Re: 436 IH ENGINE PROBLEM

Posted by James2 on March 18, 2005 at 08:06:31 from (12.2.142.7):

In Reply to: 436 IH ENGINE PROBLEM posted by STONEY on March 18, 2005 at 02:24:12:

Elegant solution is roller followers. Adjusting the valve lash to solve lobe wear is a stretch. If it is too loose, you could increase roller impact with the lobe face, but again I believe it is unlikely. Too tight, would increase contact force at maximum lift, but you would burn a valve before you would effect lobe life. Two potential causes are excessive engine speed and poor oil. Is your HI set too high? What kind of oil do you use and how often do you change it? The local dealer cautions against using 15W40 oil in these engines. Claims, IH sent a bulletin which said excessive cam lobe could occur with this oil. In my opinion if this engine is that sensitive, then maybe I should have a different make engine. Consequently I use it anyway, and just change it more often. If any cam fails, I will get rid of all my IH stuff and buy something better. It is possible the OEM missed the heat treat on these lobes or overall had poor metallurgy. You could perform a hardness check, and also could do on the new cam. Just don't do it on the new cam lobe face! If hardness is not uniform, get another cam. Once a lobe starts to wear/fail from let's say surface pitting, the end is inevitable.

Follow Ups:

Post a Followup Name: E-Mail: Hide: Yes No Hiding your address protects you from spam generators but allows you to receive email response notifications. Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]