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  1. T

    Help with bolts

    "I guess I need a primer on bo "I guess I need a primer on bolt threads. MM-fine or coarse, SAE-fine or coarse These I get. I thought my AQD40A would be metric, but on the head of an alternator bolt it has UNF stamped on it. I tried cleaning the threads with a M12-1.5 die. Close, but shaved...
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    2 micron fuel filter

    "I have a Racor 500 primary fi "I have a Racor 500 primary filter. I want a secondary (engine mounted), spin on element that is less than the 10 microns in the Racor. I'm finding none on my own. It makes no sense to me to have a 10 (or 2 if I wanted) micron primary, then not be able to go...
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    Tach wire

    "before I buy a new alternator "before I buy a new alternator for my AQD40A, they say I need to know if it has a tach pickup. It has 1 black (separate ground?), 1 heavy white (charge), and 2 small wires combined together on one connector. Does this help anyone help me? Thanks, Ted"
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    Old diesel treatments

    "I've 2, 100 gallon tanks "I've 2, 100 gallon tanks (presently each 1/2 full) The tanks are cross connected with no shutoff valves to allow isolation between tanks. We go long periods between travel, so I guess you can say that at any one point, we have "old fuel" and likely will always...
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    Need source for alternator

    "I have the AQD40A. The altern "I have the AQD40A. The alternator siesed up & won't turn. Time for a new one. Anyone have a source (besides Volvo), for reasonable priced alternator that fits rgis engine? Thanks, Ted"
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    AQD40 idle choking down

    "I'm going to repost yhis "I'm going to repost yhis to see if the forum will reconise my changes. I notice my 40 chokes down if I leave it @ idle. Sounds like a giant hand is slowly squeezing it slower & slower, until it stops. Filter is clean, hatch is open & drive is in neutral. If I...
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    AQD40A choking down idle

    "I notice my 40 chokes down if "I notice my 40 chokes down if I leave it @ idle. Sounds like a giant hand is slowly squeezing it slower & slower, until it stops. If I increase throttle a bit, it stays running & doesn't sound like it's laboring to do so. We just completed a 1,000 mi. trip & had...
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    DD JT 82TI

    "Can someone tell me about thi "Can someone tell me about this model? JT 82TI Are they as good as the 6V71? Parts available? Dependable? Fuel guzzlers? I'm looking at a boat powered by an '85 model and have not heard of them. Thanks,"
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    Perkins T200 information

    Often when listing a boat for Often when listing a boat for sale the descriptions are sketchy. Can anyone expand on "Perkins T200s" No. of cyl? HP.? Age? parts availability? Reliable? Anything? Thanks.
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    Fairbanks 10 cyl questions

    "Since I know nothing. I would "Since I know nothing. I would like input on this engine. Are they tough, long runners? How are they to repair? Simple or complicated? Trustworthy or fickle? What HP rating is a 10 cyl.? Fuel guzzlers? I am looking at buying a old tug (80') for a livaboard, so...
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