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Unread 06-14-2015, 11:42 AM   #1
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Default stainless steel washers

i got 2 sets of Trojans this weekend for carts .. both came with a bag of stainless steel nuts AND stainless lock washers .. guy said each battery set (6) is shipped from Trojan with a nut and lock washer set

ok my question is ... i was told that no washers were to be put on batteries

should i put the lock washers on ?
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Unread 06-14-2015, 11:53 AM   #2
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Default Re: stainless steel washers

I would not torque to 110 inch lbs.
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Unread 06-14-2015, 11:54 AM   #3
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Default Re: stainless steel washers

I have tried with and without, back to back, I observed no change in current flow or temperature of the connections. I used the Alltrax data logging for current measurements and an infrared thermometer for temperature.

I would say anything that doesn't impede the current flow and prevents the nuts from coming loose is a good thing.
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Unread 06-14-2015, 11:55 AM   #4
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Default Re: stainless steel washers

CTD, it's not uncommon to use lock washers in marine battery applications,
so I see no reason not to use them on golf carts. Muddog
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Unread 06-14-2015, 11:57 AM   #5
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Default Re: stainless steel washers

All of the SW202 contactors I have purchased have lock washers on them, so it can't be that bad.
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Unread 06-14-2015, 12:11 PM   #6
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Smile Re: stainless steel washers

The key to using lock washers is the correct amount of tightness to compress the lock-washer flat and secure. Because of the design of the battery post on a golf cart battery this can be accomplished using the "inch" pound spec given...however...most of us do not have an inch pound torque wrench so that becomes an issue.
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Unread 06-14-2015, 12:28 PM   #7
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Default Re: stainless steel washers

Food for thought on Battery Terminal cables, nuts to use and torque settings in regards to Trojan Batteries. Note that they do not recommend any washers including lock washers, just standard hex nuts or half thickness lock nuts if in high vibration applications.

http://www.trojanbattery.com/pdf/WP_...Guide_0512.pdf

Last edited by scubabud; 06-14-2015 at 03:08 PM.. Reason: correct URL link
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Unread 06-14-2015, 02:00 PM   #8
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Default Re: stainless steel washers

Quote:
Originally Posted by trojan web site
This is somewhat embarrassing, isnít it?
http://www.trojanbattery.com/pdf/WP_...Guide_0512.pdf
It seems we canít find what youíre looking for. Perhaps searching can help.
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Unread 06-14-2015, 02:06 PM   #9
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Default Re: stainless steel washers

found it

Quote:
Use two half-thickness lock nuts instead of the standard hex-nut for added
security in applications where high shock or vibration may be encountered.
Do not use a washer or anything that may interfere with the metal-to-metal
contact between the battery terminal post and the cable connector.
Check all connections periodically to make certain that they are and remain
tight. Re-torque if necessary.
does not say no lock washer just nothing between cable and post

that was published in 2012 .. wonder why they ship batteries with lock washers if they are not entented to be used ??
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Unread 06-14-2015, 02:38 PM   #10
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Default Re: stainless steel washers

If you are using the stainless bolts/nuts make sure that you put some anti-sieze on them. They will gall and get locked up just looking at them.
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