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07-05-2017, 05:15 PM
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Join Date: Jan 2005
Posts: 3,642
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source for oil return hose
Is the hose used to connect the oil return lines to the case typical automotive hose or something special? It looks like one of them is weeping a bit of oil that simply tightening the hose clamps isn't seeming to cure. I only need a couple inches of it, so I'd like to source it locally (quickly) if possible. Thanks.
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Steve M.
Ellensburg WA
RV-9 Flying, 0-320, Catto
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07-05-2017, 06:12 PM
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Super Moderator
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Join Date: May 2005
Location: Locust Grove, GA
Posts: 2,624
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I laways replace them with MIL6000D OIL AND COOLANT HOSE from Spruce. Much thicker, and doesn't weep. Lasts much longer. 
Get the MIL6000-6. 2' is enough to do the engine.
Vic
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 Vic Syracuse
Built RV-4, RV-6, 2-RV-10's, RV-7A, RV-8, Prescott Pusher, Kitfox Model II, Kitfox Speedster, Kitfox 7 Super Sport, Just Superstol, DAR, A&P/IA, EAA Tech Counselor/Flight Advisor, CFII-ASMEL/ASES
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www.Baselegaviation.com
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07-05-2017, 07:12 PM
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Join Date: Oct 2006
Location: torrance, ca
Posts: 645
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power steering return hose
Power steering return hose. This hose is on the low-pressure side and returns the oil from the steering gear back to the reservoir. Also, use spring clamps instead of worm-drive. They maintain even pressure as the hose shrinks with age and don't have a single pressure point as worm clamps do.
Below is my -6 with ~700 hours on the hose:
Last edited by hgerhardt : 07-05-2017 at 07:20 PM.
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07-05-2017, 07:57 PM
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Join Date: Aug 2006
Location: santa barbara, CA
Posts: 1,681
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A small amount of Fuel Lube / EZ Turn applied to the return line nipples will generally prevent leaks. Don't put so much that you risk getting a glob of it getting inside the hose.
Erich
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07-06-2017, 10:09 AM
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Join Date: Apr 2010
Location: Ridgeland, SC
Posts: 2,584
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You can find SAE 100R6 -6 hose and it works well. Mil 6000 is really what you need like Vic suggests.
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Tom Swearengen, TS Flightlines LLC, AS Flightlines
Joint Venture with Aircraft Specialty
Teflon Hose Assemblies for Experimentals
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Ridgeland, SC
www.tsflightlines.com, www.asflightlines.com
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07-06-2017, 08:30 PM
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Join Date: Mar 2013
Location: El Dorado Hills, CA
Posts: 696
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Quote:
Originally Posted by hgerhardt
Power steering return hose. This hose is on the low-pressure side and returns the oil from the steering gear back to the reservoir. Also, use spring clamps instead of worm-drive. They maintain even pressure as the hose shrinks with age and don't have a single pressure point as worm clamps do.
Below is my -6 with ~700 hours on the hose:
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What size clamps did you use? Link specs in millimeters.
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Blain
R-22 sold.
RV-8 AW Cert 02-09-17
N82 Sierra Tango
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07-06-2017, 09:08 PM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,281
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Quote:
Originally Posted by Blain
What size clamps did you use? Link specs in millimeters.
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You can find a good assortment of these clamps as Mcmaster Carr. Each size has a fractional range that applies to the tubing O.D.
Larry
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N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
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07-06-2017, 10:40 PM
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Join Date: Oct 2006
Location: torrance, ca
Posts: 645
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Quote:
Originally Posted by Blain
What size clamps did you use? Link specs in millimeters.
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Gates' spec for the hose says that it's 0.655" OD, which is 16.6mm and 17mm is close.
And, as Larry suggested, McMaster Carr is where I got those originally. These are probably what I used (15 years ago).
Heinrich
Last edited by hgerhardt : 07-06-2017 at 10:49 PM.
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07-07-2017, 11:48 AM
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Join Date: Mar 2013
Location: El Dorado Hills, CA
Posts: 696
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Cool. That's what size you had the link open to, but I didn't want to assume.
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Blain
R-22 sold.
RV-8 AW Cert 02-09-17
N82 Sierra Tango
Avatar courtesy of AircraftStickers.com!
Dues gladly paid thru Nov. 2020(my reminder).
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07-07-2017, 03:57 PM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Quote:
Originally Posted by hgerhardt
Gates' spec for the hose says that it's 0.655" OD, which is 16.6mm and 17mm is close.
And, as Larry suggested, McMaster Carr is where I got those originally. These are probably what I used (15 years ago).
Heinrich |
And if you use the MIL-6000 hose the OD range is .688" (17.48 mm) to .750" (19.05 mm)
Would be an 11/16 inch size in good old US units...
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
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La Cholla Airpark (57AZ) Tucson AZ
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