Question about 1985 GMC C1500

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HOW TO SET TIMING MARK BY HAND

HOW DO YOU SET THE TIMING MARK ON TDC BY HAND?

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Good day
What size Eng? Gas or Diesel? Please let me know then I can help you.

Cheers

Posted on Sep 15, 2008

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My 2003 freelander crankshaft mark is set as well the cams but piston is not on top dead center on safe mark on sude mark piston is on top but cant turn it gets stuck


I've worked on freelanders loads of times presuming yours is the petrol model when you set the timing up on these when working on them. all pistons are at the halfway mark in the bores this is so no pistons strike the valves when taking the cylinder head off. So the actual mark if you want it set at tdc you need to take off the crankshaft pulley wheel it won't do any harm just four little bolts if I recall when this crankshaft wheel is out of the way you still have the gear there what the cambelt sits round. It is on that gear where the true mark is to set up the timing with no1 piston at tdc. Infact the pulley wheel needs to come off when changing a cambelt make sure the timing marks are set up properly check twice if nessessary then turn engine over one revolution by hand slowly to make sure no internal parts are hitting and timing marks come back together

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Take off the intake side, then set the #1 cylinder to top dead center. When you install the cams, set them close to where the marks should be. Alignment is critical when you put the belt on. After the belt is on turn the engine two revolutions by hand and recheck/reset your marks. Every time you reset it, turn the engine again and recheck marks.

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Yes, there's timing marks on all engines. You'll find a mark on the harmonic balancer that the pullys bolt to on crankshaft. Other mark is on a tab bolted to the engine to one side of the balancer. There's a TDC mark stamped into this tab for Top Dead Center of the #1 cylinder. Place these to marks in alignment and your there.

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Ignition 6_8 degrees valve timing balancer TDC cam gears have pointer marks, inner belt cover should pointers if not set crank top dead centre on 1 TDC balancer to pointer then visualy set cams on the rock . Turn backwards forwads by hand then check ,ps pull out sparkplugs to turn dont use ignition until u sure

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set mark on crankshaft to TDC mark on timing cover. set mark on cam pulley to align with mark on head .if more than one mark on pulley rotate by hand till exhaust and inlet just rocking then align closest marks .

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Since I'm not sure how much info you have, here's what I have in my Chilton manual. The firing order is 1-5-3-6-2-4. Your timing marks should be on the damper and your timing is the 3rd line AFTER the "O" mark. Your point are set at .020 and the plugs at .035. If you are able to set dwell it should be 35-38.

To set the inital timing remove the valve cover first. As you turn the engine over by hand watch the operation of the valves. As the timing marks come up on the O the intake valve should be closing. At the O you are on Top Dead Center (TDC). If you go past TDC the exhaust valve should start to open. If this is what you see, then you can line up your distributor with the #1 spark plug and wire your cap from there. It this is NOT what you see then turn the engine over 1 complete turn back to TDC and you should see it happen this time. The crank turns twice to every 1 turn of the camshaft.Now insert your distributor and go from here. Snug the distributor and fire up the engine, use a timing light and set to the third mark ahead, that would be the direction the pulley is turning. Hope this helps.

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Hi, to set the timing you should turn the No.1 piston to TDC, then turn the cam to where both valves on No.1 are close. The timing mark on the sproket should now be in line with the mark on the cilinder head. With No. 1 still on TDC fit the chain.
After fitting turn the engin a few times by hand to make sure there's not a valve pushing against a piston.

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To set the timing you should turn the No.1 piston to TDC, then turn the cam to where both valves on No.1 are close. The timing mark on the sproket should now be in line with the mark on the cilinder head. With No. 1 still on TDC fit the chain.
After fitting turn the engin a few times by hand to make sure there's not a valve pushing against a piston.

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