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720 Garden Tractor |
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popjohnny
Bronze Level Joined: 06 Apr 2013 Location: Waterville, MN Points: 6 |
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Posted: 14 Apr 2013 at 4:04pm |
I am in the process of installing a 25 HP Kohler Command engine, in a friends 720 Allis Garden tractor.
I've had to make a motor mount plate. I've got the front pto mounting plate done, and installed. I have an adaptor to bolt to the flywheel, for the hydrostat belt pulleys, and rear pto shaft mounting assembly. I've had to notch the frame on the left side, to clear the oil cooler on the engine, which almost fit, without the minor notch. I now have to cut, and re route the hydraulic lines, going to the front hydraulic couplers, as where they are now, they will be in the way of the oil filter, on the motor. I cut the lines, and took a piece to the local auto parts store, to get some line. They told me that brake line should work, and sold me some 5/16 brake line and fittings. When I got home, the fittings won't fit the original line. Dummy me for not checking that at the store. So my question is. What size is the hydraulic lines? I know they are thicker walled than the brake lines I bought. Also I would need the fittings to make the repair. Would a compression fitting work OK, or should I use flared fittings? The Hydrostatic pump, pumps 2.5 gpm, and the pressure is at 550-750 PSI. ( I found the specs on another web site) I appreciate any and all, responses. |
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D-17_Dave
Orange Level Joined: 11 Sep 2009 Location: Mocksville NC Points: 990 |
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Easiest thing would be to make hoses for this and do away with the metal lines due to the odd size of the lines. You'll just need to tie the hoses in place so they don't rub anything moving in the torque tube.
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Yea, I can fix that.....
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Coke-in-MN
Orange Level Access Joined: 12 Sep 2009 Location: Afton MN Points: 41229 |
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The brake lines seem to have their own thread but you can get a adapter to change them over to pipe thread or ? The brake line pressure would be in the 500 + PSI and brass fitting should stand that pressure but that is about the limit of proofing on them .
Flare fittings or you would need hydraulic compression fittings which are different than most you will find. I used what was called a SWEDGE LOCK fitting which uses a tapered furel and another ring to complete the hydraulic seal on tube. Also if you try to flange fit brake line be sure to double flare it or it will crack.
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Faith isn't a jump in the dark. It is a walk in the light. Faith is not guessing; it is knowing something.
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coggonobrien
Orange Level Access Joined: 14 Nov 2010 Location: Eastern Iowa Points: 1807 |
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pictures???
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