Flywheel Gasket

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Mutt Hunter
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Flywheel Gasket

Unread post by Mutt Hunter » June 26th, 2021, 12:06 pm

Gents,

I have about 250 miles on my newly installed powerpack, and I've got myself a healthy leak from what appears to be my flywheel gasket.

Like a good Chinook, you "don't get on it if its not leaking", but a class 2 leak needs to get fixed.

Question: can the gasket i've identified in the attached picture be replaced without removing the powerpack?

Image

dee
United States Army - 1986-2012
35th Sig Bde (Airborne)
82nd Airborne Division Artillery
B Co, Joint Communications Support Element (Airborne)
1st Infantry Division
US Special Ops Command
Commander, 3rd Joint Communications Squadron (Airborne)
US Central Command

Hambone
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Re: Flywheel Gasket

Unread post by Hambone » June 26th, 2021, 1:36 pm

You shouldn't have oil in that area, that's the clutch, maybe you lost a rear main seal?

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rickf
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Re: Flywheel Gasket

Unread post by rickf » June 26th, 2021, 2:01 pm

I agree, If you seal that gasket up, and put in the fording plug, you will drown the clutch in oil. It sounds like the rear main has gone out. Does this vehicle have a fording valve and is it in the open position? If it is closed for any length of time it will cause a leak at the rear main and also the front timing cover seal. It can also blow out the rear main at high RPM with the fording valve closed. You can pull that inspection cover off in the vehicle and look in there and see where the oil is coming from. If it is motor oil it should be coming from behind the flywheel, this is the rear main seal. If it is gear oil it is the front transmission seal which usually means a bad input bearing.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone

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Horst
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Re: Flywheel Gasket

Unread post by Horst » June 27th, 2021, 10:55 am

Time to pull the power pack again. Good thing that this time you will be much faster ;)
Horst

1972 USMC M151A2 w/ROPS (ex Barstow) and M416
1962 M201 and trailer
1966 GTO,1982 E350 Skoolie, 1987 SJ413, 1987 911
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