David Brown 995 won’t start

dkrobach

New User
I have a David Brown 995. The battery is fully charged and reads 12.45volts using a volt meter. When I turn the key all the indicator lights are working but when I try starting the tractor the lights go out and does not turn over. When I try this again right away non of the indicator lights come on. If I wait for a while (half an hour or so) the indicator lights will light up again but with the same results. Has anyone had this problem before?

Thanks, Dave
 
i hate to braek the news but your battery is only about 20% charged. You need it at 13.5 to 13.7 at full charge. Put battery on charger and see if it will take a charge

Brain fart. 12.45 v is close to 80% charge which shouldn't have a problem turning engine over. Full charge is actually 12.5 to 12.7v.
Likely poor connection(s) and/or corroded wires.
 
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Battery should be fully charged, but it should try to crank even if battery low. Since the lights all go out, I am thinking the starter is pulling too many amps.

Simple things first though, fresh battery and check and clean all connections. If a fresh battery and booster cables does the same thing, I'd look at starter.
 
I have a David Brown 995. The battery is fully charged and reads 12.45volts using a volt meter. When I turn the key all the indicator lights are working but when I try starting the tractor the lights go out and does not turn over. When I try this again right away non of the indicator lights come on. If I wait for a while (half an hour or so) the indicator lights will light up again but with the same results. Has anyone had this problem before?

Thanks, Dave
What does the battery read when trying to crank? If no drop, follow the cables and check voltage at every connection. While cranking a good battery should read 11+ volts in warm weather. It should read 12.4 or higher before cranking. That saves guess work. Mark.
 
i hate to braek the news but your battery is only about 20% charged. You need it at 13.5 to 13.7 at full charge. Put battery on charger and see if it will take a charge
I believe 12.6 is considered fully charged on a 12-volt automotive battery. 13.5 to 13.7 are fully charged numbers generally given for solar system storage batteries.

!2.45 should crank his engine, if it is getting to the starter and the starter is good.

Edit: Doing the voltage drop tests is a good first start, as Mark posted.
 
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I have a David Brown 995. The battery is fully charged and reads 12.45volts using a volt meter. When I turn the key all the indicator lights are working but when I try starting the tractor the lights go out and does not turn over. When I try this again right away non of the indicator lights come on. If I wait for a while (half an hour or so) the indicator lights will light up again but with the same results. Has anyone had this problem before?

Thanks, Dave
You have a wire corroded so bad that it has no voltage left if your lights are all going out. try to clean the battery terminals and see if that makes a difference. add a jumper cable to it from a vehicle and see what happens.
 
I have a David Brown 995. The battery is fully charged and reads 12.45volts using a volt meter. When I turn the key all the indicator lights are working but when I try starting the tractor the lights go out and does not turn over. When I try this again right away non of the indicator lights come on. If I wait for a while (half an hour or so) the indicator lights will light up again but with the same results. Has anyone had this problem before?

Thanks, Dave
 
Dave,
Check the ground cable where it bolts to the frame beside the battery. I have seen them make a bad connection. Also check the plugs back at the dash.
 
You have a wire corroded so bad that it has no voltage left if your lights are all going out. try to clean the battery terminals and see if that makes a difference. add a jumper cable to it from a vehicle and see what happens.
An easy way to test this is to hold your meter leads right on the actual posts of the battery when you try to crank the engine. If the voltage drops there that means your connections are good. Compare that reading to the reading you get on the terminal clamps. Should show you the same reading within reason if your connections are good. Of course if your voltage does not drop down as you are saying the light dim to nothing then you have to figure out when the bad connection is. You can do that by leaving one meter lead on the battery post and working down that same cable with the other lead checking at each point while loading the circuit(turning key to start) When you meter pop up near battery voltage you know you have found the point of the poor connection. I am fairly certain that your current problem is your battery by the sounds of it.
 
Thank you all for your replies. I will use this advise to see if I can find the problem and let you know what I find. Might be a few days. Thank you all again.
 
We well I think I got it going again. I took the battery to town and had them check it and it was good. All the connection to the battery looked good no corrosion. I did take the cover off the positive post that clamps down the battery cable and it was a bit corroded underneath. Cleaned it off real good with a wire brush and put it back together and it seems to have done the trick.
Thanks for all your help guys. I do appreciate it! Dave
 

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We well I think I got it going again. I took the battery to town and had them check it and it was good. All the connection to the battery looked good no corrosion. I did take the cover off the positive post that clamps down the battery cable and it was a bit corroded underneath. Cleaned it off real good with a wire brush and put it back together and it seems to have done the trick.
Thanks for all your help guys. I do appreciate it!
Now clean the ground cable !
 

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