Sprockets

If you are restoring or looking to restore an old Fergie and need advice, this is the place to ask..

Sprockets

Postby John V » Sun Apr 15, 2018 7:25 pm

Lads are these sprockets serviceable or do they need changing out. I know the cam sprocket can be had but what about the oil pump drive sprocket??
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Re: Sprockets

Postby Grunt » Sun Apr 15, 2018 11:18 pm

They’re not under a great deal of load and it’s taken the best part of 60 years to get that worn, I’d say they were good enough for another 60 years.
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Re: Sprockets

Postby Hiawatha » Mon Apr 16, 2018 8:07 am

How many teeth must turn before the rotor moves ? If it is more than one tooth then it is recommended that both the chain and sprockets should be replaced . That said as Grunt suggests they will probably last longer than most of us .
-------- 1952 TED, 1957 FE35 Grey and Gold Deluxe
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Re: Sprockets

Postby John V » Mon Apr 16, 2018 9:24 am

That’s a new engine and it’s always in the back of my mind but maybe it’s me over thinking things again. The teeth look uniform enough but should they have a flat edge to them?.
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Re: Sprockets

Postby Hiawatha » Mon Apr 16, 2018 10:17 am

Old Geoff says that if the points of the teeth are sharp and pointed the sprockets should be changed.
-------- 1952 TED, 1957 FE35 Grey and Gold Deluxe
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Re: Sprockets

Postby John V » Mon Apr 16, 2018 12:30 pm

Hiawatha wrote:Old Geoff says that if the points of the teeth are sharp and pointed the sprockets should be changed.

Well that is the case for the cam and injection pump,The later could be a problem.
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Re: Sprockets

Postby John V » Mon Jul 30, 2018 11:17 pm

Got it done although it was a bit of a pain in the arse because the new cam sprocket is thinner and will need bolts replacing unless you add more washers but I love hardship and went the long way around and replaced the bolts and new washers. The sprocket is a tight press fit and you need to watch out for the punch marks and line the sprockets up and also scribe new timing lines. I also replaced the crank shaft sprocket and discarded the shims as the sprocket is a little thicker.
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