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Walker's work doing's

walkerv

Senior Member
Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
Take photos - lots of photos. We like photos of stuff, especially when it's broke ...........
Ok here ya go , not sure how good the pictures are but it cracked along an old repair that definitely wasnt fully penetrated. We pulled it apart this morning in about 6 hrs between 2 guys , 3rd guy showed up for last bit of it and boom removal, we managed it with our service trucks but really wished there was another excavator in the yard.
 

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kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,165
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
Ok here ya go , not sure how good the pictures are but it cracked along an old repair that definitely wasnt fully penetrated.

Well I'm not a welder but know I would find out who fixed it last and make sure he doesn't get the job this time!

Maybe Nige can offer some information on a repair like that, don't think my little 120 volt wire feed MIG is going to handle that!
 

bccat

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Jun 12, 2010
Messages
311
Location
Langley B C
Occupation
Retired millwright,Heavy Equipment Operator
Well I'm not a welder but know I would find out who fixed it last and make sure he doesn't get the job this time!

Maybe Nige can offer some information on a repair like that, don't think my little 120 volt wire feed MIG is going to handle that!
(IC weld )on YouTube repaired one, check it out
 

walkerv

Senior Member
Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
Well I'm not a welder but know I would find out who fixed it last and make sure he doesn't get the job this time!

Maybe Nige can offer some information on a repair like that, don't think my little 120 volt wire feed MIG is going to handle that!
I used to work at a demo company they broke at least one boom and a stick or 2 a year when the in house weld shop was done you barely could tell it was repaired. Hard sayyen when or who attempted this last weld job its been retired from the grading side for along time. Welder coming monday morning now that it is off and stripped down he will decide whether its fixed or replaced. Iron peddlers have 2 booms in stock down the road if we replace it.
 

John C.

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Joined
Jun 11, 2007
Messages
12,870
Location
Northwest
Occupation
Machinery & Equipment Appraiser
It's just another broken Cat boom then. The placement of the break is what I've commonly seen in the past. Usually the crack shows up to start with as a spider line of rust that starts in the upper corner and runs both directions, across the top and down the side. The break didn't happen all at once. It's been insidiously growing over some months. There were product bulletins out for years and on multiple models about checking for cracks. It's good practice not to weld across a boom. If you have to weld something on like a tube clamp, you should weld in line with the boom. I wouldn't hazard a guess if that had anything to do with this failure. I've seen enough of them to say it was more likely a design or quality issue. At the dealer I was working for, they didn't bother trying to fix something that went that far. I don't know the availability of a used boom, so you might have no choice but to fix it.
 

walkerv

Senior Member
Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
It's just another broken Cat boom then. The placement of the break is what I've commonly seen in the past. Usually the crack shows up to start with as a spider line of rust that starts in the upper corner and runs both directions, across the top and down the side. The break didn't happen all at once. It's been insidiously growing over some months. There were product bulletins out for years and on multiple models about checking for cracks. It's good practice not to weld across a boom. If you have to weld something on like a tube clamp, you should weld in line with the boom. I wouldn't hazard a guess if that had anything to do with this failure. I've seen enough of them to say it was more likely a design or quality issue. At the dealer I was working for, they didn't bother trying to fix something that went that far. I don't know the availability of a used boom, so you might have no choice but to fix it.
I have 2 available if need be at iron peddlers 20 minutes from the shop. Owner really doesnt like them after a few issues. We still use them but its rare, he closed the acct so we have to take a check now. I think he would rather give his money to other people. But welder will check it out monday and tell him yay or nay. Im hoping for nay so i can get a boom back on it this week and back out clearing stumps.
 

walkerv

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Jan 21, 2016
Messages
1,125
Location
wingate nc
1st two picture are of a trailer in the yard. 2nd picture are of an identical trailer i improved alot.
 

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Old Doug

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Oct 16, 2013
Messages
4,545
Location
Mo
Day off project got one more to teardown ,gotta make one good running 350 outta 2. Block on floor is my own future project. One on stand is for parts but i may rebuild it as it looks real good , engine yet to tear down is missing an 1/8 inch of one rod journal may not even touch it other then the heads.View attachment 226570
Whats is it going in ?
 

walkerv

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Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
Whats is it going in ?
My buddies pickup truck that has no money this is gonna be a serious scab a hual project. I did just pick up a 400 sbc to play with in my 78 nova till i have a shop and totally rebuild the car and build a blower engine for it . I will rebuild the 400 proper with a mild cam.
 

Old Doug

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Oct 16, 2013
Messages
4,545
Location
Mo
My buddies pickup truck that has no money this is gonna be a serious scab a hual project. I did just pick up a 400 sbc to play with in my 78 nova till i have a shop and totally rebuild the car and build a blower engine for it . I will rebuild the 400 proper with a mild cam.
I have helped alot of buddys. A so called buddy has a Dodge pickup he came buy the shop and it wasnt idling very good i thought for a cheap quick fix i would try and turn the idle up but it had a cover that needed drilled out to get to the screw i did this and for over a year its been working ok. He got it in his head now that i did something that has messed up the Throttle body. The other day it wouldnt start i went and hauled it back to shop and replaced the crank posisson censor that got it running now he says its makeing a noise that we caused.
 

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,165
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
Time to ban him from the property.
I have no patience with that class of human
(Install a muffler, later alternator quits, your fault)
Forget which shop I was at, think it was the place that worked on one of the companies truck cranes, large P&H. Well service manager was shaking his head about problem he was having with the head manager in the state for our company. Seems this shop had fixed something on the crane and now a completely different part of it was causing problems. This (mis)manager from the company I worked for was pulling the "But you just had it in the shop and said it was fixed BS!"

That guy was the major reason I retired the day I turned 65! No way I could stand to deal with his BS for one more day. He was one of those idiots who could not pour pi$$ out of a boot if the instructions were written on the heel! But simply because he was friends with someone in even higher management he got his position.
 

walkerv

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Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
Got my 400 sbc tore down , all the rods are number stamped, so unless gm did that in 1980 its been touched before . It is a low mileage stock bore block but # 8 cylinder has enough water damage in it im going to get it to a machine shop see what the other 7 holes should clean up and order pistons and have this hole sleeved. FB_IMG_1605539589152.jpg
 

56wrench

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Dec 4, 2016
Messages
2,123
Location
alberta
is yours a 2-bolt main or a 4-bolt main block? on some sbc engines, i've seen some rods stamped and some not. don't know the reason
 

walkerv

Senior Member
Joined
Jan 21, 2016
Messages
1,125
Location
wingate nc
is yours a 2-bolt main or a 4-bolt main block? on some sbc engines, i've seen some rods stamped and some not. don't know the reason
2 bolt, its been so long since i have been into a presumably untouched engine , i know the pan had been off for sure at one time in its life .
 
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