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Frame & Suspension / Re: TX500 shock absorber dimensions
« Last post by ken01 on October 15, 2018, 08:59:33 AM »
Okay, to make it a little easier, I have attached a photograph (I think) which I liberated from google of an OEM shock absorber for a TX500, 500A, XS500B, on which I have marked the two measurements I am chasing... If someone with with an original shock absorbers would be so kind as to quickly put a rule against theirs and give me the two measurements (A & B), I would be ever so grateful.

Thanks


Ken

 
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Engine & Transmission / Re: camshaft timing
« Last post by guylr on October 15, 2018, 03:40:00 AM »
The pointer must be reset to align with the T left mark when the left piston is exactly at top dead center. You will need either a dial indicator or a piston stop tool to find TDC.

Guy
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Engine & Transmission / Re: camshaft timing
« Last post by remi on October 15, 2018, 02:58:21 AM »
thanks you  for your reply,

 i bought the bike as it with a fresh head just rebuild.  the cranckcase dont seems to be allready open so i dont thin the breaker shaft has  been touch, but  The governor has been mooved i guess, because the paint-lock on the screw have been brock.
First should i try to time the governor ? don't you know how to?
best regards

Remi
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Engine & Transmission / Re: camshaft timing
« Last post by guylr on October 14, 2018, 11:01:11 PM »
Welcome Remi. Were the governor assembly and or the breaker shaft removed during this repair? If so are you certain that the breaker shaft was timed correctly and the governor assembly assembled using the locating pin?  If those are correct the can timing should follow just as you described.

Guy
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Engine & Transmission / camshaft timing
« Last post by remi on October 14, 2018, 09:00:55 PM »

hello, i'm Remi i live in canada and i just had a 77 500 xs.
I have always been passionate about this model and I was lucky to find one

 following a head rebuild it's impossible for me to time up the engine, i explain: i respect all the steps of the owner manual, put the left piston at the top, then go on the  "V" Mark and assemble the camshaft marks with the mark of the caps. but from the first turn of the engine (by hand) the left piston hits the intake valve. I do not understand what is going on, one of you has already encountered this problem.
please excuse my english this is not my first language
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Frame & Suspension / Re: TX500 shock absorber dimensions
« Last post by ken01 on October 12, 2018, 11:11:14 PM »
Hey mate

Looking at the shock absorber face on… the bushes sit in an eye at the top and bottom of the shock absorber.

Looking at it three dimensionally (height, length and width)…. I know the diameter (which is height and length), but what I need is the ‘width (depth)’ measurement of the top and bottom eye.

Just to explain why I am chasing this… my bike has a set of unknown brand aftermarket shock absorbers on it, which it has had since I picked it up…. The springs are too wide on them, and to fit, the top eye has been spaced outwards and a reduced head nut has been fitted to the bottom.

I want to order a good set of shock absorbers for the bike. Order the ones I want, I have to provide three measurements. I do not have a set of factory TX500 shock absorbers to obtain the following measurements.
1.   Measurement between centres of the top and bottom eye – which reading an earlier post, suggests this measurement is 320mm
2.   I/D of the bush (which is easy enough, as it is the same as the nominal O/D of the mounting lugs)
3.   The width (depth) of the eye (which the bushes sit in)

As mentioned, I don’t have an original set to measure so I don’t know if measurement ‘3’ is the same for the top and bottom eye, or if they are two different measurements.

So I’m hoping that someone one here with a TX500, 500A or XS500B, that still has the original shock absorbers would be kind enough to provide me with the top and bottom measurement.

Regards

Ken
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Frame & Suspension / Re: TX500 shock absorber dimensions
« Last post by CoyoteFord on October 12, 2018, 06:29:40 PM »
The diameter of the mounting eye? They are rubber bushed 
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Engine & Transmission / Re: Low vacuum
« Last post by nk140 on October 12, 2018, 05:57:14 PM »
There is no vacuum spec that I know of. If compression is in spec then vacuum should be sufficient.

Guy

Both cylinders are 150+ psi.  Just weird that the engine didn't run rough when pulling the vacuum line.  Like I said the bike runs great other than idling conditions and rpms are slow to return to idle after letting off the throttle.
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Engine & Transmission / Re: Low vacuum
« Last post by guylr on October 12, 2018, 01:06:45 PM »
There is no vacuum spec that I know of. If compression is in spec then vacuum should be sufficient.

Guy
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Engine & Transmission / Re: Low vacuum
« Last post by nk140 on October 11, 2018, 02:39:40 PM »
what kind of vacuum do these bikes normally have?  I can't find a spec.
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