Farm Equipment - D 15 II piston install?

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D 15 II piston install?

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Category: Allis Chalmers
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=17850
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Topic: D 15 II piston install?

Posted By: Dave H
Subject: D 15 II piston install?
Date Posted: 07 Sep 2010 at 10:46am

Darn, was gonna put the pistons in the block today. The book specifies that the wrist pins have clamp screws and gives instructions on how to position the off set in reference to the clamp screws.

This motor has free floating rods on the wrist pins with no clamp screws.

Can someone straighten me out on how to positions the off sets of the rod ends when instaling this type of piston assembly?

Replies:

Posted By: FredW
Date Posted: 07 Sep 2010 at 11:01am

wish I could help you now, I will get with you later if no on comes on. Fred

Posted By: mlpankey
Date Posted: 07 Sep 2010 at 11:06am

I could be wrong but I think you can tell if its wrong by the way the upper rod half wants to set on the rod journal . With a floating pin the offset is in the rod halves.

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Posted By: CTuckerNWIL
Date Posted: 07 Sep 2010 at 11:09am

Here you go Dave. Taken from the IT manual.

Connecting rods are offset; numbers 1 and 3 having long part of bearing towards
flywheel; numbers 2 and 4 having long part of bearing toward timing gears.
Tighten connecting rod nuts to 35-40 Ft.-Lbs. of torque and install pal nuts.
Tighten pal nuts finger tight plus % turn.
Charlie
The percent sign cam up instead of the fraction that I believe is 1/3.

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Posted By: Dave H
Date Posted: 07 Sep 2010 at 4:17pm

thanks Charlie

Guess I just cannot get enough books.

My parts book also shows the type of rod with the wrist pin bolt on them.