JCB 3C II 1973 replace Fan Belt

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Dave-OLW
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JCB 3C II 1973 replace Fan Belt

Post #1 by Dave-OLW » Thu Aug 06, 2026 9:36 am

JCB 3C II 1973 Engine serial No. 6797 Leyland 4/98NT.
How to replace Fan belt, remove hydraulic pump/just unbolt from pulley?

Thanks David


essexpete
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Re: JCB 3C II 1973 replace Fan Belt

Post #2 by essexpete » Thu Aug 06, 2026 12:47 pm

It is many years since I changed a fan belt on a 3C, but I think if you can remove the bolts holding the shaft to the crank pully, you can get enough space by sliding the shaft on the splines. It is a bit of a pig if I remember correctly. Some tie back a spare belt at the same time. I found that a waste of time as the couple of times I did that, the belt was either rubbed or oil contaminated.
Last edited by essexpete on Thu Aug 06, 2026 7:24 pm, edited 1 time in total.


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Dave-OLW
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Re: JCB 3C II 1973 replace Fan Belt

Post #3 by Dave-OLW » Thu Aug 06, 2026 2:44 pm

Thanks
I'll try that

David

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Re: JCB 3C II 1973 replace Fan Belt

Post #4 by Billy26F5 » Sat Aug 08, 2026 11:25 pm

Just unbolt the shaft from the pulley, don't put a second belt as Pete says for those reasons. Bolts are awkward.
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