CK25 BLOWN HEADGASKET

[RADDAD50]

Blue, thanks for the reply. It says in the service manual to remove the cover on the bell housing and set the flywheel to TDC, if I don't have to do as the manual says it would be much easier. Just don't want to set them wrong and burn one.

 

[SSdoxie]

If you haven't put the head on yet you can set #1 piston to top dead center by truning crankshaft with wrench until piston stops rising & jsut before it starts descending. This is TDC but you won't know if it is on compression or exhaust stroke. Install the head and rocker arms, if both valve springs on #1 are loose it is at compression stroke and follow the instructions for setting both Intake & Exhaust on #1, Exhaust on #2, & Intake on #3. If one of the valve springs on number #1 are under pressure then set clearance on #2 intake & #3 exhaust, put a mark on the enging front pulley and rotate crankshaft 1 full revolution and set the other valve clearances.

 

[Mr_D]

I just had to replace my head gasket on my ck25 at 935 hrs. It failed at the same location as Blue showed in his pictures. The fix was pretty easy. Re-torqued the bolts (new bolts) after letting it run for 30 minutes and adjusted the valves. Most of the valves were within spec with only 3 needing to be tightened from .005 to .004.

Hopefully this one lasts for a while.

Thanks to those who have shared their experiences. It was a great resource.

 

[Mr_D]

Also, I have the service manual in pdf format if anyone needs it. One of the other members shared it with me and indicated that I could share it with others.s