Timing cams and parts

Information relating to the Matchless G80 or AJS Model 18 500cc Heavyweight.
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Re: Timing cams and parts

Postby Pharisee » Tue Dec 05, 2017 10:21 am

cfaber wrote:Does anyone happen to know the part number for the 5 fixing bolts holding the mag chain cover on the crank case? Also, the part number for the 6 fixing bolts holding the mag chain face cover on the mag chain cover?


The 5 screws to secure the timing gear cover are 000482
The 4 short chain cover screws are 000455
The 2 long chain cover screws are 021383

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Re: Timing cams and parts

Postby cfaber » Tue Dec 05, 2017 3:26 pm

clive wrote:Cfaber assuming it's for your 54 model 18 try looking here. http://www.archives.jampot.dk/book/Spares_lists/1954_AJS_Singles_Spares_List.pdf
You won't get far without a parts list.


Hi,

Thanks yes, It is for my 54 18S, and I did take a look at the parts list, it's not clear to me the part number though which is why I was asking.

Thanks!
Last edited by cfaber on Tue Dec 05, 2017 3:29 pm, edited 1 time in total.

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Re: Timing cams and parts

Postby cfaber » Tue Dec 05, 2017 3:27 pm

Pharisee wrote:
cfaber wrote:Does anyone happen to know the part number for the 5 fixing bolts holding the mag chain cover on the crank case? Also, the part number for the 6 fixing bolts holding the mag chain face cover on the mag chain cover?


The 5 screws to secure the timing gear cover are 000482
The 4 short chain cover screws are 000455
The 2 long chain cover screws are 021383


Thank you!

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Re: Timing cams and parts

Postby 56G80S » Wed Dec 06, 2017 8:16 pm

I got bought a selection of shim sheet through Ebay and plan to punch the shims to suit once I drop the cover off, refit with some soft electrical solder and measure the play.

Johnny B

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Re: Timing cams and parts

Postby zwarts » Wed Dec 06, 2017 8:42 pm

If the engine is dismantled, there's no need for shims. The end float of both cams is easily set by moving the cam bushes in their housings. This is clearly shown in all the handbooks and is the technique I have always used, without any problems.

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