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AC 190 rear main seal.
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acplowboy45 View Drop Down
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Joined: 09 May 2013
Location: connersville IN
Points: 264 		Post Options Post Options   Thanks (0) Thanks(0)   Quote acplowboy45 Quote  Post ReplyReply Direct Link To This Post Topic: AC 190 rear main seal.
    Posted: 04 Mar 2017 at 1:42pm
I have a 190 and I have replaced the rear main seal twice and now this is going on my 3rd time...Anyone might a have a good diagram on how this seal goes in. I'm too the point I darn near split my tractor in my sleep. What am I doing wrong.
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tbran View Drop Down
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Joined: 14 Sep 2009
Location: Paris Tn
Points: 3531 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tbran Quote  Post ReplyReply Direct Link To This Post Posted: 04 Mar 2017 at 1:46pm
how many bolts in the flywheel? does it have a dowel pin ?  Do you have the lip oriented correctly, did you replace the wear sleeve and is it correctly installed.  Are you sure it is the seal  that is leaking?  also what is the fore aft movement of the crank as to end play... need more information...

Edited by tbran - 04 Mar 2017 at 1:46pm
When told "it's not the money,it's the principle", remember, it's always the money..
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DougG View Drop Down
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Joined: 20 Sep 2009
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Points: 8358 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougG Quote  Post ReplyReply Direct Link To This Post Posted: 04 Mar 2017 at 2:25pm
I know the problem !   First time I done a rear main seal on an XT that was leaking , put it together still leaked; split it again and inbetween  the Adapter plate and engine there are 2 Orings , one big and the other smaller; these were hard and dried up so bad theres no way they could've held oil ,, just my experience   
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ACjack View Drop Down
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Joined: 13 Sep 2014
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Points: 276 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACjack Quote  Post ReplyReply Direct Link To This Post Posted: 04 Mar 2017 at 6:36pm
Originally posted by DougG DougG wrote:

I know the problem !   First time I done a rear main seal on an XT that was leaking , put it together still leaked; split it again and inbetween  the Adapter plate and engine there are 2 Orings , one big and the other smaller; these were hard and dried up so bad theres no way they could've held oil ,, just my experience   

At the Harvey engine plant we  used "square cut" O-rings on the rear plate/flywheel housings and to hold them in place during assembly a little spray of Scotch 77 was applied to the groves that were cut into the rear plates/flywheel housings.
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MACK View Drop Down
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Points: 7664 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 04 Mar 2017 at 9:47pm
Open part of seal goes to motor. Put a small amount of blue locate in seal ware ring before installing on crank.                MACK
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