As you would expect on a 37 year old motorcycle the outside and inside of the engine oil pan were quite a mess.
Here are a couple of pictures from when the oil pan was removed from the engine.
I soaked the oil pan for a while in the Berryman’s parts cleaner. It did a pretty good job of getting the old gasket and grime off of the oil pan. With a little more cleaning it was ready to go for painting.
One additional thing I took care of before reinstalling the oil pan was to remove and clean the oil sump filter. This was probably about 50% clogged with just as much sludge as was seen in the oil pan.
With the oil sump filter reinstalled and a new gasket the oil pan was ready to be installed to the crankcase.
Now I can flip the engine back over and get started on the top half of the engine.
The next item to remove from the engine of the 1981 Suzuki GS650 is the oil pan so that a few internal bolts can be removed that will continue to hold the two halves of the engine crankcase together.
There were 17 bolts to be removed from the oil pan.
Once all of the bolts are removed, the manual suggests that tapping the oil pan with a mallet will release it from the crankcase as there are no alignment pins and only the gasket holding it in place.
Like the stator cover, the oil pan was not budging and there is no access to try and knock it off from the inside. A thin metal putty knife was able to be worked in to the gasket edge to release the oil pan from the crankcase.
A nice amount of sludge in the bottom of the oil pan.
And there were also quite a few more bits of the broken cam chain guide than I expected to find. At least they don’t appear to have circulated any further although some were in the oil pump screen.