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301 diesel will only crank 1/4 turn |
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
![]() ![]() ![]() ![]() ![]() Posted: 31 Dec 2023 at 4:09pm |
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Gleaner f combine broke hydro pump belt put on new belt used wrench to turn motor to put plate back on that runs unload drive, all back together now will only crank over 1/4 turn exactly that was starter issues but took starter off and with wrench only 1/4 forward or backwards. Before this ran fine moved around the yard let the oldest drive it around sounded good no smoke no nothing. Where should I start, I ordered owners manual but don’t even have it yet
Guessing need to take valve cover cover off see if all valves there? Just weird it ran fine shut it off and now this🤦♂️ Thanks for help Edited by CCF - 31 Dec 2023 at 7:02pm |
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 19734 |
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Remove every belt from the front and back of the engine and determine if it still is only 1/4 turn or not before you do anything else.
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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I did take main drive belt off and same so I’m going to take hydro pump belt back off tomorrow couldn’t see any thing but going to make sure
I’ll post update after it’s off |
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HudCo ![]() Orange Level ![]() ![]() Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3355 |
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timing , and compression
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8079 |
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Did you put a long bolt in somewhere that's sticking too far through?
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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I put it back with everything that came out….
So here is what im hoping for. Going along with what Dr Allis said I didn’t look too close at belt when I put new one on old one broke so I’m hoping it’s something with the hydro pump and it burnt the belt off but that will be in the morning. |
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HudCo ![]() Orange Level ![]() ![]() Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3355 |
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i dont know how my reply got on the wrong post
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 11452 |
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I got $.25 on the hydro having a problem. |
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GSTROM99 ![]() Silver Level ![]() ![]() Joined: 12 Dec 2020 Location: Greene, IA Points: 231 |
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[/QUOTE]
I got $.25 on the hydro having a problem. [/QUOTE] Me too. Probably why belt burnt off...
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WF owner ![]() Orange Level ![]() Joined: 12 May 2013 Location: Bombay NY Points: 4450 |
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When it stops turning, is it a sudden (clunk) stop or kind of soft / cushioned?
Is it possible there is liquid in one (or more) of the cylinders causing hydro lock (cushioned stop)?
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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Update
All belts off besides fan belt. Still hits and it’s a hard hit using breaker bar on front crank Took exhaust manifold off it’s dry Took hose off intake it dry Took valve cover off all valves appear to be in springs Nothing appears goofy on push rods Valves are moving at rear opposite end of fan and number 2 in quarter turn so don’t think cam. Any ideas things to check I missed? |
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WF owner ![]() Orange Level ![]() Joined: 12 May 2013 Location: Bombay NY Points: 4450 |
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A loose bolt on the flywheel or something floating around in the bellhousing?
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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I was on agco parts page looking at taking rear pto shaft off to check in there took starter off can’t see much small holes to look in Going to stick magnet in there also 🤞. I’m not much of engine person so any help greatly appreciated
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DrAllis ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Points: 19734 |
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You may have a rear PTO bearing bad.
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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That is where I’m heading next |
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im4racin ![]() Orange Level ![]() Joined: 12 Jun 2017 Location: Garrison ND Points: 862 |
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A hydro lock will pass when turned backwards 2 complete turns. That will push it into the intake so look for liquid then
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SteveM C/IL ![]() Orange Level Access ![]() Joined: 12 Sep 2009 Location: Shelbyville IL Points: 8079 |
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Reminds me of 40+yrs ago. 6-71 Detroit running fine when parked. Next morning dead miss on one cylinder. Head of piston containing rings broke free of rest and was setting at the top. Firing every stroke kept it together and running till shut down. Some things just happen.
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 11452 |
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I got $.25 on the hydro having a problem. [/QUOTE] Me too. Probably why belt burnt off... [/QUOTE] yep!
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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Can’t turn it more than quarter turn then hits |
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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Me too. Probably why belt burnt off... [/QUOTE] yep![/QUOTE] Belts off still hit looking into rear pto then motor |
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Tbone95 ![]() Orange Level Access ![]() ![]() Joined: 31 Aug 2012 Location: Michigan Points: 11452 |
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But….guess not!
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GSTROM99 ![]() Silver Level ![]() ![]() Joined: 12 Dec 2020 Location: Greene, IA Points: 231 |
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![]() Edited by GSTROM99 - 02 Jan 2024 at 8:08am |
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CCF ![]() Bronze Level ![]() Joined: 15 Sep 2019 Location: Danville ohio Points: 39 |
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Hoping since when shut off running fine it will not be much if any carnage just replace/reassemble what’s broke 🤞 |
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WF owner ![]() Orange Level ![]() Joined: 12 May 2013 Location: Bombay NY Points: 4450 |
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I am a firm believer in checking the easy things first.
I will go back to SteveM C/IL's question. Are you sure you didn't put a longer bolt in somewhere? It sure sounds like something that rotates is getting caught on something stationary. A long bolt sticking into the bellhousing would be my guess.
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