RADIATOR DRAIN------Petcock------sp.

lenray · Oct 20, 2014

Not sure about the spelling---When I want to drain do I go CW or CCW on the TEE HANDLE???

old popper · Oct 20, 2014

Should go ccw to drain. At least that is the way most are.

leej · Oct 20, 2014

Not so sure this is the case on some foreign cars and
older tractors. (I mean old tractors) leej.

JMS/.MN · Oct 20, 2014

Think of it like screwing a bolt. Turn it out to let the water out.

dr sportster · Oct 21, 2014

On any drain plug you are pushing the wrench with your right hand towards the left or clockwise. But if you were lying on the floor facing it then it would be CCW rotation.

greywolf224 · Oct 21, 2014

(quoted from post at 08:57:30 10/21/14) On any drain plug you are pushing the wrench with your right hand towards the left or clockwise. But if you were lying on the floor facing it then it would be CCW rotation.

What if you are using a reversible wrench?
:roll: :roll: :roll:

Carlyle hoffman · Oct 21, 2014

In my life time, RIGHTY TIGHTLY ---LEFTY LOOSEE ??????

MarkB_MI · Oct 21, 2014

Most have left-hand threads. Turning counter-clockwise screws them IN and OPEN.

Buzzman72 · Oct 21, 2014

Depends on the vehicle. Those with standard petcocks, like old-timey cars, trucks, and tractors, turn counterclockwise to open. But I've had some newer ['80's-up] cars and such that had left-hand threads.

So...it just depends.

dr sportster · Oct 21, 2014

That will only work for left hand threads .

Dan in North Houston · Oct 21, 2014

It depends. It's hard to describe, but I'll try. I've seen some that have a stem that passes completely through the petcock housing, so that the seat is actually outside the end of the housing. Normal clockwise right-hand tightening rotation actually pushes the seat off the end and allows fluid to drain. Counter clockwise left hand rotation pulls the seat down on the seal.

Bob · Oct 21, 2014

GOOD description of how that style opens inward.

Gotta disagree with you on the rotation, though.

Most (if not all) use a left-hand thread, so turning them left/CCW makes the stem move inward and open the valve.

It's pretty much standard between the ones that opn in and the ones that open outward... Left/CCW opens them and Right/CW closes them.

lenray · Oct 21, 2014

Thanks guys for the help--it is a JOHN DEERE 3010 gasser----Answers here have it going both ways-----Going to try the CCW..........

Two Dogs · Oct 21, 2014

What if your clock runs backwards? TDF

Bob · Oct 21, 2014

Yep, that'll do it!

dr sportster · Oct 21, 2014

If your clock runs backwards then use RCW and RCCW.

RADIATOR DRAIN------Petcock------sp.

lenray

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old popper

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leej

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JMS/.MN

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dr sportster

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greywolf224

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Carlyle hoffman

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MarkB_MI

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dr sportster

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Dan in North Houston

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