WD45 Diesel Cylinder Head Torque
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=141049
Printed Date: 31 Dec 2025 at 8:58pm
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Topic: WD45 Diesel Cylinder Head Torque
Posted By: sparkyb
Subject: WD45 Diesel Cylinder Head Torque
Date Posted: 02 Aug 2017 at 6:46pm
I have a WD 45 Diesel and was wondering if I replace the head gasket do I need to re-torque when the engine is hot?
Thanks
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Replies:
Posted By: OrangeFever
Date Posted: 02 Aug 2017 at 6:52pm
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I would recommend retorque of gasket but why are you taking it apart??? Odds are you will find issues with the sleeves having sunk.
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Posted By: DougS
Date Posted: 03 Aug 2017 at 6:24am
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The bolts will already be tighter than spec when the engine is hot. It's a matter of simple expansion. If the need to be retorqued at all I would retorque the bolts after the engine has been hot, but after it cools down.
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Posted By: sparkyb
Date Posted: 03 Aug 2017 at 7:03am
I purchased the tractor about 6 months ago and I was took the motor was rebuilt. Did not notice any oil leak from head at that time (engine never really warmed up). Now that I am using it I have found that oil is leaking from the injector side of the head once the engine gets hot. Checked and no Coolant in crank case. Motor does sound good.
Thanks
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Posted By: DrAllis
Date Posted: 03 Aug 2017 at 7:22am
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If you choose to re-torque, do it with a COLD engine.
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Posted By: Don(MO)
Date Posted: 03 Aug 2017 at 8:37am
If you have not removed the head off the engine I'd check if the head bolts will even hold being re-torqued first, I'll bet the bolts are bad and or the threads are too.
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3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep.
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Posted By: sparkyb
Date Posted: 03 Aug 2017 at 11:52am
Thanks guys, I will check torque with engine cold and go from there.
Thanks again,
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Posted By: groundhog55
Date Posted: 03 Aug 2017 at 3:45pm
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The threads on those head bolts will stretch. And also your sleeves could have sunk. Both have happened to me.
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Posted By: sparkyb
Date Posted: 03 Aug 2017 at 4:17pm
Thanks for the information. what did you do to fix the problem?
Thanks
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Posted By: MACK
Date Posted: 04 Aug 2017 at 7:24am
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I sell steel fire rings that will keep sleeves from sinking. MACK
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Posted By: Brian Jasper co. Ia
Date Posted: 04 Aug 2017 at 12:42pm
When I did my 262 I found probably half of the head bolts were pitted and not just a little. I put it back together with ARP studs and nuts. IIRC The studs cost about 2/3 of what new bolts from AGCO were.
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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford
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