425 coolant leak - help

[labsrus]

Our 425 with 521 hours on it started leaking coolant and I am wondering how hard it is to replace the main gasket? I replaced the 2 smaller ones thinking it was them but it is the big main gasket. Can anyone give me an idea how hard it is to replace or if I should also check anything else if I take it apart?
Thans for any help.

 

[beenthere]

Here is a schematic and removal hints of a head. Which gasket did you replace?

 

[beenthere]

And the Cylinder head instal procedure.

 

[labsrus]

beenthere - I replaced the 2 smaller ones on the front ( not the cylinder ones). The one leaking is the 3rd gasket ( biggest) on the front. It is right behind the 2 I took off. The part has the oil dipstick on it.

 

[beenthere]

Well, I'll take another shot at it.
This one includes the crankcase cover. Are you seeing the water leak from under this cover? I erred thinking you were talking head gasket.
I assume you have tried snugging each of these bolts up a bit, in hopes one or more might be loose?

This show what you need? Sequence of bolts is apparently important.

 

[labsrus]

Yes, it is the crankcase cover gasket that is leaking. I did try to tighten the bolts up but it just made the leak drip more. It is leaking right above the #6 bolt at the gasket.
Is there anything I should know about it leaking at this gasket?
I would think it is not too hard to change the gasket? Is there anything I should look for if I do change the gasket?
Thanks for the picture.
Doug