freeze plug?

bobby g

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b2320
Dec 17, 2023
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Saxonburg Pa.
I have a widowed friend who is trying to sell her late husbands b2320 tractor. it was used all summer cutting grass and her son had it out the last week of November (we live in western Pa.). he noticed a severe hydraulic oil leak and parked it in the barn. I checked it out and from underneath, above the output shaft, where it comes out of the clutch housing, it appears that a freeze plug is missing. question ; 1. is this a freeze plug? 2. can this plug be purchased and tapped back in with a block of wood or does it need to be pressed in. thanks for any help.
bob g
 

Henro

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Seems like a freeze plug would cause a coolant leak and have nothing to do with hydraulic fluid.

Might be helpful for someone that knows if you could post a picture of the item in question, or even just the hole you are referring to.
 
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85Hokie

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I'm with Henro - Freeze plugs are used to allow antifreeze to pop out the plug rather than crack the block.

Picture would be very helpful as mentioned
 

North Idaho Wolfman

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Your going to need to post a picture of what plug your talking about.
The hydraulic system has NO freeze / frost plugs.
 
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TheOldHokie

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sorry its a bad picture but the hole that you see above the shaft is in the clutch housing
Csnt tell anythimg from the picture but Welch plugs are used in many castings including transmissions.

Their purpose is not freeze protection - its to close the holes left when the sand cores used in the casting process are removed.

Dan
 
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Orange man

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From your picture I think you need part #6A100-12180, looks to be rubber or rubber coated, from parts picture.
 

bobby g

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b2320
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Saxonburg Pa.
the reason I thought it was a freeze plug is because on page 84 of the users manual it says this;

BDraining Clutch Housing Water
The tractor is equipped with a drain plug under the clutch
housing.
After operating in rain, snow or tractor has been washed,
water may get into the clutch housing.
Remove the drain plug and drain the water, then install the
plug again.
(1) Water drain plug

the Drain plug they are referring to is a typical screw in drain plug, not the one that I'm trying to figure out.


https://www.manua.ls/kubota/b2320/manual?p=83
https://www.manua.ls/kubota/b2320/manual?p=85
 

Orange man

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It is not a freeze plug, seals a bearing bore.
 

ken erickson

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I looked at Messicks parts for B2320 and see there are several versions including one they call dual traction. I think it would help to know which Model of B2320 you have. The only thing I could find close to a plug is number 080. It is hard to tell from the exploded view if this goes in the location in your photo or not.

NOTE: I picked one or two different sub models of B2320 so please verify if this plug is what your needing.

Screen Shot 2023-12-17 at 3.39.53 PM.jpeg
 
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Orange man

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Messick's has 4 in stock so it must be fairly common.
 

Orange man

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It seems to fit all the versions
 

bobby g

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sorry orange Man, didn't see your post till after I hit reply. I will take this info to the dealer tomorrow and see if I can just pop it in or if there's more to it. thank you all. I have a Kubota bx25 and will be keeping you all in mind for the next problem. very helpful
 

Orange man

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If you have room I think you should be able tap or push a new one in.
 

85Hokie

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Csnt tell anythimg from the picture but Welch plugs are used in many castings including transmissions.

Their purpose is not freeze protection - its to close the holes left when the sand cores used in the casting process are removed.

Dan

While true for the removal of sand - they are not called FREEZE plugs for the hell of it.

Copy and paste


Freeze plugs stop up the holes left behind by the sand casting process for manufacturing engine blocks. These plugs play an important role in protecting the finished engine block against cold-weather damage by popping out if ice inside the engine presses against the block's walls, releasing the pressure before the block can crack.

Freeze plugs proved especially critical in the days when drivers used plain water as their coolant during the warmer months of the year, then forgot to swap out that plain water for a water and antifreeze mix once temperatures cooled. Even today, they protect engines against coolant leakage and compromised, ineffective antifreeze mixtures.
 
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TheOldHokie

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While true for the removal of sand - they are not called FREEZE plugs for the hell of it.

Copy and paste


Freeze plugs stop up the holes left behind by the sand casting process for manufacturing engine blocks. These plugs play an important role in protecting the finished engine block against cold-weather damage by popping out if ice inside the engine presses against the block's walls, releasing the pressure before the block can crack.

Freeze plugs proved especially critical in the days when drivers used plain water as their coolant during the warmer months of the year, then forgot to swap out that plain water for a water and antifreeze mix once temperatures cooled. Even today, they protect engines against coolant leakage and compromised, ineffective antifreeze mixtures.
I guess that depends on your source of information.

Wikipedia among others:

The slang term "freeze plug" was coined many decades ago out of ignorance of the true purpose of the core plugs - they were never designed to be displaced by water
freezing inside the block due to a lack of an anti-freeze/water mixture and their displacement is merely coincidental if freezing does occur. The sole purpose of a core plug is to literally act as a plug in the holes designed to be in a casting which allows the casting sand to be removed during the manufacture process.
[4]

Going back to the discussion of old 40s vintage Ford N-series tractors. You know what happens when the L-head block freezes? It cracks right next to the "freeze" plugs. A very common ptoblem on those engines.

Obviously core plugs in a transmission case have nothing to do with freeze protection.

Dan
 
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North Idaho Wolfman

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By the looks of the picture it appears you have a HST, if it's not then there is a different plug that fits it.

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