Drain cock valve assembly

VMAX  Forum

Help Support VMAX Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
So I’m attempting to pull out the drain plug to replace o rings. I drained fluid and was able to get the screw loose and pull the plug out almost enough. The thing is I’ve got a header on the bike and one of the pipes is directly in front of the plug. Damn! So do I loosen the header and take a chance with that leaking when I put it back together or do I try and disconnect the drain plug from the hoses and water pump? Hmmmm dilemma, what are your thoughts? Thanks
 

Attachments

  • A87966BF-AF8C-4A4B-91A0-FFEEF222198A.jpeg
    A87966BF-AF8C-4A4B-91A0-FFEEF222198A.jpeg
    106.2 KB · Views: 26
Ended up taking it off, wasn’t that hard. Cleaned it up and new o rings and back together. Filled up the coolant and ran to temp, no leaks and it’s staying at operating temp. So I think that was successful.
 

Attachments

  • 08E6EB47-D25A-4114-9C86-2615A94E7080.jpeg
    08E6EB47-D25A-4114-9C86-2615A94E7080.jpeg
    397.7 KB · Views: 22
  • 4A4BDA03-ED25-4CD0-BDEF-229ADF3D85E4.jpeg
    4A4BDA03-ED25-4CD0-BDEF-229ADF3D85E4.jpeg
    276.5 KB · Views: 23
  • 761E12CB-BEB7-4933-B978-DCB8B95A6C05.jpeg
    761E12CB-BEB7-4933-B978-DCB8B95A6C05.jpeg
    122.4 KB · Views: 24
  • B717D162-5EFA-4E14-B576-5F8D0195369D.jpeg
    B717D162-5EFA-4E14-B576-5F8D0195369D.jpeg
    273.9 KB · Views: 21
Of course I fully restore these when restoring my bikes. I know overly anal !
But I can't tell you how many I find with the plastic hex head already destroyed/rounded by people using pliers or some other inappropriate tool to turn these or attempt to pull them out without pulling the "Set " screw first. I use a 1/4 inch socket drive screwdriver with the correct sized six point socket. Use a 12 point and you may round it off it is corroded in place.
I can almost always tell the ones that have never been touched, which is good for part restoring but a bad sign for bike maintenance history.
Thread resurrection..

Wondering if I can change out the oring without removing the assembly, considering the hoses are 38 years old..
 
I have a bunch of seals & o-rings that I will replace either on spec or because they're already leaking. :rolleyes:

I just checked my drain cock valve, and after the set screw is out, it rotates with just finger strength, albeit with some resistance.

It turns out the ball isn't even there. When the valve is in the on position ("on" pointed 2 o'clockish), the empty hole is visible on top.

Funny, that's one of the few places where it isn't leaking.

From what I'm reading here, some have the ball missing, and others have run it in both the on & off position with no noticeable difference.

If so, this assembly is an odd critter we have to deal with.
 

Latest posts

Back
Top