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Jd 318 Problem


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#1 VintageIronCollector OFFLINE  

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Posted January 22, 2014 - 09:10 PM

The starter turns but the engine doesn't crank. What could be the problem? Any easy way to fix this?



#2 lyall OFFLINE  

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Posted January 22, 2014 - 09:20 PM

is the starter turning over the motor?

if it is not check the stater benix 

it might needs to be cleaned and lubed or replaced


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#3 VintageIronCollector OFFLINE  

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Posted January 22, 2014 - 09:24 PM

The starter isn't turning the motor. What is the starter benix?


Edited by Tommy Williamson, January 22, 2014 - 09:24 PM.


#4 superaben OFFLINE  

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Posted January 22, 2014 - 09:24 PM

Two problems, assuming you have a gear type starter. 

 

The gear is broken and missing.  Happens rarely. 

 

The "bendix" starter drive is stuck, and in most cases, most likely the drive is stuck.  Essentially, what you have on these starters is a gear that spins forward on a gentle screw like shaft as the starter turns faster than the gear can catch up.  That gear slams into the flywheel ring gear and turns the engine. 

 

If the gear is stuck, then you can use graphite lube (not oil or grease) on the shaft.  If it continues to stick, don't frustrate yourself.  Buy a new one.  The simplest fix is to buy a new one. 

 

If your engine backfired as you are trying to spin it, it can chuck that gear back along the starter shaft and stick it firmly at the bottom.  I even had one that was thrown all the way down and split the gear at the bottom.  If it does that too many times, the bendix drive should be replaced.

 

Ben W.


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#5 superaben OFFLINE  

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Posted January 22, 2014 - 09:25 PM

What is the starter benix?

 

The bendix is the screw type drive for the starter that throws the starter gear into the flywheel gear.  Bendix was a company back in the day who invented that style of starter. 

 

Ben W.


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#6 VintageIronCollector OFFLINE  

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Posted January 22, 2014 - 09:27 PM

It is the stock starter set-up. Where is the starter located? I believe it's located on the lower left side. Am I correct?


Edited by Tommy Williamson, January 22, 2014 - 09:30 PM.


#7 superaben OFFLINE  

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Posted January 22, 2014 - 10:02 PM

It is the stock starter set-up. Where is the starter located? I believe it's located on the lower left side. Am I correct?

 

I don't know.  It should be easy to spot.  Follow your positive batter cable to the solenoid then from the solenoid down through the other thick cable and it will lead you right to it.

 

Did the 318 have an Onan?

 

Ben W.



#8 bhts OFFLINE  

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Posted January 22, 2014 - 10:47 PM

It is the stock starter set-up. Where is the starter located? I believe it's located on the lower left side. Am I correct?

 

You are correct lower left side and a pain to get to. You will have to pull the motor to get to it.



#9 bhts OFFLINE  

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Posted January 22, 2014 - 10:50 PM

 

 

Did the 318 have an Onan?

 

Ben W.

 

Yea Ben the 318 has a onan. The early ones had bf style and the later ones was a p series.


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#10 lyall OFFLINE  

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Posted January 23, 2014 - 12:28 AM

Tommy

if you do not have manual for the engine look in the manual section under engine 

you can download a manual

it will help you with the engine and the starter



#11 Alc OFFLINE  

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Posted January 23, 2014 - 06:35 AM

I read your thread yesterday and didn't have anything to add that wasn't already said but I just thought of a time my 318 's starter did something like yours , spun but didn't engage, I was in the prosses of removing it and found the bolt on the head for ground cable was tight but corroded underneath , cleaned the cable and the starter worked fine , Why it didn't engage ?  Maybe too low of voltage ? Just enough to spin , idk but was happy not to need replacing


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#12 jd.rasentrac OFFLINE  

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Posted January 23, 2014 - 06:39 AM

or try this: jdpc, there are two different starters



#13 superaben OFFLINE  

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Posted January 23, 2014 - 07:27 AM

Maybe too low of voltage ? Just enough to spin , idk but was happy not to need replacing

 

And that can happen too.  Good point.  A starter has to have speed to throw that gear up the bendix. 

 

Ben W.



#14 ol' stonebreaker OFFLINE  

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Posted January 23, 2014 - 10:27 AM

  Just throwin' this out. Is the batt polarity correct?

                                               Mike



#15 VintageIronCollector OFFLINE  

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Posted January 23, 2014 - 12:01 PM

The tractor started fine the other week. Had to jump it with an f150, when the jumper cables were taken off the truck idled higher.






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