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Old 02-03-2014, 06:06 PM   #46
NW1   NW1 is offline
 
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When installing the automatic cam chain tensioner what pressure should i initially set it at ?


 
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Old 02-03-2014, 06:23 PM   #47
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Quote:
Originally Posted by NW1 View Post
When installing the automatic cam chain tensioner what pressure should i initially set it at ?
You must fully retract the plunger of the ACCT before you install it. You should be able to remove the end cap, and insert a screwdriver inside the ACCT. Turning the screwdriver clockwise will retract the plunger. While keeping the plunger retracted, install the ACCT. Tighten the mounting bolts, and only then release the plunger. Finally, you can re-install the endcap on the ACCT. Technically, the engine should be at TDC when you install the ACCT.

After you properly install the ACCT, you should check the valve clearances. Do you have a manual for your bike? Do you know where the alignment mark for the cam sprocket is located on the cylinder head? Please post some closeup photographs of the cam sprocket and the cylinder head.
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"Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain

2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220

Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894


 
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Old 02-03-2014, 09:28 PM   #48
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Spud has given you excellent guidance, as usual.

I'll add that the hash marks on the cam gear line up with the valve cover to head line, as you suspected. With the tensioner in place and properly adjusted, the hash markes should be in line with the valve cover gasket, and the T line should be visible through the inspection hole.

It is possible that the cam chain jumped a tooth when the tensioner went south, so it should be carefully checked.
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Old 02-04-2014, 01:03 AM   #49
NW1   NW1 is offline
 
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Location: Byron Bay, Australia
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Everythings re-installed with new tensioner spring, piston at TDC, cam sprocket dot alligning with V notch on head (as pictured), flywheel mark visible through window (also pictured) and engine rotates with kik starter.

I now have to readup on checking the valve clearances. I dont have a torque wrench to get into the head for this so it may be a little while till my next post.

Thanks for the help so far.
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Old 02-04-2014, 01:19 AM   #50
SpudRider   SpudRider is offline
 
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You don't need a torque wrench to adjust the valve lash. Follow the procedure in the threads I listed, and you will do well.
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"Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain

2015 Zongshen ZS250GY-3 (RX3)
2006 Zongshen ZS200GY-2 (Sierra 200)
2005 Honda XR650L
2004 Honda CRF250X
1998 Kawasaki KDX220

Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894


 
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Old 02-04-2014, 01:51 AM   #51
NW1   NW1 is offline
 
Join Date: Jan 2014
Location: Byron Bay, Australia
Posts: 23
PS the pitbike frame has year 2000 so this zongshen 250cc engine is probably 2000.


 
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