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03-12-2022, 02:00 PM #1
Need help finding flare fitting for trim hydraulics
I am replacing (making) new lines for the single ram trim...The old rubber hoses have deteriorated and I need to lengthen/modify the solid line end under the hydraulic steering as well so it doesn't hit...Looking to make them similar by connecting stainless hard lines to a rubber/braided line but without having to swage or press a fitting on like the Merc ones are. I need help finding a stainless 1/4 male flare fitting (4AN?) I can screw into a 1/4 hydraulic hose so I can connect a flared 1/4 stainless hard line on it. Anyone help out here?
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03-12-2022, 04:55 PM #2
Or if you guys could tell me how you would rebuild the lines, I would like the keep the originals I have untouched and build mine own, as close to the originals as I can...here are some pictures you can see the hose is crimped into the hard line, how could I make this a removable fitting style without crimping? Any ideas?

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03-12-2022, 05:43 PM #3
The up /out pressure is 3600 psi + - 200 psi. Minimum 2600 psi.
The in / down pressure is 1400 psi.
No place to use cheap **** hardware ..
A hydraulic shop that carries -4 stainless braid / teflon core hoses along with straight and 90* stainless ends in either crimp or reusable will be able to fix you up. It's not cheap by any means .. but you can get what you need. Take your old hoses and a list of exact lengths and which hose ends go where. That way, any mistakes, it's on them .. not you.
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Aaronhl thanked for this post
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03-12-2022, 05:57 PM #4
I brought these parts to the hydraulic shop today and they said its a very custom job and not something they normally do because they cant crimp hard line into the soft hose...
I found the hose the Mercury uses it is 1/4 SAE 100R7 Thermoplastic for up to 3000 working pressure, seems like the hydraulic shop only stocked the "generic" larger diameter double metal wall hose
Maybe I could get them to crimp some female ends onto the 1/4 SAE 100R7 hose so that I can attach my own bent and flared hard line??? Are stainless steel fittings necessary? I would use stainless steel hard line
Any better ideas?
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03-12-2022, 06:22 PM #5
Moreland hose on Long Island. Reach out to Billy. His name is Hoser on this site
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Aaronhl thanked for this post
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03-12-2022, 08:14 PM #6
You should be able to use a female JIC on the soft hose, and a Male with a bubble flair on the hard line. I believe someone has produced thru transom fittings also.
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Aaronhl thanked for this post
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03-12-2022, 09:43 PM #7
I have bought fittings from hoser before .. solid dude ..

I never said anything about rubber hose. Arron , go back and read it again.
You can use steel fittings .. You'll do the same job again next year ..
If you want new stock hoses .... # 26 .. one of each number ..

