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Farmall & IHC Tractors Discussion Forum
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Valve Timing 674 IH D239

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Jarrod T. Britt

03-09-2004 19:40:51




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Does anybody have an IH service manual on the D239 engine?The valve timing is off somehow.I lined up double dot on idler gear with double dot on the cam gear,single dot with the #4 dot on the injection pump gear, and single dot with knotch and dowel pin on crankshaft gear.Valves are hitting the pistons.Please help if you know any info on this subject.I WILL DANCE AT YOUR NEXT WEDDING!Thanks




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Bernard le mécano

03-11-2004 17:41:29




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 Re: Valve Timing 674 IH D239 in reply to Jarrod T. Britt, 03-09-2004 19:40:51  
Hi Jarrod, it have a mark on crankshaft gear. Bernard le Mécano Québec Canada



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clanger

03-10-2004 05:11:23




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 Re: Valve Timing 674 IH D239 in reply to Jarrod T. Britt, 03-09-2004 19:40:51  
According to the I&T manual (IH-203) it says:
"To check the valve timing, remove the rocker arm cover and crank the engine to position number one piston at T.D.C of compression stroke. Adjust number one intake valve tappet gap to 0.014 inch.
Place a 0.004 inch feeler gage between valve lever and valve stem of number one intake. Slowly rotate crankshaft in normal direction until valve lever becomes tight on feeler gage. At this point, number one intake valve will start to open and timing pointer should be within the range of 23 to 29 degrees before top dead centre.
NOTE: One tooth 'out of time' equals approx. 11 degrees.
Readjust number one intake valve tappet gap as outlined in para 54"

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