Hello everyone, been working on my dozer engine, 440ic, had the block fixed up, bored .090 oversized one cylinder, sleeve in the other, new pistons installed, crankshaft installed, cam shaft installed, then checked for binding when turning the crankshaft, there is a slight binding every 180 degrees, binding on top and binding on the bottom, I can still turn it all the way around but can feel the binding at those two points, should I be concerned?
Don
Binding on the crankshaft turn
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- 430 crawler
- Posts: 99
- Joined: Fri May 29, 2020 9:47 am
- Location: Phenix City, Alabama
Re: Binding on the crankshaft turn
I have felt that as well before, seems to be at TDC, and CDC has been my guess. I wouldn't say for me it was binding, but at least greater resistance when turning over with a long punch in the front crank pulley roll pin hole. I also prelube everything with Lucas on assembly.
Lavoy
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com
Owner and moderator www.jdcrawlers.com
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- 430 crawler
- Posts: 99
- Joined: Fri May 29, 2020 9:47 am
- Location: Phenix City, Alabama
Re: Binding on the crankshaft turn
I pre lubed with CRT Moley and graphite and I also used the Lucas Assy lube, some have been saying the same thing about the resistant in the TDC, just wanted to be sure, after those points it’s freedom of movement..
- gregjo1948
- 350 crawler
- Posts: 1000
- Joined: Mon Aug 30, 2010 5:58 am
- Location: Newark Valley,NY,USA
Re: Binding on the crankshaft turn
I would guess that at the end of the crankshaft throw, top and bottom, there is a point where the piston stops. Being a new tight fit, you might notice a slight more resistance as it starts to move again. I'm talking about the slightest stopping of piston movement.
JD 350B diesel 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 , International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17, 1620 Ford
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