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Thread: Drain Valve

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  1. #1
    Join Date
    Mar 2000
    Location
    Apex, NC
    Posts
    171

    Default Drain Valve

    I'm having a hard time finding the part numbers for the hose that goes from the Fuel Filter Manager to the water drain valve and the hose that leaves the drain valve and hangs loose. I realize the latter is probably just a generic diesel fuel line (ID ?) but the former has some type of fitting on it. Mine is leaking due to the shop tech trying to reroute it and they stretched it so tight that is leaking at the fitting. I tried LMC, RockAuto and most of the GM sites. So far no good.
    DP member #38 1992 Chev K2500 RPO C6P 6.5TD 150K miles
    2014 John Deere 1025R

  2. #2
    Join Date
    May 2014
    Location
    us, ga
    Posts
    166

    Default

    Im building an engine and literally just replaced mine last week. Fitting?? Mine had hose clamps. Just match the hose at any auto parts store 3/8" fuel line I think?

  3. #3
    Join Date
    May 2014
    Location
    us, ga
    Posts
    166

    Default

    Correction: 1/4" fuel hose

  4. #4
    Join Date
    Mar 2000
    Location
    Apex, NC
    Posts
    171

    Default Update

    Yes, hose ID is .25 inches. Measured with dial calipers. I could find no info for '92 6.5TD but the local Chevy dealer found an exploded view of a 6.2 NA that uses a different fuel filter but a similar drain valve setup. Parts # 09438257 (fuel line) and 10154675 (drain valve). Problem is the fuel line part is 13mm (.5 inch) so that's a no go. You can see in the picture the line from the FFM to the drain valve has some sort of fitting. The hose is leaking from the part where it appears to be crimped. I haven't disassembled valve yet so I might be able to just clamp line to valve. And no, I'm not the person that mounted the valve to the bottom of the thermostat housing.
    Attached Images Attached Images
    DP member #38 1992 Chev K2500 RPO C6P 6.5TD 150K miles
    2014 John Deere 1025R

  5. #5
    Join Date
    May 2014
    Location
    us, ga
    Posts
    166

    Default

    Take the line off, put a nipple on the valve end, 1/4" fuel hose, and hose clamp it.

  6. #6
    Join Date
    Dec 2003
    Location
    Yukon Canada
    Posts
    1,620

    Default

    Under the crimped looking thingy is a regular hose barb.The crimped thingy can be cut off or ignored.Add a hose clamp to what you have or change the line and add a hose clamp and you will be good to go.
    I have reused many of those kind of fittings.Out in bush where i live you just have to get things done because the parts stores are 100 miles away if i don't have it.
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  7. #7
    Join Date
    Mar 2000
    Location
    Apex, NC
    Posts
    171

    Default Result

    Drain valve finished. No more leaks. Nothing is ever as easy as it looks . Never. Now on the the next of many problems.
    Attached Images Attached Images
    DP member #38 1992 Chev K2500 RPO C6P 6.5TD 150K miles
    2014 John Deere 1025R

  8. #8
    Join Date
    Dec 2006
    Location
    Nashville, NC
    Posts
    43

    Default

    I feel your pain. In the process, myself, of updating my 94. Just had the fuel lines replaced, new sending unit with the sock deleted, new fuel tank, Carter lift pump, pre lift pump fuel filter, Fluidampr harmonic balancer, and billet crankshaft pulley. Fortunately, I have a local shop that does this kind of work, provided they don't have to get into the engine. Next project will be glow plugs and injectors but with only 87k miles on the clock, it will probably be awhile before it actually needs to be done. I'll drop the money into repairs rather having a monthly payment that rivals my mortgage. Hoping that fixing or replacing known issues will keep it going for another 20+ years.
    94 K2500, Ram Air, Banks 3" Exhaust, Soot Trap Delete, 3.73 Gears, OPS Bypass, Carter LP, Tank Sock Delete, Lift Pump Pre-filter, Billet Crank Shaft Pulley, Fluidmpr, 91 Gallon RDS Auxiliary Fuel Tank, Dual Relocated Oil Filters

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