Removing the left wing also gives full access to the Kodiak heater, as that will have to come out in order to change the core.
Below: a lot of bolts to undo, but not a difficult job.
The working area, with water pump cover and pump removed. Nice access.
Water pump, looking all-in-all in pretty good shape. It didn't leak before, and the bearing has no play and turns smoothly, and so will be given a good clean and re-installed as is.
The interior face of the pump compartment. Appears to have come through its many years in relatively good condition.
The patient. : )