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Hd11 outer bearings

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7060 View Drop Down
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Joined: 16 Sep 2009
Location: Missouri
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 7060 Quote  Post ReplyReply Direct Link To This Post Topic: Hd11 outer bearings
    Posted: 23 Nov 2019 at 12:19pm
I am doing some maintenance on my hd11E and decided to change the final drive oil. I wanted to pull the caps off the outer bearings and wondered how to check the preload?
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Lazyts View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lazyts Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2019 at 8:51am
The preload is measured by rolling torque with the truck frames and seals removed.  The best you could do short of that would be to pull a couple of shims.
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DMiller View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DMiller Quote  Post ReplyReply Direct Link To This Post Posted: 28 Nov 2019 at 12:43pm
THIN Shims as you do not want to cook those.
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Tad Wicks View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tad Wicks Quote  Post ReplyReply Direct Link To This Post Posted: 22 Dec 2019 at 2:55pm
What you might do, is remove all the shims and then put the cap back on, torque to 15-20 inch pounds, use a feeler gauge around the shim area and average the gap then match that gap with the shims and add about .015 inch then torque to 35-40 foot pounds. Remember to tight is worse than to loose. Just my thoughts.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LeonR2013 Quote  Post ReplyReply Direct Link To This Post Posted: 22 Dec 2019 at 9:35pm
After you set the preload see if you can shake them at all. If a little loose, tighten them a tad and check again. If no shake and turns free, buckle her up. Run it a while then get your lazy butt off the machine and see if they're getting warm or hot. Recheck. (Requires getting off again. You get the procedure.)    Leon
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