Fan Clutch repair

1985 - Present, Questions, discussions, regarding anything related to the Humvee. (NO AUCTION or EBAY)

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Mark Rozak
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Fan Clutch repair

Post by Mark Rozak » Sun Nov 26, 2017 6:20 pm

Which manual covers the servicing of the fan clutch? I've scoured the 20-1, 20-2, 34 series.


Mark Rozak
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Re: Fan Clutch repair

Post by Mark Rozak » Sun Nov 26, 2017 6:22 pm

I have one attached to the pulley. Spring applied pressure released. 90psi max could be applied to allow free spin, (to allow access to hex head bolts) however fitting is broken!

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Sgt Bennett
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Re: Fan Clutch repair

Post by Sgt Bennett » Mon Nov 27, 2017 4:50 am

TM 9-2320-280-20-2
3-78 Fan Drive and Fan Blade Maintenance
Gordon Bennett

1985 M998 HMMWV
1986 Bombardier Iltis, basic
1986 Bombardier Iltis, tailgate
1977 M151A2 USMC

Mark Rozak
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Re: Fan Clutch repair

Post by Mark Rozak » Tue Nov 28, 2017 4:29 pm

That manual shows assembly removal and assembly replacement, not repair or servicing of the seals. Bench test?


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