackles and pintle hitch are "rated for," in practice, they're more than strong enough to be effective in pretty much any off road scenario.