Sierra 18-5899 Oil Pressure Sender, Medium
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For marine use, this 18-inch boat anchor is a good choice, but only if it will remain submerged With a 1/8"-thick frame, the 5899 is an amazing choice It has a 27 NPT thread and produces an OHM range of 240-270
It does not matter whether the gauge is a 80 psi gauge or whether your port for the sender excepts 1/8" NPT.
A scale of 240 Ohms to 33 Ohms is used. A resistance of 230 Ohms at 5 psi, 150 Ohms at 25 psi, and 100 Ohms at 50 psi is found. There should be no greater than or less than 2% error in all measurements Only 10% of specifications are met. This item is direct from the
Selected User Reviews For Sierra 18-5899 Oil Pressure Sender, Medium
I used this as a replacement for a hydraulic oil pressure gauge that had been installed in a motorhome my wife recently acquired. Our decision was to remove that gauge and to return to an OEM style gauge with an electric signal instead, because I don't like the idea of a high pressure oil line sending a gauge to within a foot of my crotch while piloting a 15,000lb brick. I've used it many times, and it works every time.
are really Sierra senders, if I am not mistaken. The quality is excellent and the units are reliable. Your gauge should have a range that is appropriate. Furthermore, it is important not to seal threads with any type of sealer. Brass is used for the threaded part for this reason. Like all senders, this one works by getting ever closer to the In the case of erratic readings, the lower the pressure, the more the sender is grounded to the sensor wire. If the motor isn't grounded solidly to the sender, it may give false low readings. Especially esp. Teflon tape is not to be used. This brass will form a seal on its own because it is soft. Moreover, you will need another camera that is able to hook up to two gauges if you have dual steering stations. check your gauge simply connect the sensor wire to ground for a short period of time. There should be a high side peg on the gauge.
Sadly, the pressure device I received was dead when it arrived. In response to varying pressure, it should provide a variable level of resistance. However, the voltage measurement was dead short, with no resistance, all the time. I bought another one from a local dealer, but it worked correctly, at twice the price. I'm sure this was.
A used one was cheaper than a new one, so I took a chance. Prior to installation, I measured the resistance at 0 PSIG and got a value of It's a 9. 240* should have been the correct answer. Was it just that I tested it first? Could that possibly explain why it was previously returned? When it comes to buying "like new", I won't do it because it isn't really new.
Despite the low pressure gauge readings, the engine kept failing. The oil pressure sending unit was the cause of the problem, according to some testing. There was fluctuation in the multimeter readings. I purchased it and I tested it prior to replacing A perfect reading of 240 ohms was obtained. Because of the need to ground the unit on the block, thread sealer was used instead of felon tape.
Really nice quality part that works The original oil pressure switch was part of the Volvo Penta engine, and then this one was used to replace it. I really like it.
I am pleased with the quality of this unit. You must ensure that the unit that you are replacing has a low resistance. It is important to match the specifications of the parts before buying. One I bought from a car part's store turned out to be defective, completely out of resistance, and cost me a lot of time and frustration. There was no proper oil pressure shown by the gauge. Therefore, check the user.
The sending unit is of high quality. Using it with the Sierra 80 psi oil pressure gauge, it gave more consistent readings and had a more robust assembly than most other sending units I have used previously.
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