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mitchntx
Follower of Rev. Doug
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Need a bit of guidance ...
1982 CB750F super sport has developed a nasty oil leak from the intake cam chain tensioner adjuster. It appears from the parts schematic, to be a simple bolt/locking nut with an O-ring.
But having never been inside a DOHC Honda in-line 4, I don't know if it's a mechanical jenga puzzle in there or simply a bolt pushing against a tensioner slide.
My fear is backing this bolt out to get at the O-ring and hearing a part or two rattle it's way into the bottom end.
Here are a couple images from parts fiche ...
#20 is the O-ring I seek to replace. It either fits onto the tensioner below the locking nut or into a machined lip of the head.
And exploded view of the tensioner itself ... again, #20 is the O-ring.
My concern is the plug #19. If I back the tensioner all the way out to replace the O-ring, what keeps the plug in place? And then, without tension, does the mechanism fold like a cheap suit and the spring is released and falls along with the dampening sleeve #s 12 & 13.
#21 appears to be a fastener that holds the fixture in place, but I see two places where the whole fixture can articulate. The articulating is what scares me.
Oh sure, I could pop the valve cover and get a better look. But the bike is a survivor
It appears to have never had any of the covers off. Who knows what the domino effect might be once a I breech a 36 year old factory sealed motor. Paranoia is high because parts are not easy to come by.
It took months to cobble together enough usable parts to put a starter solenoid together without having to butcher the factory harness.
1982 CB750F super sport has developed a nasty oil leak from the intake cam chain tensioner adjuster. It appears from the parts schematic, to be a simple bolt/locking nut with an O-ring.
But having never been inside a DOHC Honda in-line 4, I don't know if it's a mechanical jenga puzzle in there or simply a bolt pushing against a tensioner slide.
My fear is backing this bolt out to get at the O-ring and hearing a part or two rattle it's way into the bottom end.
Here are a couple images from parts fiche ...
#20 is the O-ring I seek to replace. It either fits onto the tensioner below the locking nut or into a machined lip of the head.
And exploded view of the tensioner itself ... again, #20 is the O-ring.
My concern is the plug #19. If I back the tensioner all the way out to replace the O-ring, what keeps the plug in place? And then, without tension, does the mechanism fold like a cheap suit and the spring is released and falls along with the dampening sleeve #s 12 & 13.
#21 appears to be a fastener that holds the fixture in place, but I see two places where the whole fixture can articulate. The articulating is what scares me.
Oh sure, I could pop the valve cover and get a better look. But the bike is a survivor
It appears to have never had any of the covers off. Who knows what the domino effect might be once a I breech a 36 year old factory sealed motor. Paranoia is high because parts are not easy to come by.
It took months to cobble together enough usable parts to put a starter solenoid together without having to butcher the factory harness.
