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Old 04-03-2012, 03:16 PM   #1
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Coach Batteries for 2008 Grand Star

I have a 2008 Grand Star on a Freightliner Chassis for which I'm the second owner. When I purchased the rig, there were two Type 24 12 volt batteries installed as coach batteries. However, both the data plate on the battery tray and the Newmar technical reps say I should be using two type GC2 6 volt batteries (same as on my previous Class C). My issue is that there are mounting bolts which hold the battery tray to the frame but they stick out about 7/8" and are located approximately 9 3/8" from the tray floor. Since the tray is only 7 1/4" deep, I can't get a two type GC2 batteries (U2200) in the tray without the fear of having the bolt punch a hole through the battery case. Can someone explain what I'm doing wrong or what they did to get past this bolt.
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Old 04-03-2012, 03:28 PM   #2
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I must be reading your measurements wrong as I can not find a battery that fits.
Is it possible to take the bolts out and turn them around?
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Old 04-03-2012, 03:45 PM   #3
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If it were not for the bolts, a GC2 would fit with a 1/16" to spare in the depth. But with position of the bottom two bolts, the battery height won't allow it to slide in. I've tried turning around the bolts, but no joy. I may try to replace them with stove pipe bots going the opposite direction, but am hesitant in case that don't hold up under the stress.
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Old 04-03-2012, 04:03 PM   #4
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I do not see a problem just use the high rating ones. They come in different grades
from soft to extra hard.
It you are still worried put a piece of metal in for the battery to bump against.
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Old 04-03-2012, 09:01 PM   #5
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Quote:
Originally Posted by aksawdust View Post
If it were not for the bolts, a GC2 would fit with a 1/16" to spare in the depth. But with position of the bottom two bolts, the battery height won't allow it to slide in.
Probably why they did not use the 6V batteries in the first place. If all the bolts do is hold up the battery cage I'd go with the carriage bolt suggestion. Amazon.com: Grade 8 Carriage Bolts is the result of a search on amazon for grade 8 carriage bolts, one of these should do the trick!
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