Order
Quan
1 1494-847800A03 BRACKET ASSEMBLY, Transom - Port ACT $1,477.50 $1,323.33 1 2 1495-847801A03 BRACKET ASSEMBLY, Transom - Starboard ACT 
$1,717.71 $1,538.48 1 3 847798A02 --WEAR PAD KIT ACT 
$174.49 $164.12 1 4 10-86843 ----SCREW, (#10-24 x .500) ACT $0.90 $0.88 4 5 16-8M0034469 STUD 843013 SS/ACT 
$38.11 $37.56 2 6 54-88512 CLAMP ACT $6.70 $6.54 4 7 10-88829 SCREW, (#10-24 x .500) ACT $3.10 $3.03 6 8 11-858869 NUT, (.875-14) ACT $4.40 $4.30 1 8 11-82671327 NUT, (1.00-14) 859133 SS/ACT 
$8.80 $8.59 1 9 13-88750 WASHER ACT $6.00 $5.86 2 10 826125A1 TILT TUBE ACT $255.92 $235.86 1 11 85035T SPACER ACT $199.83 $184.17 1 12 10-677551 SCREW, (.500-20 x 4.500) ACT $0.00 $0.00 2/4 12 10-677552 SCREW, (.500-20 x 6.500) ACT $25.08 $24.63 2 13 12-28421 WASHER, (1.5 x 3.05 x 0.13) Stainless Steel ACT $3.50 $3.42 4 14 11-82671117 NUT, (.500-20) ACT $8.10 $7.90 4 15 11-826709117 NUT, (.500-20) Stainless Steel ACT $9.80 $9.56 2 16 10-70732 SCREW, (.250-20 x 2.00) ACT $3.30 $3.22 4 17 12-29245 WASHER, (.281 x .500 x .060) Stainless Steel ACT $1.10 $1.08 4 18 85026T PLATE ACT $44.33 $43.54 2 19 10-28636 SCREW, (.250-20 x .750) ACT $1.60 $1.57 4 20 12-29245 WASHER, (.281 x .500 x .060) Stainless Steel ACT $1.10 $1.08 4 21 16-8M0034451 STUD, (.312-24 x 1.380) 54343 SS/ACT 
$38.92 $38.22 4 22 89949A1 PLATE ASSEMBLY ACT $79.67 $76.63 1 23 12-843108 WASHER, (.330 x .560 x .060) Stainless Steel ACT $0.90 $0.88 4 24 11-82670911 NUT, (.312-24) Stainless Steel ACT $4.40 $4.30 4 25 32-89024001 HOSE ASSEMBLY, Hydraulic (10 Feet) Pump Up - Port at Transom ACT 
$141.57 $130.44 1 25 32-89023001 HOSE ASSEMBLY, Hydraulic (10 Feet) Pump Down - Starboard at Transom ACT 
$141.57 $130.44 1 26 32-96993 HOSE, Hydraulic ACT 
$247.00 $227.64 1 26 32-96994 HOSE, Hydraulic ACT 
$294.83 $271.72 1
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Aaronhl thanked for this post
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03-13-2022, 01:53 AM #8
A little info that might or might not help.
AN is compatable with JIC, although rated differently.
Confirm that what ever you use is rated for the pressure.
The reusable fittings Chaz speaks of are called compression fittings, more than likely made for that fancy braid covered teflon hose. Flairless compression fittings for hard lines are a real thing.
Not for certain on merc, but alot of times pipe thread is used to tap in to the hydraulic cylinders.
I'm not experienced in building that fancy stuff, but have decades of experience destroying the cheap stuff on heavy equipment. High pressure explosions, ain't no joke.
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03-13-2022, 05:52 AM #9
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03-13-2022, 08:21 AM #10
An flare 37, JIC 37, SAE 45
Now if you would have called b.s. on my bubble flair post.
I might have been more inclined to believe you. As I'm not sure if that's going to hold the pressure required, or if the fittings are available.
As to compatibility between JIC and AN it depends on who you talk to, and the actual quality of the fittings.Last edited by OnPad; 03-13-2022 at 08:38 AM.
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03-13-2022, 12:50 PM #11
I get what you are saying you dont wanna cheap out on these parts, I have no mind buying OEM however I need to modify (bend)+add length to the end to go around the hydraulic steering and jackplate cross member (when the engine is tilted up it kinks the line) So I figure why not try to make my own set, with professional help of course, maybe it would be best to have someone crimp the connections for me...and learn about hydraulics at the same time
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03-13-2022, 12:56 PM #12
Here is a picture with the engine trimmed down, wish I had a pic trimmed up before the boat was shrink-wrapped...anyways the steering ram pivots down and pushes the hard lines into the jackplate cross member, I think if I put the jackplate up and then trim, it wont kink, but I'd prefer to have full function regardless of how high the jacklate is, so I think if I run the end of the hard lines vertically to connect to the hose under the jackplate crossmember (with hose play) it will work good...I guess I could add another flared section to the OEM hoses and bend them back down too...

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03-13-2022, 01:01 PM #13
I appreciate the comments so far helping me out...I think I may need to wait until I have access to the mid section to look at some things, but looks like there is a website - DiscountHydraulicHose.com - that will make the 1/4 SAE 100R7 with male flared ends for about $100 each which would then allow me to add my own custom bent flared 37 degree 1/4 SS sections to each side (the hydraulic shop I went to did say the hoses I have were -4 7/16 fine 37 degree as they connected it to there fittings...$100 for each hose (would need 2) seems reasonable because the hardline stainless and screw on fittings are pretty cheap...
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03-13-2022, 01:13 PM #14
Don't make it harder than it is ...

The only time the system goes on the bypass (max pressure) is when someone is either at the top of the stroke, tucked under and continues to lay on the trim button. So there is a bit of "moron factor" built into the system.
The Cylinder ... is -4 inverted flare female on both ports.
Never said rubber, but mentioned teflon interior .. for the third time now.
Reusable ends mandrel the teflon inside. Wedge between the teflon and stainless cover (sometimes with a ferrul, others have that part built into the body) and the nut captures the stainless braid on the outside.
Yes, Army / Navy and JIC are both the same @ 37*
Hose ends come in flare, O-ring, AN, British, and a few others I can't think of right now. Every situation you could ever come up against has been dealt with between WW-2 and now .... so they have made an adapter for all occasions.
Could Mercury have made it easier... Pppfftttttt of course. But then all they want is $500.00 + dollars for two hoses ..
Air condition, house plumbing, are 45* SAE are all the same diameters except for -6 .
No, you can't just run hard line, it needs to move (be pliable). The hose acts as a bellows, to avoid fatigue fracturing.
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03-13-2022, 01:38 PM #15
Chaz as always thanks for the knowledge n lernen z lol
As far as the Teflon PTFE stainless braid - I am having trouble finding a -4 size Stainless male flared end I can twist on, do you happen to have a link for one?
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