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Upper roller mount worn out - 345BL

Jeremy Whittaker

Jeremy Whittaker

Well-Known Member
Joined
Oct 28, 2022
Messages
162
Location
Mesa, AZ
I tried to run my impact wrench on this bolt and it didn't budge. I'm just going to weld the new one from the rear to make sure it stays on. I feel like any other path I go down is going to lead to a ton of hours invested. The weld could always be grinded off in the future if it needs to be replaced
 
W

Welder Dave

Senior Member
Joined
Oct 11, 2014
Messages
12,548
Location
Canada
Have you tried heating the bolt and using a snipe? Using an impact doesn't mean much on its own. How much torque did you apply? You have a big expensive excavator, welding the roller from the back is about the most redneck way to fix it.
 
Jeremy Whittaker

Jeremy Whittaker

Well-Known Member
Joined
Oct 28, 2022
Messages
162
Location
Mesa, AZ
To be honest I'm not a mechanic. I've never really dealt with bolts this large. You're saying heat it up then use a snipe? I'm not even sure what this is. My impact wrench is about 1200 ft/lbs

Welder Dave said:
Have you tried heating the bolt and using a snipe? Using an impact doesn't mean much on its own. How much torque did you apply? You have a big expensive excavator, welding the roller from the back is about the most redneck way to fix it.
Click to expand...
 
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Welder Dave

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Joined
Oct 11, 2014
Messages
12,548
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A snipe is just a piece of pipe on a large wrench or socket to get more leverage. Just use a big enough wrench or socket drive to handle the increased torque. Maybe could rent a 1" drive breaker bar and socket and try about a 6ft. pipe. I've even pushed on a snipe with the skid steer bucket. Heat should help it come loose easier.
 
Jeremy Whittaker

Jeremy Whittaker

Well-Known Member
Joined
Oct 28, 2022
Messages
162
Location
Mesa, AZ
Got it. Thanks!

Welder Dave said:
A snipe is just a piece of pipe on a large wrench or socket to get more leverage. Just use a big enough wrench or socket drive to handle the increased torque. Maybe could rent a 1" drive breaker bar and socket and try about a 6ft. pipe. I've even pushed on a snipe with the skid steer bucket. Heat should help it come loose easier.
Click to expand...
 
S

Shimmy1

Senior Member
Joined
Aug 14, 2014
Messages
4,357
Location
North Dakota
Welder Dave said:
A snipe is just a piece of pipe on a large wrench or socket to get more leverage. Just use a big enough wrench or socket drive to handle the increased torque. Maybe could rent a 1" drive breaker bar and socket and try about a 6ft. pipe. I've even pushed on a snipe with the skid steer bucket. Heat should help it come loose easier.
Click to expand...
Also known as a cheater pipe
 
J

JLarson

Senior Member
Joined
Aug 23, 2020
Messages
656
Location
AZ
Occupation
Owner- civil and heavy repair/fab company
DMiller said:
My concern with slicing the gap wider is it appears the steel may be a low grade alloy and is arcing the two sections at the bolt where is side loading the bolt. Bore may be too large already where is unable to clamp the shaft effectively thus the back brace. Would serious consider a replacement found or constructed to replace what is there.
Click to expand...

Yeah someone already did a real number on that mount before. Probably got loose once and started to chowder the bore out and they just kept tightening and deforming it. That's part of the reason the bolt is so hard to get out it's jammed sideways.
 
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