The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 12-28-2022, 10:42 PM   #1
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
What is this chopped tube sticking out of this

Hi. Can you tell me if this is normal and okay? I'm replacing the wiring on a truck I just bought and I keep finding random odd looking cut pieces. What is this random cut tube. And for that matter, can you educate me? What is the part it's sticking out of? To the left of the picture is the front of the truck
Attached Images
 
K10-Kansas is offline   Reply With Quote
Old 12-28-2022, 10:59 PM   #2
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,806
Re: What is this chopped tube sticking out of this

It's the other end of the hose you asked about in your previous post - the vent tube for the differential.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote
Old 12-28-2022, 10:59 PM   #3
cwcarpenter98
Senior Member


 
cwcarpenter98's Avatar
 
Join Date: Jan 2018
Location: Hickory Flat, GA
Posts: 4,426
Re: What is this chopped tube sticking out of this

I think that's the vent tube for the front diff.

I would also think you would want that longer and higher on the frame, especially if you think you might find yourself rolling through a water crossing
__________________
Christian Carpenter

1963 C10 - Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1963-ish truck bed trailer - Half-Wit

1981 C10 - Penny 305, th350

1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
cwcarpenter98 is offline   Reply With Quote
Old 12-28-2022, 11:15 PM   #4
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
Re: What is this chopped tube sticking out of this

Quote:
Originally Posted by truckster View Post
It's the other end of the hose you asked about in your previous post - the vent tube for the differential.
Its wild that the one I asked about the other day is a yellow curly 10 foot hose and this one is a 6 inch hose. Is there a recommended length? Also I am assuming I should put a male-male adapter on this one and then add a few feet of hose to that and mount it up high. When mounting it at an elevation do I also point the last few inches down a little?
K10-Kansas is offline   Reply With Quote
Old 12-28-2022, 11:16 PM   #5
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
Re: What is this chopped tube sticking out of this

Quote:
Originally Posted by cwcarpenter98 View Post
I think that's the vent tube for the front diff.

I would also think you would want that longer and higher on the frame, especially if you think you might find yourself rolling through a water crossing
Thanks. Good to know. I didn't know there was a front differential.
K10-Kansas is offline   Reply With Quote
Old 12-28-2022, 11:24 PM   #6
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
Re: What is this chopped tube sticking out of this

Hey Truckster, I've got an orange 71 k10 and my brother drives a white either 74 or 78 Camaro. We could take that exact same picture you have there. Funny coincidence.
K10-Kansas is offline   Reply With Quote
Old 12-29-2022, 12:25 AM   #7
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,806
Re: What is this chopped tube sticking out of this

Quote:
Originally Posted by K10-Kansas View Post
Its wild that the one I asked about the other day is a yellow curly 10 foot hose and this one is a 6 inch hose. Is there a recommended length? Also I am assuming I should put a male-male adapter on this one and then add a few feet of hose to that and mount it up high. When mounting it at an elevation do I also point the last few inches down a little?
It's the hose you're holding in your hand in this post:

http://www.67-72chevytrucks.com/vboa...d.php?t=840781

Yeah, that's now my son's Camaro. We were just discussing what he wants to do with it today.
__________________
I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
truckster is offline   Reply With Quote
Old 12-29-2022, 07:35 AM   #8
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
Re: What is this chopped tube sticking out of this

Quote:
Originally Posted by truckster View Post
It's the hose you're holding in your hand in this post:

http://www.67-72chevytrucks.com/vboa...d.php?t=840781

Yeah, that's now my son's Camaro. We were just discussing what he wants to do with it today.
Ohhhhh,,,, gotcha. The other pic, with the short black 6 inch hose cut and mounted to the frame. That makes sense. Thanks!
K10-Kansas is offline   Reply With Quote
Old 12-29-2022, 09:07 AM   #9
K10-Kansas
Senior Member
 
K10-Kansas's Avatar
 
Join Date: Nov 2022
Location: Kansas City
Posts: 468
Re: What is this chopped tube sticking out of this

Thanks for cluing me in to what this even is. I went and looked up differential info and found some stuff I'm glad to learn:

The differential vent tube is there to vent if the differential is overfilled with oil or becomes too hot.

If your differential seals are leaking then your vent tube is probably clogged.

The vent tube should be mounted above the differential with the end of the tube slightly lower than the majority length of the tube.

The vent tube should be capped with a check valve.

Pull the tube off of the differential to stick a poker into the differential to see if there is an oil glob blocking the vent nipple.

While the tube is off, blow through the tube towards the check valve to make sure the tube is free of blockage.

Change your differential fluid at recommended intervals.

Replace your differential cover seal at recommended intervals.
K10-Kansas is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:22 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com