Good healthy carnage

[Nige]

Not much makes me go hmmmmmmmmm these days but this was one of those times.
Certainly won't qualify for Core Credit.
793F cast (as opposed to the former fabricated design that did have major cracking issues) rear wheel group.

As the boys in Suriname would say - "Boss, she done broko"

 

[Nige]

More pics.......

And before anyone asks yes the wheel rim retention hardware was all still tight.

 

[materthegreater]

That looks expensive Nigel!

 

[Nige]

From memory Reman rear wheel groups go somewhere around $250k a copy. Core Credit loss probably another $100k+ on top of that.

EDIT: I would imagine the only parts that will be salvageable from that unit will be the spindle & brake pack, plus maybe the two planetary carriers and the outer cover.

 

[DMiller]

Din't hear or Feel Nuffin, just stopped moving!! Famous Last Words.

 

[Oxbow]

More pics.......

And before anyone asks yes the wheel rim retention hardware was all still tight.

View attachment 328122
View attachment 328123
View attachment 328124

Makes me wonder if the inside wheel was cracked.

 

[DDoug]

Why the change from fabricated to cast ?
Cost reduction or longer life ?

Was the fabbed version modified to try to fix the cracking problem, and then they gave up and moved over to cast ?

Looks like it started inside, could be the radius on the bottom of a bore was not large enough, and fatigue
set in from a too sharp corner.

 

[Nige]

Makes me wonder if the inside wheel was cracked.

It was not.

Why the change from fabricated to cast ?
Cost reduction or longer life ?

The 6-piece fabricated version got up to something like GEN 6 IIRC and whatever was changed they couldn’t stop the cracking. Eventually they said screw it and switched to a 1-piece casting. I’m sure that initially the fabricated version of the wheel got the nod because it offered “significant cost savings”.

I have never seen a failure in a cast wheel anything remotely resembling this one. I can only assume there was a defect somewhere deep in the casting that escaped QC and eventually failed in high-cycle fatigue mode.

 

[Shimmy1]

I have absolutely zero knowledge or experience with that particular unit, but my clueless eyes can see potential wear marks and corrosion that suggest it was running for a period of time after it had started to fail???

 

[Nige]

I have absolutely zero knowledge or experience with that particular unit, but from what my clueless eyes can see is wear marks and corrosion that suggest it was running for a period of time after it had started to fail???

I’m sure you’re right. Cracks like that one don’t develop overnight. Also it’s not easy to spot a crack on a machine that spends most of its life bathed in mud.

 

[DMiller]

Especially areas encased by other mechanisms as Rims or Tracks packed with said Mud.

 

[DMiller]

Kind of a add for these conditions, concrete company tried a experiment with their trucks and drivers attempting to speed maintenance and dispatch for whatever reason. Trucks have been actively electronically monitored thru a paid for program that transponder reports engine data, drivetrain other info and tracks service hours for couole of months. Last week the company added Drum turn and speed log as well live dispatch messaging.

First two accidents from distracted drivers were minor fender benders, last one the truck was totaled but driver is OK and no one else or any other vehicles involved. Dash Mounted Tablets are coming OUT of the cans end of the week, subscribed program being cancelled.

 

[DMiller]

The company has their own End Dump and Bulk Trailer transports for each yard, the accidents were two mixers and one Aggregate End Dump. And mistyped Can shoulda been Cab.

Company is going to keep the maintenance side of the program, transponder will remain on the machines. Garage Mechanic at yard I deliver to is NOT enjoying the new game, Repair Orders seem to live on forever after completed where Home Office is supposed to Archive yet has not in over two months so is become loaded with stuff that have to sort thru to find current.

 

[westerner]

Repair Orders seem to live on forever

Sad, but true. My outfit got a lot better when the mechanic could close a work order just like the parts dudes. When Finance saw the discrepancy, conclusions were drawn

 

[DDoug]

On the Cat 793f....it says 9 tons lighter than the competition.....well we know where
the weight savings came from....

 

[Nige]

On the Cat 793f....it says 9 tons lighter than the competition.....well we know where
the weight savings came from....

”9 tons” is very subjective. The big variable is with what sort of body it is equipped. I’ve seen some bodies that weighed 20 tonnes and others that weighed over 40.

 

[Truck Shop]

The company has their own End Dump and Bulk Trailer transports for each yard, the accidents were two mixers and one Aggregate End Dump. And mistyped Can shoulda been Cab.

Company is going to keep the maintenance side of the program, transponder will remain on the machines. Garage Mechanic at yard I deliver to is NOT enjoying the new game, Repair Orders seem to live on forever after completed where Home Office is supposed to Archive yet has not in over two months so is become loaded with stuff that have to sort thru to find current.

That is what corporations do they saddle themselves with gratifying down loaded sub important info.
Penske has all of company info loaded in their computer and spit out generated piles of orders that
are full of coded garbage that they only know--all arriving once a month. No real way to track and
that is the way P wants it. Streamlining maintenance is always the main selling point of any program.
The credible way of a hard copy file folder was too easy. Dispatch can't even have a live conversation
with shippers/receivers these days, everything is by email, no one has a working relationship with
other business people.

 

[Camshawn]

Glad I retired. Most of the people at the wholesalers I dealt with retired within a month/year of my retirement. Our most important inside sales lady left the same day I did. I preferred the phone over email.

 

[Joe H]

Gotta put this somewhere

2.6K views · 547 reactions | | Şırnak is makinesi

.

www.facebook.com

 

[TVA]

And I just finished “redneck sculpting” the king pin bearings seal register on that axle. About two months prior. Even after hub blew - owner was arguing that there’s no oil going in to it, never mind the plug!