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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #101  
Old 06-26-2013
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giderich giderich is offline
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Sounds like reversed polarity or other problem with the charger hookup.

Jumping the coach with a dead battery bank is asking for trouble.

Ask a heavy truck mechanic or Mobile Diesel Tech for a helping hand to get the batteries charged. The 3208 CAT starts easily with fully charged batteries. The diesel has to SPIN big time...no glow plugs and starts on compression alone.
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  #102  
Old 06-26-2013
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The wiring on the battery bank could use some help.

Difficult to see if there is an error from the pics. New cables and a new ground strap may help.
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  #103  
Old 06-26-2013
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Looks to me like that is your house battery bank, do you also have a 12V start system on an FC, or does an FC start with the house batteries?
I have only minimal experience with 6V to 12V systems, but in our our old Kenworth's they had a series parallel switch to convert to 12 start and that is a whole other can of worms.
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  #104  
Old 06-26-2013
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what was wrong with the old batteries?
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  #105  
Old 06-26-2013
kroosmd kroosmd is offline
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They would not take a charge so I had them load tested and 3 out of 4 failed so I replaced all four.
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  #106  
Old 06-27-2013
bubblerboy64 bubblerboy64 is offline
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You need to be careful with the new batteries not to over charge and be certain they are wired correctly. This requires some know how if you are not absolutely certain don't take this on. I don't trust myself and have back up so that the money is not lost . The batteries may have been the only problem from the get go but you need to be entirely certain of that. Proceed with caution
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  #107  
Old 06-27-2013
Friday1 Friday1 is offline
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THe clamp type battery terminals on your cables are not real good for use on a diesel. Small diameter cables like on an auto are not real good either. Solder on terminals are the way to go. If you get your coach started, put thos two items on your to do list. The clamp on termiinals don't pass the amps you need to start a diesel as well as soldered terminals.
As someone else said, the 3208 CAT is a quick and easy motor to start...provided it has all the systems working properly. With any diesel, cranking speed is everything. Anything that is not up to the job like clamp on terminals, small diameter cables will not work well.
Your four batteries are wired like two seperate 12 volt batteries. Can't see from the pics if that is the case. + to - on one pair of 6 volt. + to - on the other set. Think of it as two 12 volt batteries. Hope this helps. You will get it. Don't get too frustrated. WOG will get you goiing.

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  #108  
Old 06-27-2013
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Quote:
Originally Posted by JD33 View Post
Looks to me like that is your house battery bank, do you also have a 12V start system on an FC, or does an FC start with the house batteries?
Quote:
Originally Posted by JD33 View Post
I have only minimal experience with 6V to 12V systems, but in our our old Kenworth's they had a series parallel switch to convert to 12 start and that is a whole other can of worms.
Yes, the FC battery bank is house and start.

Very difficult to check the routing of those wires in the picture. Here is a post from another thread that contains a picture and a diagram of the FC battery bank setup. Hope it helps.
http://www.wanderlodgeownersgroup.co...95&postcount=4




Thanks John
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Last edited by Buckeye Bird; 06-27-2013 at 07:24 PM. Reason: Added pictures to message
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  #109  
Old 06-27-2013
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Combination of fuel and electrical problems, such as you have, can just about drive you to drink. Been there, done that, got the T-shirt and used it for a grease rag.
My 3208 was hard to start, jumped it with my pickup many times, then after getting a new battery for my generator, used the Aux. Bat. switch to jump it.
After I got the fuel problem, old dried out fuel line sucking air, and new batteries and cables the Cat 3208 is running before it makes a full revolution on the starter.
Before I figured out and fixed the bad fuel line the hand pump under the dog(cat)house lid was my best friend.
YMMV
Dave
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  #110  
Old 06-27-2013
kroosmd kroosmd is offline
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My set up is different. It is set up as two seperate groups of two batteries per group. One group goes to the starter and the other is the 12v on board system. This is my understanding of it.

The pictured set up appears to be one group of four batteries that connects at one point for the postive and negative to two sets of cables? the two sets of cables being the starter and the on board house 12v system?

This set up seems like it would be better for start up and running the on-board 12v system because you are getting a bunch more amps, especially if my batteries are undersized as has been pointed out in the thread.

Is my understanding correct?
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