2013 Hino 338: Oil Cooler & Filter Housing

jeffcarl

Seasoned Expediter
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Radiator was leaking a bit, so I topped it off. Ran it up to temp & stopped to look for leaks, Found oil pouring from the radiator overflow. Dealer said it's the oil cooler and not an uncommon problem. I'm trying to get the filter housing/oil cooler off and it looks like the turbo has to come off, but the dealer told me that the filter housing/cooler could be pulled without disturbing the turbo. Any advice would be deeply appreciated. Thank You!
 

greasytshirt

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The turbo has to come off.

Don't separate the cooler element from the base. Just replace the few d-rings on the base. The flat side goes toward the base, curved toward the block.
 

jeffcarl

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Thank you for the reply. Do you mean then that the problem is probably not the cooler itself but the d-rings?
 

greasytshirt

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I misread what you said. The oil cooler IS suspect. Your dealer days it's common, but that has not been my experience.

The cooler itself is #3 in the picture, and the d-rings are #2. On the occasion that we've replaced an oil cooler, we just order the entire assembly.
 

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jeffcarl

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I have the manual with that page. My dealer also said that they usually replace the whole assembly. Is the turbo removal a difficult task?
 

jeffcarl

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Also, does the alternator have to come off too? Other stuff? I was trying to tackle this with my own forces, but it may be too much at this time.
 

greasytshirt

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The alternator can stay.

It's just nuts and bolts, but some of them are kind of a bear to get to and can be pretty tight. The biggest risk is breaking studs or mangling nuts on the turbo or downpipe. Your first attempt may be frustrating.
 
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