No spark

[Hobo,NC]

(quoted from post at 03:10:17 07/14/23)

(quoted from post at 16:35:12 07/13/23) Well, that will sure result in no spark!

Hopefully, it's just the timing gear. Pul the governor off and look in there to see.

Post back w/ results, pls.

And see tip # 1
75 Tips

ruce, if it is a press-on gear, as in my picture from 1941, it is still available (on YT) and does cam have to be removed to remove gear and press on another?

This post was edited by JMOR on 07/13/2023 at 02:21 pm.

I never replaced a press on cam gear on a N but have a many a time on other makes. I do not remove the cam. I break off the fiber gear then fracture the cam gear hub to remove it. I have at times ground the hub thin to facture it. If you grind into the cam no harm no foul.

All those cams had a center dimple on the end of the cam, I drilled the cam tapped it installed a stud to draw the cam on. All those cams were like drilling butter EZ as pie.

All those cams were keyed nuttin to it.

 

[Caroline Chamblin]

Isn't there a cam with a bolt on gear that can
be substituted? I think pressing on things
requires certain machine shop equipment
according to posts by Dell(God rest his soul)

 

[Caroline Chamblin]

Thanks Hobo
I need to do me some studying, I bought that
other 9n today so im not held up anymore this
summer with mowing.

 

[Caroline Chamblin]

Yes I will.i went ahead today with buying the 9N i mentioned earlier. I won't be taking it apart for a couple days. I will take photos

 

[Hobo,NC]

I like the idea of a new tractor.

 

[Caroline Chamblin]

New to me anyway. The brand new JD was
payments for 84 months. Ouch. If I have to I
will, this one first though , bought today.
Ad said I have receipts amounting to $3500
for new parts put in this old boy.
Start at new front axle pin and bushing to
rear up graded PTO shaft and bearing. Engine
overhaul, head milled, call Smokey to have a
chat about the rest that went in the tractor.
Theres only about 50 hours on the
work done.
Has a Sherman aux tranny.

 

[Caroline Chamblin]

JMOR here is a photo of the block. Any chance
the B stamp means it's the camshaft with the
bolt on gear?
Part number 2NC-6250-B Camshaft

 

[JMOR]

(quoted from post at 03:09:08 07/14/23) JMOR here is a photo of the block. Any chance
the B stamp means it's the camshaft with the
bolt on gear?
Part number 2NC-6250-B Camshaft


<img src=https://www.yesterdaystractors.com/cvphotos/cvphoto158500.jpg>

do not know. Sorry.

Further look at old parts books leads me to believe that such "B" marking 'may' mean that it is a bolt on cam/cam gear. Still can not be certain, however.

This post was edited by JMOR on 07/14/2023 at 10:51 am.

 

[Hobo,NC]

One thing to take away from this experience is to listen to the engine crank over, it does not matter what engine it is. Most any mechanical issue that has to do with compression will change the rhythm of the sound.

At 3:40 in this video he has all the spark plugs out with a compression tester in one cylinder listen to the rhythm. You can tell it has multiple dead holes by the sound. If it came into the shop sounding like this a light bulb would go off it has a mechanical issue.



https://carssimplified.com/engine-cranking-sound-diagnosis.php

https://www.youtube.com/watch?v=TTjS-DW1oOk



Learn how your engine sounds while cranking while its in good health so when it does start talking to you you will get the message. It will go as far as to send a message the battery is going south. A weaker battery leads to slower cranking and hence a change in duration.

This post was edited by Hobo,NC on 07/14/2023 at 04:36 am.

 

[lastcowboy32]

As I read the last few comments, which are all wise, I'm not sure if the subject is N tractors or the bodies of us old people that use them and work on them.

We and the tractors are getting to the same portion of the bathtub curve.

https://en.wikipedia.org/wiki/Waloddi_Weibull

https://en.wikipedia.org/wiki/Weibull_distribution

 

[HFJ]

enjoy the new N. hopefully, the other will be a smooth fix.

as much as i'd love something new and slick, i am allergic to payments.

This post was edited by HFJ on 07/14/2023 at 08:03 am.

 

[JMOR]

(quoted from post at 11:01:45 07/14/23) enjoy the new N. hopefully, the other will be a smooth fix.

as much as i'd love something new and slick, i am allergic to payments.

This post was edited by HFJ on 07/14/2023 at 08:03 am.

on't make payments! Just pay cash!

 

[HFJ]

(quoted from post at 12:20:37 07/14/23)

(quoted from post at 11:01:45 07/14/23) enjoy the new N. hopefully, the other will be a smooth fix.

as much as i'd love something new and slick, i am allergic to payments.

This post was edited by HFJ on 07/14/2023 at 08:03 am.

on't make payments! Just pay cash!

that's exactly what i do. but at this point, i can't justify spending that kind of money for what would be, for me, little more than a shiny new mower. as long as my N's distributor shaft continues to turn...

now, if i were to wake up one day to find that all my floodplain had risen a few feet, my position on this would change abruptly

 

[Caroline Chamblin]

Very good advice. I was proud of my daughter
when she called and said I took my car in
because the engine sounded different and she
needed a couple new ignition coils. At least I
have passed on some valuable knowledge to her.

 

[Caroline Chamblin]

Land rich , cash poor. Haha. Bought another N
instead.

 

[Hobo,NC]

(quoted from post at 00:53:24 07/15/23) Very good advice. I was proud of my daughter
when she called and said I took my car in
because the engine sounded different and she
needed a couple new ignition coils. At least I
have passed on some valuable knowledge to her.

None of this explains why you could not make spark on the bench?

 

[Caroline Chamblin]

I got spark on the bench with coil test I
posted that on the thread.