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17A 4242 rear crank seal problems

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4 years 1 month ago #220580 by edb
Hi Jason,
sorry to hear of your continuing dilemma.
I guess you have correctly, tightly and fully packed the rear main bearing cap to cylinder block sealing packings, one each side of the bearing cap--2B2414 packing--this from my 17A 11879 P/Book.

Also at the rear camshaft bearing bore in the Cyl. block it is sealed with a freeze plug--0S0519--this could be missing or leaking due to being fitted cocked in its bore or the bore damaged--gouged from rough removal of a plug previously.

From memory the rear camshaft freeze plug bore is not fully covered and sealed by the flywheel housing or its gasket so can leak into the clutch area.
Hope this helps.

Cheers,
Eddie B.

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4 years 1 month ago #220622 by Jason
I'm kinda leaning that way also. not sure when I'll have time to bring it in the shop again but when I do first thing I want to do is remove the rear bell housing and see what I got in there. Like I said before engine was apart for A couple of years so we might of missed some thing. seems to be a lot of oil for a bad seal. I have heard of guys going a long time on a bad seal and just draining oil once a day.
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4 years 1 month ago #220623 by Fat Dan

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955E 12A08263; 955C 12A04040; 955C 12A03563.
No.12 Diesel Motor Grader 8T14777.
No.12 Diesel Motor Grader 9K9320
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2 years 2 weeks ago #240496 by Jason
Well I found my problem and thought I would share it with you guys. I pulled the engine out again and started measuring every thing and my crank is turned down .025. I knew that. then we started looking at the main bearings. All my main bearings should be .025 under but for some reason my rear main and seal was std. I guess I had not double checked all my bearings part numbers when I installed them. New .025 under seal and bearing should be here tomorrow. I'll try to give an update next week some time.
The following user(s) said Thank You: Bentzdo, Busso20

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