777D Roll overs

[rocket100]

In the first pic the operator fell asleep on night shift and launched the truck over the safety bund and into a dam. Very lucky, only got wet, not even a scratch.
Second pic shows truck going to hard around a left hand bend and mounting the safety bund and flipping onto its side. At least 20 meter drop on other side of the bund, luckly the bund did its job. Operator not hurt in this one.

[AtlasRob]

Oh man that could have been so very very different. :Banghead
Thanks for sharing

[qball]

uh, boss. know anyone with a towtruck? a BIG towtruck.

[Gavin84w]

Here are the first in a series of pics from a recovery i did of a rolled over 777D a couple of years ago at a big quarry on the outskirts of Sydney. The accident happened on a Saturday morning and the operator had dozed off, just before where the machine is there is a 1 metre high by 50 metre long bund in the centre of the haulroad. At the end of the bund there is a 1 metre square concrete block with lengths of water pipe cast in it so additional signs can be dropped in as required. Turns out the operator has drifted pos 2 tyre up onto the bund and then when it hit the concrete block it turned the truck sideways enough that it dug in on all the left side tyres and completely flipped it over in mid air and landed it on its load. The big surprise was that when we got there there was not 1 bent panel on the machine and even the mirrors were not broken.Where this happened there is a crest in the haul road of an underpass and the trucks usually downshift 1 gear from top gear so he was at speed for sure. It is a bit different taking the truck off the body!! While no panel damage had been incurred the chassis was twisted and the engine locked up.

[Gavin84w]

Pt 2

[Gavin84w]

Pt 3

[Burnout]

It's official....he sucks. As I once heard by a great philosopher known as The Rubber Duck, "I think you better lay off those acrobatics until you get a bettle handle on that machinery Lyle"

[cat 385]

nice recovery, i can see the guys on the ground needed to turn the truck but that is crazy to be underneath that load,at least that what it looked like to me from the picture.

[Gavin84w]

I gotta say i was a bit nervous when the cranies were doing it but the equipment used for that job was rated at 4 times what they were lifting etc and they had faith in there equipment. Just like most things when you know your equipment and plans are worked out beforehand it usually goes right. Some of the distances are a bit deceptive in those pics as there was lots of room around the job and i spent a day and a half working it all out with all the parties involved.

[redline]

wow, awesome series of pics thanks for posting

[MKTEF]

Very impressive job done there!
And nice pics.

Nice shirts on some of your guy's there!

But holy crap, the feeling when that truck turned over can never be forgotten by the operator.
Seat belt woud be highly apreciated in a turnover like that.
And as u said, turning totaly around without damage says something about the ride...

[Gavin84w]

Yes he could have been in a complete open cab machine and as long as he was strapped in he would have been right as the ROPS did not get touched in any way, but yeh what a ride. When i first got to the machine the load was strewn at least 100 feet down the haul road-a definent ride he won,t forget.

[AtlasRob]

I spent a little time many years ago as a spare driver amongst a dozen 769.s and I can understand how monotenous it probably gets tramping one of those trucks up and down every shift, but christ have those operators got no comprehension of the cost in damage alone ( never mind possible death) that falling asleep on duty can cause. :beatsme

Beautiful set of pictures, showing a well planned operation :drinkup

UK style would have been a 385 and a D10 with a BIG wire rope :eek: ( only kidding )

[Iron Horse]

I can never understand why they don't fit a $20 Mercury switch to the fuel pump cut off solenoid on those things . The engine would shut down instantly once inverted and save the crankshaft and block . The recovery probably only cost 30K or so but the engine and downtime will hurt big .

[Haul-Pak]

I can never understand why they don't fit a $20 Mercury switch to the fuel pump cut off solenoid on those things . The engine would shut down instantly once inverted and save the crankshaft and block . The recovery probably only cost 30K or so but the engine and downtime will hurt big .

MMM If the machine had VIMS then the engine would shut down as soon as the low engine oil sensor went nut's.

Couple a Hundred Grand for a new 3508E EUI.

UK style would have been a 385 and a D10 with a BIG wire rope ( only kidding )

Remember where the pic's are from (GAV In Australia) ..... Safety first.

[AtlasRob]

.

Remember where the pic's are from (GAV In Australia) ..... Safety first.

