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175 - what is this? |
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orange-is-power ![]() Silver Level ![]() ![]() Joined: 04 Dec 2011 Location: Kentucky Points: 364 |
![]() ![]() ![]() ![]() ![]() Posted: 11 Mar 2016 at 7:32pm |
What exactly is this and what does it do? Has a line coming from top of fuel tank, one coming from up front off the air breather tube, and another line. I forget where it goes to. Just wondering. Thanks.
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allisbred ![]() Orange Level Access ![]() Joined: 28 Mar 2015 Location: Hanover Pa Points: 1011 |
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I believe this is for the air horn pre heater. Please add a few more pictures of the line route. Best regards, Kevin
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Scooterboy ![]() Orange Level ![]() Joined: 06 Aug 2013 Points: 419 |
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That is a fuel manifold, part of the thermostart system.
One line fuel. One line to heater. One line fuel return to tank. I never seen one in operation and I'm not saying I know much about them but I think the system ignites fuel from the heater to warm the inside of the air intake manifold.
Edited by Scooterboy - 11 Mar 2016 at 8:32pm |
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DSeries4 ![]() Orange Level ![]() ![]() Joined: 12 Sep 2009 Location: Ontario, Canada Points: 7505 |
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x2. You are correct. |
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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orange-is-power ![]() Silver Level ![]() ![]() Joined: 04 Dec 2011 Location: Kentucky Points: 364 |
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So it's just something to aid starting in cold weather? Does it work automatically or how/when does it get used? Every time you start the engine? It appears to be original equipment. Thanks for the replies.
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DSeries4 ![]() Orange Level ![]() ![]() Joined: 12 Sep 2009 Location: Ontario, Canada Points: 7505 |
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It is original equipment. It is activated when you turn the key to the "start" position and hold it for 30 seconds or a minute. It's just another kind of manifold heater.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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Scooterboy ![]() Orange Level ![]() Joined: 06 Aug 2013 Points: 419 |
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I know a wire goes from the heater to the ignition switch so one would think there is a position on your ignition switch to turn the heater on when needed. Probably once the ignition switch is moved to a different function the heater would be off.
Clean the area around the heater on the intake and see if the instruction plate is there. Edited by Scooterboy - 11 Mar 2016 at 9:33pm |
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BrianC ![]() Orange Level Access ![]() Joined: 16 Jun 2011 Location: New York Points: 1619 |
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Yes the Perkins Thermostart system. If the 170/175 ignition key works like the 160 I have, to start the engine you turn the key all the way clockwise, then push it in, that activates the starter, right?
Prior to pushing in, with the key turned fully clockwise, electric power is sent to the thermostart valve. After 30+ seconds it heats up hot enough to open a valve letting fuel dribble in, it catches on fire. Then you push it in to crank the engine. So the fires heat in the intake manifold helps start cold start. Is it better than glowplugs or high wattage intake manifold grids? Perkins have a reputation for good cold starts. I think some Fords use the system, and most of the Perkins MF tractors. Try it out, hold it clockwise 30-60 seconds, then see if that valve is warm. I don't know what could go wrong, but stuck valve, gelled fuel crud in that supply line. The valves are available. |
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Eldon (WA) ![]() Orange Level ![]() ![]() Joined: 11 Sep 2009 Location: Spokane, WA Points: 7765 |
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I've got 8 of these tractors and haven't found one that worked yet....
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