Water pressure guage on closed cooling 525
07-05-2010, 08:11 AM
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Water pressure guage on closed cooling 525
Can anyone tell me were to hookup a water pressure guage on a Merc 525 with a closed cooling system to monitor the raw water pressure that comes from the sea water pick up? I have a sea strainer installled and think it would be helpfull for knowing when it is cloged up.
07-06-2010, 09:29 AM
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I have mine tee'd on the hose just before the heat exchanger but after the oil and power steering cooler. I dont have a sea strainer but I'd put it after the strainer so your not clogging the gauge or the line to the gauge.
11-10-2010, 09:09 PM
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Can anyone tell me were to hookup a water pressure guage on a Merc 525 with a closed cooling system to monitor the raw water pressure that comes from the sea water pick up? I have a sea strainer installled and think it would be helpfull for knowing when it is cloged up.
http://www.offshoreonly.com/forums/g...g-engines.html
Re: Water Pressure gauge hookup on closed cooling engines
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On the 525 there is a pressure sender on the top starboard side of the oil cooler on the back of the motor. We take this sender out and install a tee in the cooler with the sender on top and the gauge to the side. This will show you the same pressure the computer see's and is before the water passes through the coolers.
Steve Schmidt
Competitive Edge Marine
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On the 525 there is a pressure sender on the top starboard side of the oil cooler on the back of the motor. We take this sender out and install a tee in the cooler with the sender on top and the gauge to the side. This will show you the same pressure the computer see's and is before the water passes through the coolers.
Steve Schmidt
Competitive Edge Marine
11-11-2010, 07:15 PM
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Fountain installed a Tee fitting on top of the oil cooler port where the ECM water pressure sensor is located. At least, that is where mine is located. Same as is listed above in the Competitive Edge Marine blurb.
Last edited by bob_t; 11-11-2010 at 07:18 PM.
