Different fans for 3116?

[Awesomeness]

The 20-3 TM says "NOTE: Discard fan clutch assembly PN 1090-08000-03 and replace with fan clutch assembly PN 1090-08000-01."

I had the older -03 fan, and am replacing it with the newer -01 model.

The TM also says "NOTE: Discard engine fan PN 4035-41393-74 and replace with engine fan PN 12421972." Is that just because of an improvement, or because the new clutch only mates up to the new fan?

UPDATE: Read future posts... the old fan DOES NOT fit on the new clutch.

 

[Smike740]

The new fan is definetly improved, the hub is now steel vs the old one was aluminum. Also if I remember correctly it doesn't use the rubber bushing at the center. I am not certain that the old one will not mount, however I would definetly put the upgraded fan on since others have had failures.

 

[scottmandu]

Eyeballing the new versus old fan clutch appears to look the same.

 

[Awesomeness]

The old engine fan PN 4035-41393-74 DOES NOT fit on the new fan clutch assembly PN 1090-08000-01, for anyone else who might try this in the future. The new clutch has studs, where the old one used bolts, and those studs are in a slightly larger bolt circle.

Here's a picture of the old fan's spacer plate laying on the new clutch.