:beatsme You mean theres a safer way than a BIG steel rope and a couple BIG machines and plenty of banging crashing and grinding of metal. Thats how they do it on YouTube ;) :D :drinkup

[Iron Horse]

In a couple of those pics you can see something attached to the front of the diff . Is that a retarder or is a planetary reduction of some sort ? I would guess it is a retarder though .

[Haul-Pak]

You mean theres a safer way than a BIG steel rope and a couple BIG machines and plenty of banging crashing and grinding of metal. Thats how they do it on YouTube

Ha Ha Ha ... A L1850 can flip that puppy over no problem.

In a couple of those pics you can see something attached to the front of the diff . Is that a retarder or is a planetary reduction of some sort ? I would guess it is a retarder though.

Are you talking about Tranny?

[khp-mech]

MMM If the machine had VIMS then the engine would shut down as soon as the low engine oil sensor went nut's.

Couple a Hundred Grand for a new 3508E EUI.



Remember where the pic's are from (GAV In Australia) ..... Safety first.

From what I remember from the CAT shutdown system on those trucks is that the only way the engine will shutoff because of low engine oil pressure if the park brake is on. Readyline feature. If the trucks running on the ready line and it has the park brake on it will shutdown the engine. Wouldn't want the engine to shutoff because of faulty engine oil pressure sensor while meeting another truck on the truck road.

[Haul-Pak]

From what I remember from the CAT shutdown system on those trucks is that the only way the engine will shutoff because of low engine oil pressure if the park brake is on. Readyline feature. If the trucks running on the ready line and it has the park brake on it will shutdown the engine. Wouldn't want the engine to shutoff because of faulty engine oil pressure sensor while meeting another truck on the truck road.

Low Oil Sensor not pressure sensor. The VIMS will alert a Shutdown Code ...

Once over on it's back, No payloader weight, The engine would shut down.

Ready line feature? Only idle feature used here is Cold mode.

Anyhow ... Maybe they nipped the engine ....

[Iron Horse]

What is this gadget ? It bolts straight to the diff banjo , It's either a retarder , a planetary reduction of some sort or a hydrostatic or electric drive unit . It would be more than just a pinion housing .

Mercury switches cut the fuel off , killing the engine before the oil pressure gets low enough to shut the engine down via an oil pressure sender unit . Which would be a better method of shutting it down as if the engine is at full noise and relying on the low pressure unit to send the signal the crank could do another 500 revolutions before it stops . Which is plenty of time to melt Babbit Metal and destroy the engine .

[Gavin84w]

That is the transmission gents. The 777D whilst IMO should of had VIMS this machine does not but it has been made as an option to bolt on as a kit for certain serial number 777D,s

[Iron Horse]

That is the transmission gents. The 777D whilst IMO should of had VIMS this machine does not but it has been made as an option to bolt on as a kit for certain serial number 777D,s

So the transmission is bolted directly to the diff ? And a driveshaft runs back from the torque convertor to the transmission ?

[Haul-Pak]

So the transmission is bolted directly to the diff ? And a driveshaft runs back from the torque convertor to the transmission ?

The tranny bolts to the diff, the diff bolts to the diff case or banjo.

32281

The drive line runs back to the torque that is bolted to the Engine.

[Iron Horse]

I think i understand why they forward mount the driveshaft now . With it being before the tranny , it is only exposed to the engine torque (only:o) . With it mounted as per normal , after the tranny it is exposed to the extra reduction of the tranny which would be considerable . It would be a huge job to replace the bearings in the diff though .

[Haul-Pak]

I think i understand why they forward mount the driveshaft now . With it being before the tranny , it is only exposed to the engine torque (only:o) . With it mounted as per normal , after the tranny it is exposed to the extra reduction of the tranny which would be considerable . It would be a huge job to replace the bearings in the diff though .

You would be suprised how quick two guy's can rip the tranny and diff out.

Not much holding it all in there.

Depending on the truck and tools, you could have the unit on the floor in a few hour's.

32413

EDIT: The pic ... CAT 785 ... DIFF went south!

[LonestarCobra]

I think i understand why they forward mount the driveshaft now . With it being before the tranny , it is only exposed to the engine torque (only:o) . With it mounted as per normal , after the tranny it is exposed to the extra reduction of the tranny which would be considerable . It would be a huge job to replace the bearings in the diff though .

