Getting the rear coolant drainage plug out of the 24V engine
I thought some of you might be interested, removing the "hidden" rear coolant drainage plug from the 24V engine block is possible.
This is the plug located right next to the oil filter. I managed to locate it with a mirror, I was then able to reach it reasonably easily with my finger tips. A regular 22mm socket wouldn't fit, it's blocked by components around the plug. So... I cut down a regular 22mm socket so it was exactly the same depth as the coolant plug (using the front plug as a guide). I then had a friendly mechanic weld a cut down 1/4" socket into the original 22mm socket to convert it from 1/2" to 1/4". The new socket fits perfectly over the rear plug and with a 1/4" extension there is enough length to attach a ratchet. I broke the first 1/4 ratchet I tried, but with a 1/4" to 3/8" adapter it worked and the plug came out!
Not surprisingly no coolant followed, it was completely silted up. Even a small screwdriver couldn't get it flowing. In the end a bottle brush down the hole dislodged enough for it to drain completely.
Replacing the plug was easier than expected.
Not a simple job by any means, but it is possible!