ciffer
1/2 ton status
What size are the bolts holding the bumper to the frame? I am going to torch the old bolts off and need to know what size to buy to put the new bumper on.
CK5
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Bolt size for bumpers
- Thread starter ciffer
- Start date
The brackets to the frame are usually 1/2" bolts,but its best to make sure by measuring the old ones as they do differ sometimes,depending on what bumper it has--a 3/4" wrench fits a 1/2" bolt,that might be a quicker way to measuer them...when I need to measure a bolt shank I use my drill bit case as a guide...
Most chrome bumpers use 7/16" carriage head type bolts to bolt the bumper to the brackets,they have a nickel "sheild" wrapped around the heads...I wouldn't use regular hardware store carriage bolts because they are soft,grade 2 at best,and will not be strong enough in a collision...
Most chrome bumpers use 7/16" carriage head type bolts to bolt the bumper to the brackets,they have a nickel "sheild" wrapped around the heads...I wouldn't use regular hardware store carriage bolts because they are soft,grade 2 at best,and will not be strong enough in a collision...
ciffer
1/2 ton status
How many of the 1/2 inch are needed. I am thinking six but am not sure.
both donor and receiving vehicles are 88 suburbans
both donor and receiving vehicles are 88 suburbans
Are there no bolts in place currently?
And LMC has a good diagram of the bumper mounts if you'd like to count what's needed and sizes for your specific truck.
And LMC has a good diagram of the bumper mounts if you'd like to count what's needed and sizes for your specific truck.
ciffer
1/2 ton status
We torched off the good bumper and I am not near the good truck. The good truck has bolts in place and a crumpled bumper. I guess I should go to where it is and count.
The bolts on the outside, i.e. that go through the bumper, are 1/2" carriage bolts (round head with the square thing on the inside), maybe an inch, inch and a half long. Were you to get 2" ones you'd be fine.
Bolt locations and quantities, as mentioned, in LMC's exploded parts diagrams:
Front:
http://www.lmctruck.com/icatalog/csb/full.aspx?Page=25
Rear:
http://www.lmctruck.com/icatalog/csb/full.aspx?Page=26
-- A
Bolt locations and quantities, as mentioned, in LMC's exploded parts diagrams:
Front:
http://www.lmctruck.com/icatalog/csb/full.aspx?Page=25
Rear:
http://www.lmctruck.com/icatalog/csb/full.aspx?Page=26
-- A
ciffer
1/2 ton status
The brackets are still on the bumper; the carriage bolts are still in place. we cut the bolts that hold the brackets to the frame rails.