The Differential re-build is one of my favorite jobs. My service truck crane will sneak in under the raised bed of a 777 and snatch that tranny out, and then the diff with no prob. Usually takes me 2 hours. However, a bad failure in the diff usually causes more work in the brakes and finals if the metal eats up the inner duo-cone seals.:drinkup

[Iron Horse]

I was thinking more along the lines of the job of removing the tranny from the diff center , not the diff center from the banjo . How is the diff pinion attached to the tranny output shaft ? Is it a spline or is it a flange you can access through an inspection plate ?

Funny story , i was watching a mechanic swearing away and trying to pry a diff center out of a truck once . I watched for a while (i'm like that ***) and then casually said , maybe if you pull the axles it will come out easier :cool: .

[LonestarCobra]

The Diff pinion is housed in the diff housing bearings and all. It has a female spline that goes up inside it. When you pull the tranny all that is sticking out is the output shaft and the little speed sensor shaft inside the output shaft. (That is on 777 and 773):usa

[Haul-Pak]

The Diff pinion is housed in the diff housing bearings and all. It has a female spline that goes up inside it. When you pull the tranny all that is sticking out is the output shaft and the little speed sensor shaft inside the output shaft. (That is on 777 and 773):usa

x1 :cool:

Pretty much the same all the way up.

You can leave the diff in the case and pull the tranny or pull them both as a unit.

The 793 (First Pic) Has an Adaptor where as the 785 Diff and tranny bolt right on the case.

[dpatrick]

Very professional recovery. So you had to think that one over before you put the straps to it. Are those 300 ton cranes, or do you go by the metric equivalent? Those are some pretty big fellas working the ground. Reminded me that"s where "Arnold" is from. Nice work, and good design engineering on the 7 for the drivers sake.

[chinese backhoe]

wow,there are so many nice pictures,

[awboat]

At least they are wearing their hardhats.

nice recovery, i can see the guys on the ground needed to turn the truck but that is crazy to be underneath that load,at least that what it looked like to me from the picture.

[cat 385]

At least they are wearing their hardhats.

ya you got me there.

[JDOFMEMI]

I just looked back at this again, and got to thinking about something.

Does anyone else find it odd that in the land of some very strict HSE rules, all the riggers hooking up the truck to the crane wer wearing shorts?

I know it gets hot there. I spend a lot of time here in the Mojave desert at 110* F and higher, and shorts would never fly on a mine site here. Not saying anything is wrong with it. It just seems to be one of those culture things.

[RocksnRoses]

I just looked back at this again, and got to thinking about something.

Does anyone else find it odd that in the land of some very strict HSE rules, all the riggers hooking up the truck to the crane wer wearing shorts?

I know it gets hot there. I spend a lot of time here in the Mojave desert at 110* F and higher, and shorts would never fly on a mine site here. Not saying anything is wrong with it. It just seems to be one of those culture things.

Culture be buggered, we wear shorts to keep our knackers cool, you all know what happens if they overheat. You are not a "Dinkum Aussie" if you haven't got a knacker hanging out one side your shorts.:D

Rn'R.

[Gavin84w]

It,s like the pics you see out of the anthracite region for me as it looks like a lot of guys just drive in and take pics etc, trust me Jerry it was 43 degrees C the day i did that job and we all sweated!! While the pics look bad where some people are it comes back to risk assessment. I spent 3 days engineering that lift and it went to perfection. If you do your sums and over engineer your gear (like we had here) you absolutely give yourself a much better chance at success, getting out of bed each has risk and you just address it and get on with it i say.

[JDOFMEMI]

Don't take it wrong, I just meant that I was surprised to see it on a mine site in the country where you have to have hand rails for the hand rails.

Rules abound, but it is nice to be able to have some freedom on less regulated sites to wear shorts and tank tops if you so desire. Just looked a little off, with Hard hat, safety glasses, reflective vest, steel toed boots, then to not have long pants on.

That was a first class job by the way.

[Gavin84w]

It's like a lot of pics Jerry, they don,t tell the whole story. This site is actually a very big quarry in outer west Sydney and while the dept of mines investigated this the juristiction they have over the site is a little different (and relaxed) as compared to coal mines etc

The overburden contractor used to use 994 loader and 5230 to remove about a 20' layer of top soil over the river gravel and the quarry companies had 777/5130/992 to remove about the same thickness again and then it was rehabed into a huge lake system, infact the rowing for the 2000 olympics was conducted on man made lakes within this quarry.

Try this link

http://www.penrithlakes.com.au/mainsite/site/html/pldc_home.htm