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    • Cummins Marine Forum Topics
    • Cummins Onan Generator oil dipstick

      This topic has 1 reply, has 2 voices, and was last updated byTony Athens 3 years ago

      July 21, 2020 at 7:15 pm Have the MDKUB model, and missing oil dipstick. Need part number 123-1988, and according to Cummins, is obsolete. Have also been checking for used parts and nothing. Any suggestions or alternatives?

      Started by: Jim Gabilanes in: General Discussion

      1 Reply
      July 22, 2020 at 4:38 pm Drop me a note direct with ALL the details.. Include the engine serial number, generator serial number, and spec number. It’s all there on the side of the generator end. tony@sbmar.com

      Last Post by: Tony Athens posted: 3 years ago

    • Expansion Tank broken hose fitting

      This topic has 3 replies, has 4 voices, and was last updated byTony Athens 4 years ago

      August 12, 2019 at 3:21 am I have the 1998 Diamond 450’s with the blue metal expansion tank. During my routine checks below, I noticed the black hose from the plastic overflow tank, was disconnected from the fitting just under the cap on the expansion tank. Upon closer inspection, the metal hose fitting was broken off. With some Rescue tape, I was able to keep it in place and ended up with a small leak for the ride home. What is the recommended fix?

      Started by: Jim Gabilanes in: Cummins Marine Engines

      3 Replies
      January 27, 2020 at 5:50 pm Logan, Unless your are an extremely competent and experienced guy with soldering, this is a very difficult piece to install…………………..You are dealing with thin brass and 14 Gauge steel sheet with many lbs of mass vs. 1-2 ounces of thin brass. Solder– 95-5 would be my choice.

      Last Post by: Tony Athens posted: 4 years ago

    • Fuel Sending Unit

      This topic has 1 reply, has 2 voices, and was last updated byRob Schepis 4 years ago

      August 14, 2019 at 9:09 am Have a pair of 450 Diamond series engines in our 1998 Tiara 3500 Express. Both gas tanks replaced with new sending units matched to the VDO fuel gauges. Both tanks 175 gallon capacity. Ran out of gas on port side engine, even though fuel gauge showed little over 1/4 tank. Generator is off port side as well. Starboard side showed little less than 1/2 tank. Added 10 gallons to port side tank to get to fuel pumps. Port side tank fills up with 108 g…

      Started by: Jim Gabilanes in: Instrumentation & Electronics

      1 Reply
      August 14, 2019 at 2:00 pm Sounds like you should have had adequate usable fuel – I would pull the tanks pick up tubes and inspect them.

      Last Post by: Rob Schepis posted: 4 years ago

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