Search For SkidSteer Related Info on The Web 


  We Accept Donations! 

If you enjoy what we have to offer or this site has helped you along the way, please consider a donation to help us defray the cost of development and hosting! Thanks



The safer, easier way to pay online!




  The SkidSteer Forum 

   
Forums Home   Search   Login   Register   Member List  

Bobcat  > General Repairs  > 1987 bobcat 843 Battery Drain.  
 
Display using:  
Previous Thread :: Next Thread 
 Author Thread: 1987 bobcat 843 Battery Drain.
jasonzman is not online. Last active: 4/27/2009 4:06:52 PM jasonzman
Joined: 25 Apr 2009
Total Posts: 3
 
1987 bobcat 843 Battery Drain.
Posted: 04/25/2009 02:44 PM
Hi im new to these forums and looking for help for my 1987 Bobcat 843. My machine runs great but the problem im having is something is draining the battery. I can take a fully charged battery and in less than 2 hours It will be completely drained, doesnt matter if im running the machine or its sitting in my shop ignition off and key out, if the battery is hooked up its drained, ive tried different batteries. The voltmeter indicates when its running its charging correctly but even with the alternator charging it the battery will drain over it. I assume I should start with the ignition switch but does anyone have any other ideas? I could handle about any problem but an electrical one =) Thanks for looking. -Jason
jerry is not online. Last active: 8/30/2014 9:49:49 AM jerry
Top 25 Poster
Joined: 03 May 2007
Total Posts: 1747
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/25/2009 06:05 PM
That is a pretty heavy short if it will drain the battery as it is being charged. Disconnect all + wires from the battery or starter wherever they are and find out which one is drawing the current when it is touched to the + cable again. If you dont see any current draw you may have a internal problem in the battery itself.

LX665,backhoe,snowplow,assorted homemade stuff Northeast Mn
vettes is not online. Last active: 7/26/2010 7:49:51 AM vettes
Joined: 16 Nov 2008
Total Posts: 17
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/25/2009 06:17 PM
Check the starter for the drain, thats about the only thing i can think could have that much of a drain.
jasonzman is not online. Last active: 4/27/2009 4:06:52 PM jasonzman
Joined: 25 Apr 2009
Total Posts: 3
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/25/2009 09:21 PM
Thanks for the replies, I know its not an internal problem with the battery because i have tried multiple batteries and the same thing happens. I will check the starter, It does not engage without using the key but i suppose it could have a short somewhere? Would it be wise for me to buy a new ignition switch 1st or is it something heavier than that? technically when the key is off it should terminate power to everything but the heavy wire that goes to the starter solenoid correct?
Tazza is not online. Last active: 8/26/2014 2:14:24 PM Tazza
Top 25 Poster
Forum Moderator
Joined: 08 Dec 2004
Total Posts: 11576
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/26/2009 01:03 AM
Try un-hooking the alternator B+ cable and see if that does anything, if you tap it back to the terminal, look for a spark, if it does its drawing power from a possible shorted diode. If its draining the battery that fast, it has to be putting out heat, feel around and see whats getting warm.

Bobcat 763 burntSadbut i'm working on it!, 04 S150 with air and a smooshed cab, S250 turbo.
vettes is not online. Last active: 7/26/2010 7:49:51 AM vettes
Joined: 16 Nov 2008
Total Posts: 17
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/26/2009 06:53 AM
The starter will drain a battery with or without ign on or off. Have had a few customers over the years with starters that are bad and do this. If your unsure about testing, almost any parts store will be able to do it for you! Andy
Skiddy is not online. Last active: 8/24/2009 3:47:39 PM Skiddy
Top 50 Poster
Joined: 14 Feb 2009
Total Posts: 162
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/26/2009 10:22 AM
I am totally with Taz on this check your alt. This is a scenario that causes fires. I would unhook your battery when not in use till you find the problem. If it is draining the batt that fast something is getting warm. should be easy to find.
skidsteer.ca is not online. Last active: 7/21/2014 8:31:40 PM skidsteer.ca
Top 25 Poster
Forum Moderator
Joined: 20 Jan 2006
Total Posts: 3847
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/27/2009 12:13 PM

Bad diode in the alternator. Unhook the wires and see if the draw goes away. If it has a mondo, swap it for a Delco, they bolt right up.

Ken


NH LS 160, S150, S185 Hoe Brusher Grapple Auger, Mixer Tiller Soil Conditioner Trencher Tracks Snow Blade Wood Splitter Stump Grinder Land Plane. Dealer Virnig Erskine Componets Plus Wallenstein Bauma Lite
mrfixitpaul is not online. Last active: 11/25/2012 4:08:16 PM mrfixitpaul
Top 25 Poster
Joined: 28 Mar 2009
Total Posts: 365
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/27/2009 03:12 PM
I'd also check to see if the solenoid for the glow plugs is stuck and keeping them on.
jasonzman is not online. Last active: 4/27/2009 4:06:52 PM jasonzman
Joined: 25 Apr 2009
Total Posts: 3
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/27/2009 04:06 PM
I cant seem to find anything hot to the touch on a fresh battery, I replaced the ignition switch and the problem still exists, I suppose the next step is to disconnect the starter and alternator one at a time to see if the draw is still there. where is the glow plug solenoid? I have the model with the isuzu diesel not perkins.
mrfixitpaul is not online. Last active: 11/25/2012 4:08:16 PM mrfixitpaul
Top 25 Poster
Joined: 28 Mar 2009
Total Posts: 365
 
Re: 1987 bobcat 843 Battery Drain.
Posted: 04/28/2009 04:18 AM
Usually behind the coolant overflow tank on the left side. there are 2 solenoids, 1 for starter and 1 for glowplugs
Previous Thread :: Next Thread 
Page 1 of 1
 
Forums  > Bobcat  > General Repairs  > 1987 bobcat 843 Battery Drain.  
   
(Copyright 2002-2010) Owens Consulting
*
Powered by E-SpiritLink    Terms Of Use    Privacy Statement
Portal engine source code is copyright © 2002-2014 by DotNetNuke. All Rights Reserved