My new Jinma

   / My new Jinma #121  
3RRL said:
I have another question about this engine.
What is this sensor for and what does it do? Is it the EGR or something?

QUOTE]

Hey Rob,
When we were chating the other day ........... I asked about Flame Start.

That is what that is. I like the idea !!

Put a test like on that solenoid and set if it lights up when the key is held in the glow plug position or while cranking. ??

Ronald
Ranch Hand Supply
 
   / My new Jinma #122  
Ronald,
I have that on my Kama 554.
On Loretta's Jinma, is it activated separate from the glow plugs somehow? Or simultaneous? When using the glowplugs there is no noticeable "poof" like my Kama makes, and my Kama doesn't have glowplugs. So the preheat for it is specifically for the manifold heater.
How would I tell on hers?
 
   / My new Jinma #123  
Rob, I am new on the flame start thing but feel I understand operation and all don't lite off the same.

I assume the wire going to the element in the intake which is a coil, which lights the fuel. The other soleniod connected in the fuel line has one wire going to one of the electrical spades and the other spade is bent over. I assume that soleniod valve turns the fuel on and off and don't see how it could work with one wire.

If it is not making a poof noise ..... it might not be poofing ?

It may have a controller that the other sensor is talking to the that tells the controller to turn on the fuel and heat the coil via temp ??

I may have to get one of those engines in a 254 on my next order and check them out. I like it.

Ronald
Ranch Hand Supply
 
   / My new Jinma #124  
3RRL said:
I have another question about this engine.
What is this sensor for and what does it do?
It's not a sensor, it's an intake manifold pre-heater.

//greg//
 
   / My new Jinma
  • Thread Starter
#125  
EddieWalker said:
Hi Loretta !!!!!!!

Somehow I missed this thread until just now. So even though I've seen your tractor in person, and can attest to how nice it is, Congratulations on your new tractor!!!! From what I was able to see on it, you have a very nice tractor that's going to be a wonderful workhorse for you.

Has Rob been able to get any more done on your grapple? I'm looking forward to reading the posts on it and seeing the improvements he makes in the disign over the one on his tractor.

Eddie

Hi Eddie! It was so great to meet you and your family!

Rob has the grapples almost done. I think he just has to make the pins for it, and that's all. We'll take them up next time. I just have to get used to all these new valves on it!
 
   / My new Jinma #126  
Ranch_Hand_Supp said:
3RRL said:
I have another question about this engine.
What is this sensor for and what does it do? Is it the EGR or something?

QUOTE]

Hey Rob,
When we were chating the other day ........... I asked about Flame Start.

That is what that is. I like the idea !!

Put a test like on that solenoid and set if it lights up when the key is held in the glow plug position or while cranking. ??

Ronald
Ranch Hand Supply

The "flame starts" I have seen all had only one wire. apparently the fuel valve is also controlled by the heating element, probably using different metals with different expansion rates.... clever device however it works!
 
   / My new Jinma #127  
The Thermo-Start system that pre-heated my Yanmar was silent, I wouldn't be terribly concerned if yours turns out to be "poofless". The 1st photo clearly shows a red wire feeding a presumed switchable 12v to the heating element, and a silver-colored fuel supply line feeding the heater. By itself, the photo suggests a one-wire gravity fed system, typically supplied by the fuel return loop.

But that 2nd photo now generates some questions of my own. At first glance, I thought that brass-colored thing was your EGR valve, which - if true - would have no relationship to the manifold heater.
-Does the other end of the silver fuel feed actually connect to that brass colored thing? -
-Where is the other end of the blue wire that is connected to the brass colored thing?-
-Is that black plastic line going into the brass colored thing carrying fuel?-
-If so, from where?-

//greg//
 
   / My new Jinma #128  
All good questions and I can't answer where those wires or tubes go.
I'll have to take more photos next visit up and really find out where all the connections go. It will be interesting for others who have this engine to know.

On the other hand, I have one of those manifold preheaters on my Kama 554.
However, it does not have glow plugs. so when you you turn the key counter clockwise you activate that manifold preheater. It works and I can definitely hear it. It also shows a draw down on the amp meter in the preheat ignition position.

On the Jinma, it has glow plugs and when you turn the key to the preheat it warms them up.
Now that I think about it, that Jinma came WITHOUT the glow plugs hooked up, you remember? We had to add a wire and fuse for them as shown in a previous post.
I wonder if the preheat on the switch was for that manifold preheater then? I don't think so...
If it was, it didn't work very good at all because I remember there was no draw down on the amp meter in the pre heat position plus the tractor wouldn't start!
It fire right up after we hooked up the glow plugs and preheated that way.
 
   / My new Jinma #129  
3RRL said:
I wonder if the preheat on the switch was for that manifold preheater then? I don't think so...
If it was, it didn't work very good at all because I remember there was no draw down on the amp meter in the pre heat position plus the tractor wouldn't start!
It fire right up after we hooked up the glow plugs and preheated that way.
Sorry, haven't followed all 13 pages of this thread all that closely. So I don't remember the inop glow plug circuit. But now that you mention it, perhaps in activating that circuit, you killed the other one.

The manifold heaters don't pull anywhere near the amount of current that glow plugs do. Their rough equivalent would be a cigarette lighter in a car. No visual indication of current draw on the ammeter should be confirmed with a voltmeter between the red manifold heater wire and ground. If there is in fact 12v there when energized by the switch, you should probably consider a fuel delivery problem.

//greg//
 
   / My new Jinma #130  
Loretta's 284 is really coming together with all the work she's been doing on it. I thought you might like see some of the new hydraulic valves she's been working on such as what you saw in her grapple thread and the replacement FEL valve thread the new valves she got. Here they are all together. First the new FEL valve with new Scorpion joystick handle and also the electric solenoid grapple valves.



We also added a pressure relief valve right after the pump along with a pressure gauge and return to sump line. Right now with the loader on, the FEL valve is next in line. If the loader is removed, there are QC's to hook up to the remaining valves on the tractor. Notice my favorite "T" shirt?



 
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