Brake line replacement help.

[rascole]

I am starting to replace my brake lines today and upgrading to Trailduty lines which I think are made by Crown, at least they look the same. I have already evacuated the lines and the rear lines look straight forward. The fronts where they are attached to the top by the shock look to be a bit of a pain. Does anyone have some tips?

 

[rascole]

I got all 6 of the new lines in and finger tight. But when I looked at the old lines, it looks like they have an O ring inside. Before I tighten them can someone confirm if the do have O rings? If so, I need to buy some, the new lines did not come with any or have any instructions.

 

[alrock]

Sorry, haven't pulled off my brake lines in a long time.

 

[rascole]

Old vs new hose.

 

[jphh20]

Old vs new hose.
View attachment 21715
View attachment 21716

I changed my brake lines from oem to crowne and I didn't look for o-rings. I thought most brake lines were compression type and seal with clamp load. I tightened mine line a typical brake line and did not have any problems.




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[rascole]

These are Crown too, emailed them so hope to here back from them tomorrow. Going to dealership tomorrow too to see what they have for new ones.

 

[5gn-h3t]

The shiny spot on your old lines is where they seal. Don't worry about o-rings.

 

[rascole]

So finally got some answers. Went to the dealership across from my work and 2 mechanics were equally confused. They said there should be no O ring and these must have been added after it left the factory. I did get a call back from John at Crown Performance and he said they have seen GM hoses that come from the manufacturer that are supplemented with O rings but it is a rarity. So all hoses are on and it's back on the road.