wd45 offset piston pins

jrm1 · Jan 31, 2012

I am installing new ai pistons on my old 45 rods. I have the allis chalmers wd - wd45 service manual. I have read section on offset 1&3 and 2&4. The books states rod against boss and pin flush with skirt. My old stock piston are set up rod against boss and pin flush with outside of boss bore. The old pistons were offset correct and not rubbing liner. Can someone give me their thoughts on this set up.

Anonymous-0 · Jan 31, 2012

With rod against boss and pin flush with skirt, lock bolt. When installed rod end will be away slightly from boss moving pin closer to center.

bjb in TX from Ne · Jan 31, 2012

When I did my WC (same instructions) I followed the manual. The important thing is when you get the pin in the right location and move the rod back and forth between the bosses the pin doesn't protrude. The rod is actually held centered by the crank. The pin should be approximately centered too if following the directions.

mikeintn · Feb 1, 2012

I just did my WC and I put the the piston and rod in without the rings and then hold the rod on the crank tight, then check the gap you have between the rod and piston boss, then take it back out, set it back to the same gap, then center the pin in the piston, just make sure you keep the pistons marked front and numbered so they go back right. Mike

wd45 offset piston pins

jrm1

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Anonymous-0

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bjb in TX from Ne

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mikeintn

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