Help w/ TDC - changing my timing belt right now
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From: Norwalk, CT
Help w/ TDC - changing my timing belt right now
I know everyone hates these "help me now, please!!" threads, but I'm stumped on this one.
So the Helms manual specifically says to set the oil pump gear to TDC by aligning the "V" on the housing, and the "^" on the gear (page 6-16, step 2). Then when you're done putting the belt on, it says to check TDC via the flywheel (page 6-17, step 15).
My problem is that these two methods of setting/checking TDC don't agree on my engine . . . . When I set it via the oil pump housing, the flywheel is off, and vice versa.
How is this possible? Which one should I believe?
Thanks in advance . . . .
So the Helms manual specifically says to set the oil pump gear to TDC by aligning the "V" on the housing, and the "^" on the gear (page 6-16, step 2). Then when you're done putting the belt on, it says to check TDC via the flywheel (page 6-17, step 15).
My problem is that these two methods of setting/checking TDC don't agree on my engine . . . . When I set it via the oil pump housing, the flywheel is off, and vice versa.
How is this possible? Which one should I believe?
Thanks in advance . . . .
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From: md, us
Re: Help w/ TDC - changing my timing belt right now (Daemione)
The oil pump gear is the gear closet to the rear of the motor that is ran buy the balancer belt in which they are speaking of. Line the crank/ flywheel tdc, with the cams gears also and put the t-belt on. Then set the tensioner . Set the front balancer shaft then the rear oildrive gear or what ever you wanna call it and then bottom pulley is already lined up hence the crank is on time and your done!
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Re: Help w/ TDC - changing my timing belt right now (md23vtec)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by md23vtec »</TD></TR><TR><TD CLASS="quote">The oil pump gear is the gear closet to the rear of the motor that is ran buy the balancer belt in which they are speaking of. Line the crank/ flywheel tdc, with the cams gears also and put the t-belt on. Then set the tensioner . Set the front balancer shaft then the rear oildrive gear or what ever you wanna call it and then bottom pulley is already lined up hence the crank is on time and your done!</TD></TR></TABLE>
Umm . . . the balancer belt doesn't run anything except the balancer shafts . . . . and that's not really what I was asking anyways.
Regardless, I've resolved my original confusion - turns out I was looking at the flywheel timing mark from the wrong angle . . . .
But . . . . another question: Is there anyway to align the rear balance shaft other than using that stupid "maintenance hole"? For the life of me, I can't get the bolt out that plugs the maintenance hole - there's like zero room to work in there.
There are 2 marks on the rear balance shaft gear, though - a dimple & a V, both are 180 degrees opposite from eachother. Could those be used to align the shaft?
Umm . . . the balancer belt doesn't run anything except the balancer shafts . . . . and that's not really what I was asking anyways.
Regardless, I've resolved my original confusion - turns out I was looking at the flywheel timing mark from the wrong angle . . . .
But . . . . another question: Is there anyway to align the rear balance shaft other than using that stupid "maintenance hole"? For the life of me, I can't get the bolt out that plugs the maintenance hole - there's like zero room to work in there.
There are 2 marks on the rear balance shaft gear, though - a dimple & a V, both are 180 degrees opposite from eachother. Could those be used to align the shaft?
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Re: Help w/ TDC - changing my timing belt right now (Daemione)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Daemione »</TD></TR><TR><TD CLASS="quote">
There are 2 marks on the rear balance shaft gear, though - a dimple & a V, both are 180 degrees opposite from eachother. Could those be used to align the shaft?</TD></TR></TABLE>
yes. the 2 marks are 2 different reference points. the "V" is used to line up with a mark on the inner side near the gear, the line on the gear is 180 degrees on the other side and lines up with a mark on the oil pump. the Helms does not do a good job showing this but you'll find one tooth only that give a pretty close match, the tooth in front and in back of it are obviously off when you try them
There are 2 marks on the rear balance shaft gear, though - a dimple & a V, both are 180 degrees opposite from eachother. Could those be used to align the shaft?</TD></TR></TABLE>
yes. the 2 marks are 2 different reference points. the "V" is used to line up with a mark on the inner side near the gear, the line on the gear is 180 degrees on the other side and lines up with a mark on the oil pump. the Helms does not do a good job showing this but you'll find one tooth only that give a pretty close match, the tooth in front and in back of it are obviously off when you try them
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