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Ford Tractors Discussion Forum
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Ford 7700

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motoOzarks

08-01-2020 10:53:54




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I've taken trade on a 7700.

I have a few questions to figure out. Any help is appreciated.

Here's a pic of a brace that was lying on the platform. Any ideas where it goes?

Here is a pic of the control panel that I can't read. Could somebody snap a pic of theirs so I know what these are?

Here's a pic of injector pump with a line missing. What / where does that need to go?

thanks





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sotxbill

08-06-2020 18:00:18




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
and... the voltageregulator is located there also.. just looked at a 7700 in the shop...



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nashranch

08-05-2020 07:56:12




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Moto.. I do have the big shop repair manual and op manual For Sale if you're interested. Send me a message



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sotxbill

08-05-2020 06:17:09




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Should be a temp sensor under the battery box that changed the charge rate via temperature. I think....its about a 200 ohm equivalent, but you need to "search" back for the correct value if yours is damaged...



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motoOzarks

08-04-2020 20:10:21




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Yep
a little goes a long way

Would somebody explain what the electrical deal is under the battery box?

thanks



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motoOzarks

08-03-2020 20:18:18




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
What's the trick to removing the air pre cleaner from the stand up pipe for hood removal?

The pipe is metal so I assume it is rusted some



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Bern

08-04-2020 05:56:59




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 Re: Ford 7700 in reply to motoOzarks, 08-03-2020 20:18:18  
Heat



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motoOzarks

08-03-2020 20:15:42




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
That makes sense. thanks

I got some 5/16 compression rings at the hardware store and replaced the outlet side.

The metal line was toast so I cut it off where it was straight put on the brass ring an tightened it down. No leaks.

pics are of ends of pipe, the rubber line end has the bulge

the other was all wrecked.





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sotxbill

08-03-2020 18:45:22




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Top tank gavity fed to the bottom tank... the bottom tank had a part metal/ part rubber, then part metal line that fed the lift pump, then filter and then the pump...
the rubber line in the middle was bad about getting cracks in it and then loosing prime... the lift pump on the side of the sims could also fail,,
so basically the tractor would run great as long as the top tank had fuel in it, and would be increasingly hard to start as you run the fuel level down the the bottom tank.
bottom tanks could also get pin holes from water or collisions with obstacles and leak as well. Some have screws/rubber washers.... in the bottom of the tank to close pin holes. :shock:

the switch.... only changed the fuel gauge from the top sending unit, to the bottom sending unit.. assuming the sending units were still working and not corroded up.
I have to change the rubber line on most every dual tank ford tractor I get in... I have 4 in the yard currently. That usually fixes the start problems as well as cleans up the goo problem on the top of the transmission area where the rubber line crosses over. :)

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motoOzarks

08-03-2020 12:02:01




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
The tractor has two fuel tanks. One under the hood and one slung underside.

The lower tank has been disconnected and the top tank gravity drains to the primer pump (so the fitting leaks all the time).

Was wondering how the dual tank system works. Does it gravity feed from top tank to bottom and then pumped from there?

Or do you choose one tank or another with a switch?

thanks

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motoOzarks

08-03-2020 11:58:21




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
I dug tape out of the threads and may just try some new on there.



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sotxbill

08-03-2020 06:41:05




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  

pull the collar back, and wrap about 8 wraps of Teflon tape, then push collar back and tighten... this will usually fix the ooze/leak.

some of those also had the rubber washer on them to help seal as well... and the tape trick would tighten them up also.



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motoOzarks

08-02-2020 20:24:44




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Wanting to know

I've got leakage where the metal fuel lines hook up to the primer pump. Most on the out side.

The ends seem to have a ferrel ? on them. A compression ring I would call it.

Does this seem right? As in I can file the end of the metal pipe a bit and put on a new one to see if it will crunch into place.

Is the pipe itself flared? It doesn't look like it.

Whats on there looks a bit used.....threads are all good.

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motoOzarks

08-02-2020 20:13:17




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Good to know. I've heard the term but had no reference to it.

What does the up/down knob operate?



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Sean in PA

08-02-2020 13:41:42




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Quoting Removed, click Modern View to see

I wasn't sure if the 7700 had the tach driven off of the oil pump drive or the injection pump. If it has the tach drive on the other side near the oil filter then it's driven off of the oil pump drive, which means that your injection pump may be from a later model tractor, as they switched to driving the tach off of the injection pump at some point, and I wouldn't think that it would have come form the factory with both.

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Bern

08-02-2020 15:18:26




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 Re: Ford 7700 in reply to Sean in PA, 08-02-2020 13:41:42  
I'm fairly certain that all 7700s came from the factory with the tach driven by the oil pump drive gear. In fact, I can't think of any 4-
cylinder tractors that were driven by the injection pump with the exception of the 7000. Since the injection pump says "Simms" on it, it's likely older than the tractor, and was likely speced for a 7000.



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motoOzarks

08-02-2020 13:01:26




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
It has three sets of remotes on the back

The lever closest to the fender has notches in the guide for holding it in a position.

The parts diagrams (Messecks) doesn't show decals in detail.

I can experiment when I get it started but would like to know what runs the third remote.

thanks



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Bern

08-02-2020 15:21:30




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 Re: Ford 7700 in reply to motoOzarks, 08-02-2020 13:01:26  
The third remote is not really a remote, rather it's part of the Load Monitor system, a feature that most people never bother to use because it's rather complicated and requires a special cylinder. Regardless of whether you use it or not, it is not equivalent to a double-acting spool valve, so you can consider it to be pretty much worthless.



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motoOzarks

08-02-2020 12:55:53




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
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thank you



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motoOzarks

08-02-2020 12:55:05




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
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I see there is a cap missing on the end as well.

The tach cable attaches on the other side of the engine.....is there more than one cable?

thanks



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motoOzarks

08-02-2020 12:53:23




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
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Thank you

The parts diagram does not go into detail......

So this would be for overflow or drain of some sort? just needs a hose on it?



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sotxbill

08-02-2020 06:07:10




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
memory is bad, but is this the model that required the 90 degree block on the tach drive to reverse the direction of turn??... no I believe that is the 7000 with the sims pump...



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Bern

08-01-2020 19:05:54




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
The bracket goes under the hood and helps to support the exhaust pipe. You can see it in the parts catalog under the exhaust system.



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Sean in PA

08-01-2020 14:15:55




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
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And the proofmeter drive cable.



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Dieseltech

08-01-2020 11:23:08




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  
Injection pump is missing the pigtail drip tube..



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motoOzarks

08-01-2020 10:56:14




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:53:54  



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Matt from Oz

08-01-2020 18:04:56




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 Re: Ford 7700 in reply to motoOzarks, 08-01-2020 10:56:14  
Hi Moto

The red lever is PTO on/off The black lever closest to right hand side mudguard is the hydraulic selector for draft or position control and speed of response for 3pl hydraulics. You probably don't want to hear this but it is all the manual. You will need to work out if it is equiped with load monitor or not? Should be able to do that from the number and type of remote hydraulic couplings it has on the back. Ford put on a strange set that look different to any pioneer or other ones I have seen. Sorry I can't tell you which way the levers go if you want there should be a decal set for this and as I said it is in the manual.

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