M8200 Coolant Flush Question

akcooper9

New member

Equipment
M8200
May 29, 2025
3
3
3
Oklahoma
Working on flushing the coolant. Pulled the small lower rad hose as the manual says and found this plug in the connector? Is this right or should it be a flow through connector? Pictures of the part on line don't exist. I noticed the M6800 doesnt have this at all as it routes to the oil cooler vs the m8200 and m9000s route this house to the block.

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Russell King

Well-known member
Lifetime Member

Equipment
L185F, Modern Ag Competitor 4’ shredder, Rhino tiller, rear dirt scoop
Jun 17, 2012
6,225
1,923
113
Austin, Texas
I agree that is a very odd thing to find. It makes no sense to plug off a radiator hose like that. Why not just cap off at the radiator if you don’t need the flow??? And Kubota has one continuous hose between points on some M8200 models! And on some models that hose connects to the engine while on others it connects to an oil cooler (in the filter base).

But I don’t know what the part looks like! But the name of the part is “joint - drain” so that implies that it is used to drain the radiator and the block. See below. I believe you have that model tractor but you need to verify that is the correct model diagram. Please research all the listing for M8200 models and see which is the correct one for your tractor. The diagram below is the DT CAB version (I think).
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TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
9,671
5,099
113
Myersville, MD
windyridgefarm.us
Working on flushing the coolant. Pulled the small lower rad hose as the manual says and found this plug in the connector? Is this right or should it be a flow through connector? Pictures of the part on line don't exist. I noticed the M6800 doesnt have this at all as it routes to the oil cooler vs the m8200 and m9000s route this house to the block.

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View attachment 157566
I think that's supposed to be hollow. Have you tried to open it up?

Dan