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Harry Ferguson Tractors Discussion Forum
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Why a flanged bearing AND bronze thrust washer?

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Darren in TN

11-01-2005 13:14:51




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Howdy, folks.
I'm a bit confused on the Z-129 internals. Why does it have a flanged front main bearing AND a bronze thrust washer backed with shims to set crank thrust? Why isn't just one or the other sufficient?

Darren




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Little Dave

11-01-2005 13:55:05




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 Re: Why a flanged bearing AND bronze thrust washer in reply to Darren in TN, 11-01-2005 13:14:51  
Darren the Z-129 engine orginal thrust was a brass washer on each side of the number one main bearing and the one to the front was pinned to the block.The Z-120 (TO-20) engine did have a flanged number one main and the brass washer on the front.My crankshaft(Z-129)was worn so bad with the brass washer inside that I had the crankshaft welded and reground to standard size.I did go back together with a flanged number one main and the pinned brass washer on the front.Then you need to shim the thrust clearence with all the parts on the front of the crankshaft with the pulley and crank bolt in place and tight should be .003"-.007" endplay. Dave

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