I have an MC8 manufactured in Dec of 77. It is a 78 model. It has an 8V71 and standard transmission. When I bought the coach I took it to Stewart and Stevenson for a complete service and asked them to tell me anything that they thought should be done ie air leaks fuel system etc. One thing they found was that the radiators were in need of attention. I took them out and took them to Commercial Radiator where I was told that they needed to be recored. I had them recored and replaced all the rubber seals around them. I also replaced the air divirters at the squirrel cage fans and the rubber seal where the belt passes through from the engine to the radiator comparment. When I replaced the radiators I completely drained the system and replaced the antifreeze with the expensive Detroit Diesel premixed stuff so I didn't have to worry about it later. I have only driven the coach 20 or 30 miles at a time and every time I take it out the temp guage goes up to about 210 or a little more. This was a cause for major concern because I did not want to have to replace the motor from overheating. Finally I bought an infrared non contact thermometer. I operated the coach til the temp guage came up to the normal 210 or so and then I parked and went to the engine compartment and checked multiple locations on the motor. Intake at each cylinder and the exhaust manifold at each cylinder the side of the block the radiators the hoses to and from the engine. Pretty much had a ball with the new toy and the bus. Nowhere in the engine compartment could I find a temp over 190 degrees. I am not a diesel mechanic so I am not sure what the temps should be but from this experience I am guessing that either my temp guage is bad or the sending unit is bad. There is a mechanical guage in the engine compartment but it is not connected to anything the bulb end of the guage is just hanging there and I could not locate the place to hook it up. As I am starting to get things ready to work on and upgrade the dash I thought if the guage was bad this would be a good time to replace it. Any thoughts would be greatly appreciated.
Melbo
Melbo, I can send you a photo if you'll email me. Click on my name for addy. The photo will not load here, I get an error message that the pics too large-
Chuck,
Go to the Board Help board and their is a topic about resizing photo's.
Has a link to a free resizing tool
HTH
Cliff