Question about 1999 Volvo S70
You cannot and I repeat cannot do this job without the line up tool for the camshafts. The reassembly of this engine is set for about 30 degrees off of tdc. There are no marks for the cams to line them up. You need the jig that holds the cams in place. I have 35 yrs working on Volvos as a professional tech. YOU CANNOT do this without the tool.
Posted on Apr 16, 2015
gregorykilke: your engine has several references if you are describing the same vehicle. The 1996 KIA Sportage has a SOHC engine and was the last year to use one before they went exclusively to twin cams.
The timing marks are as follows: On the crank, position the crank to where the woodruff key is in the 12:00 position. There is a metal plate with a notch behind the gear. If you look closely at the engine behind the plate, thought the notch, there should be a small "ARROW" which should fall within the notch. If lined up properly, the #1 piston will be at TDC.
On the top end of the engine, your cam gear is numbered 1-2-and 3. Position the cam to where the #2 on the gear is at 12:00. On the back side of that gear, should be a mark which should be running in line with the # 2 and it is the "Match mark which you line up with the small arrow or "V" on the cover.
A word of caution! This is an interference fit engine which means it BENDS VALVES IF YOU DON'T HAVE THE TIMING CORRECT AND YOU HAVE BEEN SPINNING THE ENGINE OVER!
IF>>>you are lucky, you might not have had the timing too far off and the valves may be fine, but exercise EXTREME caution when setting up the valve timing.
One way to avoid bending valves, is to make sure none of the pistons are at or close to TDC. This way, you can roll the cam in position and then watch which direction is going to bring the #1 piston up and whether it is rotating the engine clockwise or counter clockwise to bring the piston to that position , it won't harm anything. IF you feel any resistance at all STOP!!!!!! because the timing is off and you will bend valves.
Make sure the tensioner pulley bearing turns smoothly and makes no noise. DO NOT WASH IT WITH SOLVENT OR SPRAY IT OFF WITH CARB SPRAY! The solvent will get inside the sealed bearing area and contaminate the lubricant causing a premature bearing failure and a potential disaster for your engine!
Should you need further assistance on this subject, just ask and I'll do what I can to help. The belt tension is also CRITICAL!
Take care guy, Give the folks at FIXYA some input if I am doing you any good or if I have helped anyone else, write in and let them know. They want feed back. GOOD LUCK!
Posted on Apr 09, 2009
You must find the cam lock bar and crank lock pin to do this job properly, otherwise you can bend some valves and that becomes expensive..the front crank damper has a mark to line up with a mark on the timing cover for #1 TDC, but the cam lock bar is what aligns the cams into position. The crank lock pin is helpful but not 100% necessary...
Posted on Sep 16, 2009
If you plan on doing more than light tuneup work, I highly recommend purchasing a manual for your car.
We have for each of three vehicles a Haynes manual and it contains all the details on maintenance possible for the shade-tree mechanic. All are based on a complete rebuild.
Even if not doing a particular job, one can somewhat estimate what it will cost to have done.
Posted on May 17, 2010
SOURCE: Corolla 1.6 VVTI motor the
With engine Crankshaft on TDC and cam timing set correctly this is the position where No. 1 cylinder is firing at the start of the power stroke. At this point No. 4 cylinder is also at TDC but is just at the end of the exhaust stroke and starting the intake stroke so the exhaust valve will be almost finished closing and the inlet valve will just be starting to open. This is referred to as the inlet and exhaust valves rocking.
Posted on Jan 05, 2011
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