HBF comes out of retirement

[HBF84]

Aloha Guys!

Can ya’ll remind me what the F0177 and the T0580 means again?!?  I coulda sworn I read or wrote about this in the past but can’t find it now.

I think it means extra payload that can be applied to the front axle (177lbs) and then both axles (“T” for total of 580lbs).

Maybe I am off base.  Thank you in advance for your knowledge!

[Gary Lewis]

Aloha!

I don't remember the answer to the question but I think it is at the bottom of this thread.  However I'm right in the middle of something and don't have time to check it out right now, so maybe you can.  And I'll be back later to see if you have or if I need to dig deeper.  So please post what you find.  (And then you can get back to it later.  )

[Gary Lewis]

Ok, got that done and now I'm back.  And it looks like I need to update the Certification Label page with this info.

As shown above the '85 owner's manual has this:

FRONT AXLE ACCESSORY RESERVE CAPACITY (example shown is F0113) — represents the allowable weight (in pounds) for permanent accessories or equipment that may be added without exceeding the front GAWR

TOTAL ACCESSORY RESERVE CAPACITY (example shown is T0492) — represents the total weight (in
pounds) of permanent accessories or equipment that can be attached to a vehicle.

[ArdWrknTrk]

How far over are you with Big Blue?    (given the Warn bumper, winch, second battery, etc,etc, ad infinitum)

[Gary Lewis]

Ok, is this the right thread?  

Big Blue's official #'s are F0403 and T0157.  And here are my thoughts:

Front: The GAWR on the front is 3850, but that was with the original tires, front TTB's, and springs. But I'm running a 95 F350 D60 axle with 2005 SuperDuty U-code springs and larger tires.  I've found 2005 trucks with that combo and their front GAWR is 4600.  So I'd bet the front suspension can handle a lot more than the 403 lbs shown.

However, I do have the Warn bumper and 12K winch, although the aux battery would have been included in the 403 as the truck was ordered with an aux battery.  On the other hand, both batteries are a LOT heavier than factory.  And there are other things that add to the front axle's load, albeit not 100% as they are between the axles, like the inverter, the on-board air system, the toolbox stuffed with tools, the bed cover, etc.

Total: I can't wrap my head around the "157" number.  The original GVWR is 8600 lbs and it weighs 6560, so that's basically 2000 lbs.  That means we are off an order of magnitude!  

[ArdWrknTrk]

You've got to remember that this isn't Gross Weight Rating.
This is the suggested max additional constant load.

Hitch a trailer to it.
Fill it with rocks or roof shingles.
The springs don't live with that on their back all the time.

[Gary Lewis]

That may be it, Jim.  The max additional constant load.  

[ArdWrknTrk]

Cory puts it well

Rembrant wrote

They represent the front axle reserve capacity in pounds, and the total vehicle reserve capacity in pounds.




Think of it like this: The reserve capacity of the axles is the amount (in weight) that can be permanently added to the truck, before it would be considered to be over its rated empty capacity. For the guys like me with a little 2wd Flareside, you wonder what in the heck would anybody add to the front axle??...But it is referring to things like aftermarket bumpers, bush bars, winches, snow plows, etc. Total vehicle could be something like a ladder rack or boat rack, headache rack, tool box, etc.

It's the way all manufacturers rate their vehicles. If your front axle reserve capacity is only 27 lbs (like it is on my 1984 Flareside), then I couldn't install a 150 lb bumper and then go complain to the Ford dealer about unusual tire wear on the front end. They'd look at my truck and say warranty denied.

[Gary Lewis]

Thanks. I've created a new page and have stolen Cory's words.

I've edited the sample certification label I use on the page at Documentation/Specifications/Certification Label to include a Reserve Capacity section. And if you click that blue box you'll be taken to the new page at Documentation/Specifications/Reserve Capacity.

Please see what you think and give me suggestions.

[ArdWrknTrk]

Please explain how my front axle reserve capacity is greater than my total reserve capacity.  

[Gary Lewis]

Only after you explain mine:  

[Rembrant]

ArdWrknTrk wrote

Please explain how my front axle reserve capacity is greater than my total reserve capacity.  

Gary Lewis wrote

Only after you explain mine:  

That appears to be an 8-lug specific issue...??

I just went and looked back at my previous Bullnose certification labels, and the 1994 F150 currently in my garage, and a bunch of others I had on file, and the total number was always MUCH higher than the front capacity number...but they're ALL half tons, from 1980-1994. Interesting.

Technically, the total number should always be higher than the front by itself...so why your 8-lug trucks are not labelled as such...who knows. Maybe they're typos.

Be curious to see a certification label from a Chassis Cab truck.

[Rembrant]

Tried to add these in my previous post but Nabble clearly does not like decimals in picture names lol. My bad. Try this again...

[Gary Lewis]

Interesting.  You are right in that the total number should always be greater than the front axle number.  Otherwise the rear axle number would have to be a negative number, meaning it is already overloaded when it comes from the factory.  

For example, Big Blue's front has a reserve of 403 lbs and the total truck has a reserve of 157 lbs.  So that seems to say that the rear axle has a reserve of -246 lbs.

[ArdWrknTrk]

I think we each need to look into helium in the bed....

[Gary Lewis]

Why not hydrogen?  

[ArdWrknTrk]

Sure, why not?!?

"Oh, the humanity!"

[Gary Lewis]

ArdWrknTrk wrote

"Oh, the humanity!"

Yep, perfect quote.

But hasn't Toyota been working on a hydrogen-burning vehicle?  Surely that would fix our reserve problem.  Just fill the bed.  

[ArdWrknTrk]

If you consider a PEM fuel cell "burning" then the Mirai has been out a couple of years.