C10 power steering lines

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Jrgunn5150

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Ionia Mi
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J.R.
Truck Year
1979
Truck Model
C10
Engine Size
6.slow
So how many types are there?

My truck is a 79, I bought a new line for a 79, and it threaded into the box, but the center hardline portion is very loose, and it leaks like a sieve.

The only conclusion I can come too is I must have the wrong line, but I thought the newer stuff was metric? So wouldn't that just not thread into my box?

Idk, I'm frustrated, at least I filled with ATF that was like 25% rainwater :bleh:
 

C10MixMaster

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Location
Kingman AZ
First Name
Ben
Truck Year
1977
Truck Model
C10 BIG10
Engine Size
ZZ4 350
So how many types are there?

My truck is a 79, I bought a new line for a 79, and it threaded into the box, but the center hardline portion is very loose, and it leaks like a sieve.

The only conclusion I can come too is I must have the wrong line, but I thought the newer stuff was metric? So wouldn't that just not thread into my box?

Idk, I'm frustrated, at least I filled with ATF that was like 25% rainwater :bleh:


seems to me some of these use a flare and some used an oring. compare it to the original.
 

C10MixMaster

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Ben
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1977
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C10 BIG10
Engine Size
ZZ4 350
The original is 18 months gone.
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could also be a bad oring
 

Jrgunn5150

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C10
Engine Size
6.slow
Mine, the line anyway, doesn't have an o ring. I just went to AutoZone and confirmed it's the right line for a 79,but it would seem to be the wrong line for my box.

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Raybo135

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Arvada, Colorado
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Raymond
Truck Year
1976
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K10 Silverado
Engine Size
400
So how many types are there?

My truck is a 79, I bought a new line for a 79, and it threaded into the box, but the center hardline portion is very loose, and it leaks like a sieve.

The only conclusion I can come too is I must have the wrong line, but I thought the newer stuff was metric? So wouldn't that just not thread into my box?

Idk, I'm frustrated, at least I filled with ATF that was like 25% rainwater :bleh:
I am having the same problem with my pressure line. It looks different than my original. Here are 2 pics. The new one is interfering with adjusting/tightening the pump belt. No one has the exact replacement as the original. When I remount the pump, i can't get the line to screw into the steering box.

Sent from my SM-G960U using Tapatalk
 

Raybo135

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Location
Arvada, Colorado
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Raymond
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1976
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K10 Silverado
Engine Size
400
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could also be a bad oring
Here are pics of my old line and the new line.
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Sent from my SM-G960U using Tapatalk
 

C10MixMaster

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Location
Kingman AZ
First Name
Ben
Truck Year
1977
Truck Model
C10 BIG10
Engine Size
ZZ4 350
Here are pics of my old line and the new line.
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Sent from my SM-G960U using Tapatalk

those are both flare fittings so no orings.

does the steering box have the inverted part of the flare?
 

C10MixMaster

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Location
Kingman AZ
First Name
Ben
Truck Year
1977
Truck Model
C10 BIG10
Engine Size
ZZ4 350
Mine, the line anyway, doesn't have an o ring. I just went to AutoZone and confirmed it's the right line for a 79,but it would seem to be the wrong line for my box.

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yes those are miss matched try a hose from a later truck
 

Jrgunn5150

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Joined
Jan 11, 2016
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2,739
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1,412
Location
Ionia Mi
First Name
J.R.
Truck Year
1979
Truck Model
C10
Engine Size
6.slow
I am having the same problem with my pressure line. It looks different than my original. Here are 2 pics. The new one is interfering with adjusting/tightening the pump belt. No one has the exact replacement as the original. When I remount the pump, i can't get the line to screw into the steering box.

Sent from my SM-G960U using Tapatalk


Mine looked the same as far as bends, I just had the wrong fitting.

Apparently in spite of being a 79 and every book saying the other style didn't start until 80, mine did.
 

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