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#848421 05/08/21 3:49 pm
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Kevin E Offline OP
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Hi all,

This is where I say to myself I should take more notice when stripping things down, take photographs and make notes.

I think this is a pretty straightforward issue but would you agree that I have the timing marks aligned properly on my A65 timing gears.

The crankshaft pinion to idler is a no doubt but the mark on the camshaft pinion is not so positive.

Cheers,

Kev E

Timing Gears 01.JPG Timing Gears 02.JPG
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The picture in the factory Manual shows the same relative alignment.
[Linked Image from live.staticflickr.com]

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Kevin E Offline OP
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Originally Posted by DMadigan
The picture in the factory Manual shows the same relative alignment.
[Linked Image from live.staticflickr.com]

Yes I have the workshop Manual and thought it was correct but just wanted to get some confirmation from the more experienced BSA guys on here as the timing mark on my camshaft pinion could do to be a bit more positive.

Thanks

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Hi Kevin

Yes, your good to go.

John

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Looks good to me.


Bill
1974 Norton Commando
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You got it right. I will admit the mark on your camshaft is a little crooked, which could lead to suspicion. All the marks I've seen before are more precise-looking. It does point to the tooth though, not to the valley.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
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It’s worth noting that the key way slot on the end of the crank is in line with the journals, so when the key way is dead north the crank should be at TDC. When this is the case the dot on the crank pinion should be in align with the timing gear.

I point this out because there are some crank pinions out there which are out as much as 20°(I have one)


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (now rebuilt)
67’ D10 sportsman (undergoing restoration)
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Kevin E Offline OP
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Thanks Allan,

Just moving on from the timing marks. I have a brand new camshaft, bushes, breather disc and spring. When I have the camshaft pinion nut torqued up I can push the pinion back against the breather spring by just over 0.004”.

The Manual says the camshaft end float should be Nil (spring-loaded). Does this mean that the amount of movement I have measured against the spring is normal and acceptable?

Cheers,

Kev E

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Yes there will be movement against the spring.


Bill
1974 Norton Commando
1966 Lightning
1965 Lightning Rocket
1966 Norton Atlas
1967 Norton Atlas
1948 Panhead
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