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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #21  
Old 09-13-2018
markusfmeyer markusfmeyer is offline
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Originally Posted by ttbuster View Post
Not sure now if they put in the right sensor they got it from Pete. With wire off does it run full speed. They put the sensor right next to the other two and pluged the coolant line. They also think it might be the thermostat but I do not know where that is.
There's two thermostats. In the picture Shane posted in post #4, as well as your picture in post #5, showing the two sensors, that is the housing for one of the thermostats.
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1986 PT40 6V92
VB 1570
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  #22  
Old 09-13-2018
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Well, with the limited information that I have, I would guess that they put a "typical" close-on-rise thermostat switch in there. You said it was running when you left and then quit running. That leads me to believe that once the engine got warm, the fan shut off. Just disconnect the wires and your engine should run VERY cool the rest of the trip. Try and keep your speed around 65... don't hammer it! The oil in that fan sump will be getting very hot if you run wide open.
This whole trip I have only been running about 62, did not want to push her to hard.
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86 Wanderlodge 40 PT
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  #23  
Old 09-13-2018
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Originally Posted by markusfmeyer View Post
There's two thermostats. In the picture Shane posted showing the two sensors, that is the housing for one of the thermostats.
There are 3 sensor there now the other hole is where they put the new one.
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  #24  
Old 09-13-2018
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You'll be pretty close to George Morris, a retired BB tech from the factory. He has his own shop now and can get your coach straightened out. A slow-running fan could be caused by dirty filters, a worn out fan motor (is it dripping oil from the shaft) or a worn-out hydraulic pump (is the coach hard to steer?) The fan and power steering are both powered by the same gear pump on the engine. If your steering is hard, then the pump could be failing, resulting in low pressure at the engine fan too.
Steering works great, the tech said he did see fluid dripping from that area.
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  #25  
Old 09-13-2018
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There's two thermostats. In the picture Shane posted in post #4, as well as your picture in post #5, showing the two sensors, that is the housing for one of the thermostats.
Is there more then 1 thermostat?
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  #26  
Old 09-13-2018
markusfmeyer markusfmeyer is offline
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My 86 with 6v has two, assume yours does as well. Have you checked the oil level in the hydraulic fluid tank?
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  #27  
Old 09-13-2018
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Mine is the 8V. And if I am going to run it full then I will need to get some more also with the wx ahead it might have to run full anyway.
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  #28  
Old 09-13-2018
markusfmeyer markusfmeyer is offline
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Look at the second diagram in post #85 in this thread that I put together when I did my radiator project, shows where the thermostat housings are:

https://www.wanderlodgeownersgroup.c...t=15573&page=9
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  #29  
Old 09-13-2018
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So I pull the wire but the fan is not running.
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  #30  
Old 09-13-2018
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Thank you Markus that helps a lot!!
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