jens94850 Posted February 13, 2005 Report Share Posted February 13, 2005 Seems obvious, but looking for an easier way. Replaced a friend's t-belt on an 850 today. Someone has fashioned their own alignment marks. I went for the correct ones and no go.... Pulled the belt and used their's and it runs. At their alignment marks, the exhaust cam and crank are lined up but the intake cam is off from original. Looks like someone replaced a seal and carelessly put the cam gear back on in the wrong position. It seems obvious, but before I risk internal collision, wanted to ask a question.Is there a simple trick for aligning the cam without opening it up and without using the marks on the gear? Before I go rotating the cam gear to where I 'think' it should be, I want to make sure I have it in the right place, but I don't want to spend the time to open it up and actually check which valves are open/closed.Thanks. Link to comment Share on other sites More sharing options...
Guest Guest Posted February 13, 2005 Report Share Posted February 13, 2005 There is a special vernier tool required to line up the cam pulleys once the timing has been lost. Expensive to buy for one use, I expect only a Dealer or an engine rebuilder would have one. Link to comment Share on other sites More sharing options...
laird Posted February 13, 2005 Report Share Posted February 13, 2005 If you didn't rotate anything during your belt swap, the cam is right where you left it. Pull the gear and see if putting it back on with the marks aligned properly also has the bolt holes lined up. There may be an alignment mark, notch, dimple, on the cam itself that may give you a clue as well. Before you started, I hope you had it at TDC...if so you could do a crude leak down check of cyl. #1 that would give you an idea if you are in the right place. Otherwise you need to pull the valve cover and have a look. Link to comment Share on other sites More sharing options...
Bay13 Posted February 13, 2005 Report Share Posted February 13, 2005 THere is a cam lock tool that goes on the back of the cams, you have to take off the distributor and the CMP sensor, then you put the cam locking device on, and it mechanically aligns the cams to where they belong, then you can position the gear on the front of the cam. Link to comment Share on other sites More sharing options...
Guest Guest_whilst_* Posted February 13, 2005 Report Share Posted February 13, 2005 THere is a cam lock tool that goes on the back of the cams, you have to take off the destributor and the CMP sensor, then you put the cam locking device on, and it mechanically aligns the cams to where they belong, then you can position the gear on the front of the cam.←"What Rich said"."Master set of tools= $500. does cylinder head service complete.HTH. Link to comment Share on other sites More sharing options...
jens94850 Posted February 13, 2005 Author Report Share Posted February 13, 2005 Thanks for the help. That's what I was afraid of. I'll see if the dealer will let me borrow one..if not I'll pull the gear and see if the mark and bolt holes line up at the same time...that was the plan anyway...just hoping for a simple way without guesswork.It runs fine right now, but I am thinking it may be advanced just a bit...seems to have more power than mine..maybe I should just leave it like that Rich, any idea if the tool is available OTC anywhere for a reasonable price...or only through Volvo? Link to comment Share on other sites More sharing options...
Bay13 Posted February 13, 2005 Report Share Posted February 13, 2005 Through the dealer is about the only way I know of getting the Volvo specific tools and they are not cheap. If you have a haynes manual they tell how to make some of the tools you need. Link to comment Share on other sites More sharing options...
jens94850 Posted February 16, 2005 Author Report Share Posted February 16, 2005 If you have a haynes manual they tell how to make some of the tools you need.←GREAT tip. I should have looked at the Haynes before asking. If you follow the head assembly instructions, the manual tells you how to line the cams up without using any tool (since they'll already be locked in place in an assembled head.)Thanks. Link to comment Share on other sites More sharing options...
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