Crank Dampner Question
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Senior User
Joined: Feb 2005
Posts: 294
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From: Tillamook, Or.
Crank Dampner Question
Thought I would ask a question about the timming mark on my dampner. I have it off the truck, and have read here a couple times that others had found that the timing mark wasn't where they expected it to be with the gears all lined up. It's going to be a while before I am ready to put the front end back together so I thought I would ask here to find out what others have seen.
So, I measured the angle between the slot for the woodruf key, timming it to the crank, and the groove that indicates TDC. I get 110°.
Anybody else ever measured this or know what the factory spec would be?
So, I measured the angle between the slot for the woodruf key, timming it to the crank, and the groove that indicates TDC. I get 110°.
Anybody else ever measured this or know what the factory spec would be?
Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
So do you have the front cover plate off the engine..... the article below may help you.
"Talk about Timing!!"
"Talk about Timing!!"
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Senior User
Joined: Feb 2005
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From: Tillamook, Or.
Yup
The front cover is off the motor right now.
Thanks for the article link, I'm pretty comfortable with the setup but am always open to new information. I was more interested in whether anybody had ever actually measured the angle on the dampner.
When I get around to reassembling the front of the motor I can check it easy enough. I was just curious if anybody had a spec or had ever measured their dampner for comparison.
Dawdddlings of the dimented mind.
Thanks for the article link, I'm pretty comfortable with the setup but am always open to new information. I was more interested in whether anybody had ever actually measured the angle on the dampner.
When I get around to reassembling the front of the motor I can check it easy enough. I was just curious if anybody had a spec or had ever measured their dampner for comparison.
Dawdddlings of the dimented mind.
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Senior User
Joined: Feb 2005
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From: Tillamook, Or.
That was my impression
That's why I asked the question. If nobody else has measured it maybe I'll be able to actually contribute something. When I put the front back together I'll have the gears all lined up and be able to measure and record any variation.
Elder User
Joined: Aug 2007
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thats would be excellent because my balancer has crawled and i do not have a known good one to compare for the correct orientation of the marks versus the keyway ,if i had the information i could compensate for it and use my timing meter to set the pump
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Senior User
Joined: Feb 2005
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From: Tillamook, Or.
My engine had been so poorly maintained by the PO that I have bigger questions than timing. When I pulled the injectors one of them was corroded so bad that I'm sure that it had been a long time since it had worked at all.
I'm going to put it back together the best that I can and hope for the best. My gamble is that the engine is stronger than the PO was stupid. This truck sat outside in Western Oregon rain for long periods of time and then he drove it like a gasser, quick start and go, then let it set for a while again. If it starts and runs good, I win, if not............
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Post Fiend
Joined: Nov 2004
Posts: 5,638
Likes: 1
From: Manitoba
I would say if all the right marks that we use to align the gears are correct and the Harmonic balancer is showing as moved........ I would order a new one.........I have seen too many car HBs rattling around on the crank all worn out.
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Senior User
Joined: Feb 2005
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From: Tillamook, Or.
Hmmmmm
Oh well, what's another $140, the way things are going it isn't much more than filling both tanks with fuel.