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D2 Full Width Radiator - Best Way to Bypass Oil Cooler?

D2 Full Width Radiator - Best Way to Bypass Oil Cooler?

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rhartwick
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Looking at a new radiator for my D2, and read all the older threads I could find on going to the full width core #6H9853 and eliminating the oil cooler. This seems like a sensible way to go. What is the best way to connect the oil lines to bypass the oil cooler? Just use a rubber hose with good quality clamps? I'd hate to have a stick or a rock push off the oil lines with just a rubber hose on them. Alternatively, could one just change out the oil filter base housing to the new D2 style that didn't use an oil cooler? Not sure where I could find a newer housing, except try to find a salvage part, or if Cat might still have such housings in stock? Another way might be to braze a "U" type thing to make a clean and neat bypass loop. Any suggestions from those who have gone this route?
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Mon, Dec 30, 2019 10:04 PM
Steve A
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I would do a welded metal bypass or cap off the oil cooler lines and remove the bypass plunger and spring. under the oil filter.

I would want to verify the bypass only served the cooler and not the filter, I have had one apart but do not remember the details.
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Mon, Dec 30, 2019 11:07 PM
Rome K/G
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Reply to Steve A:
I would do a welded metal bypass or cap off the oil cooler lines and remove the bypass plunger and spring. under the oil filter.

I would want to verify the bypass only served the cooler and not the filter, I have had one apart but do not remember the details.
There are plugs from Cat to plug the holes on the filter housing. Two 2D2182 plugs and two 8B3410 gaskets. Book shows the sring removed from the bottom plug but the plunger is still used.
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Tue, Dec 31, 2019 1:51 AM
BigAgCat
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Reply to Rome K/G:
There are plugs from Cat to plug the holes on the filter housing. Two 2D2182 plugs and two 8B3410 gaskets. Book shows the sring removed from the bottom plug but the plunger is still used.
Just connect the output to the input.

My D6 just has like 2-3 inches of hose connecting the output to the input since I have no oil cooler.
Cat D6 5R
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Tue, Dec 31, 2019 3:07 AM
Old Magnet
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Reply to BigAgCat:
Just connect the output to the input.

My D6 just has like 2-3 inches of hose connecting the output to the input since I have no oil cooler.
Get "dash 10" (-10) O-Ring Face Seal plugs from Hydraulic Fittings source. They a 1"-14 tpi straight thread along with some pipe dope. On mine I remove the bypass spring and plunger.
Attachment
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Tue, Dec 31, 2019 12:05 PM
rhartwick
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Reply to Old Magnet:
Get "dash 10" (-10) O-Ring Face Seal plugs from Hydraulic Fittings source. They a 1"-14 tpi straight thread along with some pipe dope. On mine I remove the bypass spring and plunger.
Attachment
OM,

That looks like a tidy and easy solution. I just want to confirm though, so as not to risk messing up any oil flow in the engine, that both the plunger and spring are removed from the filter base? That would conflict with what Rome said above to remove the spring but not the plunger.

Just want to make certain so as not to risk the engine.

Thanks.
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Tue, Dec 31, 2019 7:49 PM
Rome K/G
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Reply to rhartwick:
OM,

That looks like a tidy and easy solution. I just want to confirm though, so as not to risk messing up any oil flow in the engine, that both the plunger and spring are removed from the filter base? That would conflict with what Rome said above to remove the spring but not the plunger.

Just want to make certain so as not to risk the engine.

Thanks.
Thats what the late D2 parts book shows, just the plunger and no spring. Not sure if that makes any difference leaving the plunger in or not, the spring would keep it seated.
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Tue, Dec 31, 2019 8:37 PM
Old Magnet
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Reply to Rome K/G:
Thats what the late D2 parts book shows, just the plunger and no spring. Not sure if that makes any difference leaving the plunger in or not, the spring would keep it seated.
I don't see any point in leaving the plunger in there so I remove it as well.
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Tue, Dec 31, 2019 11:25 PM
willwingo
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Reply to Old Magnet:
I don't see any point in leaving the plunger in there so I remove it as well.
Remove the plunger and the spring.

Surplus Center has "Hex Head ORFS M plugs" on page 99 in the catalog, part # 9-ff2408-10, $2.35 each.

www.surpluscenter.com
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Wed, Jan 1, 2020 1:25 AM
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