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EarlyBronco
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PostPosted: Tue Mar 05, 2013 4:10 pm    Post subject: 641 questions Reply to specific post Reply with quote

Howdy everyone from KS, not my first old tractor (also have a JD 3010) but I just picked up a 641 Ford tractor and had a couple questions and I apologize ahead of time since these questions have been asked before.
1st) when I bought this tractor the seller thought it was a 600 series, but after I checked the serial# and its stamped 641. But the serial# has me confused on the production year. #19187<> (diamond) since it starts with 19 instead of 11 I'm uncertain of production year
2nd) the tractor runs but it seems to idle rough so I picked up new; plugs, wires, rotor, cap, points, condenser, sight glass filter etc.
The hydraulics are slow so I want to change the fluids in the; motor, diff, hydraulics, trans but there's a LOT of recommendations out there for the types of fluids to use, I just want something that I know is safe to use.

Thanks ahead of time guys for any help
 
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petra79
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PostPosted: Tue Mar 05, 2013 4:31 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

Year Starting Serial Number
1957 1001
1958 11977
1959 58312
1960 105943
1961 131427
1962 155531


Yours would be a 1958
 
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souNdguy
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PostPosted: Tue Mar 05, 2013 4:42 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

not sure why the sn beginning with 19 vs 11 bothers you.. 11xxx was the beginning number for 58.. yours is a mid early 58.

use a utf meeting M2C134 spec for teh hyds. ok to use it in the trans and diffy as well.. otherwise use an 80w90 in the diffy and trans.

I reccomend utf in all 3 if you have a leaky seal between the diffy and hyds where the pto shaft passes thru.

i like a 15w40 for the engine

gap points and plugs to .025
 
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EarlyBronco
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PostPosted: Tue Mar 05, 2013 4:43 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

petra79 wrote:
(reply to post at 17:31:53 03/05/13)

Thanks very much Petra, ok I think I understand now, it's not a specific number or prefix. If its from 11977-58xxx it's a 1958, correct?
 
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petra79
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PostPosted: Tue Mar 05, 2013 4:45 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

EarlyBronco wrote:
(quoted from post at 20:43:11 03/05/13)
petra79 wrote:
(reply to post at 17:31:53 03/05/13)

Thanks very much Petra, ok I think I understand now, it's not a specific number or prefix. If its from 11977-58xxx it's a 1958, correct?


That is correct. From the first# in 58 till just before the first# in 59 is a 1958
 


Last edited by petra79 on Tue Mar 05, 2013 4:46 pm; edited 1 time in total
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souNdguy
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PostPosted: Tue Mar 05, 2013 4:47 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

ya beat me to the punch Smile
 
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EarlyBronco
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PostPosted: Tue Mar 05, 2013 4:48 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

soundguy wrote:
(quoted from post at 17:42:27 03/05/13) not sure why the sn beginning with 19 vs 11 bothers you.. 11xxx was the beginning number for 58.. yours is a mid early 58.

use a utf meeting M2C134 spec for teh hyds. ok to use it in the trans and diffy as well.. otherwise use an 80w90 in the diffy and trans.

I reccomend utf in all 3 if you have a leaky seal between the diffy and hyds where the pto shaft passes thru.

i like a 15w40 for the engine

gap points and plugs to .025


Thanks! That's info I need!
It's my fault on the sn#, I was trying to decode it like a classic car VIN, where a specific number or prefix indicates a specific year.
But on these fords it's production #'s from 1-20 is in a particular year, my fault, sorry guys, knuckle head here lol
 
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petra79
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PostPosted: Tue Mar 05, 2013 4:48 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

soundguy wrote:
(quoted from post at 20:47:20 03/05/13) ya beat me to the punch Smile


Learned from the best Cool
 
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souNdguy
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PostPosted: Tue Mar 05, 2013 4:53 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

quick followup too!
 
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EarlyBronco
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PostPosted: Tue Mar 05, 2013 8:38 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

The new spark plug wire set I picked up is a little different, the ends of the wires (where the connector attachs to the spark plugs) don't actually "clip" onto the plug, they look like they just "touch" the end of the plug (?) is that correct?

I picked up some Rotella T 15w40 to change the oil, but wasn't sure if my oil filter is a "spin-on" or cartridge (?) ill have to check tomm
 


Last edited by EarlyBronco on Tue Mar 05, 2013 9:06 pm; edited 1 time in total
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reb-in-pa
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PostPosted: Wed Mar 06, 2013 4:01 am    Post subject: Re: 641 questions Reply to specific post Reply with quote

Hope those new spark plug wires are copper core. None of my four-cylinder Fords like the newer resistor wires -- hard starting, slow response at acceleration, etc.

Good luck.

Ray
 
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EarlyBronco
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PostPosted: Wed Mar 06, 2013 9:06 am    Post subject: Re: 641 questions Reply to specific post Reply with quote

reb-in-pa wrote:
(quoted from post at 05:01:14 03/06/13) Hope those new spark plug wires are copper core. None of my four-cylinder Fords like the newer resistor wires -- hard starting, slow response at acceleration, etc.

Good luck.

Ray


They are copper core, I'm glad you told me that! Something to remember.
I'm just concerned because the terminal doesn't clip onto the plug, it looks like it just touches it (the plug)
 
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souNdguy
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PostPosted: Wed Mar 06, 2013 11:09 am    Post subject: Re: 641 questions Reply to specific post Reply with quote

there should be a cup or sleeved end that slides over and rides the tip of the plug.. whether it is a fancy one with a lil spring pressure.. or just folded tabs to hug it. it should not simply set against it.

now.. the end gor the dizzy cap may simple have folded brass ends that SLIP INTO the recesses inthe cap and touch the sourounding conduction surfaces... that's fine..e tc.

post back.
 
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EarlyBronco
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PostPosted: Wed Mar 06, 2013 12:10 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote


I think it's the wrong set, I picked it up in the "6 cylinder " tractor section but it says 4cyl for fords (tractor) on the box but there's 7 wires in the box (?) ill have to take it back and exchange em
 
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souNdguy
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PostPosted: Wed Mar 06, 2013 12:17 pm    Post subject: Re: 641 questions Reply to specific post Reply with quote

4cyl sets have 5 wires.

6 cyl sets have 7 wires.

ie.. 1 for each cyl PLUS a coil wire.

someone may have been trying to do a swaparoo and then had to set the box down..to get a more spendy 7 wire set vs a cheaper 5 wire set.
 
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