D4H Fan Bearings

JSLBNY · Apr 6, 2016

I have to replace the fan bearings on an 89 D4H Series 3. I was able to get the fan blade and adapter off but the main bolt (#4 in the drawing) wont come out because the radiator is in the way. Is there any trick to getting this out or do I have to pull the radiator?

Nige · Apr 6, 2016

Without a Serial # it's difficult to be exact, but is it possible to remove the complete fan drive from the front of the engine by taking out the bolts #2 (I assume there are 4 of them)...? You could replace the bearings and then reinstall the complete assembly the same way as it was removed.

kshansen · Apr 6, 2016

Agree with Nige, even if you could get the bolt out I'm doubting you would have room to slide the hub off the shaft. That whole assembly on a D4 should not be that heavy with fan off it. Might be a good idea to put a sheet of cardboard or thin plywood between the radiator and the fan drive just in case you slip.

JSLBNY · Apr 6, 2016

Got her all fixed up today, just took the whole assembly off the front of the engine and it wasn't too bad. Thanks for the replies

pittedmess · Apr 7, 2016

kshansen said:
Agree with Nige, even if you could get the bolt out I'm doubting you would have room to slide the hub off the shaft. That whole assembly on a D4 should not be that heavy with fan off it. Might be a good idea to put a sheet of cardboard or thin plywood between the radiator and the fan drive just in case you slip.

A+++ With protecting the radiator. This man has been around the block a few times.

D4H Fan Bearings

JSLBNY

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Nige

Senior Member

kshansen

Senior Member

JSLBNY

Member

pittedmess

Active Member