WD 45 won't stay in 4th
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=11859
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Topic: WD 45 won't stay in 4th
Posted By: Kevin NE
Subject: WD 45 won't stay in 4th
Date Posted: 03 May 2010 at 7:02am
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Bought a 45 on a sale last winter. Guy said it jumps out of 4th gear, but it won't stay in at all. Have to hold it in all the time, load or no load. Haven't had the cover off the transmission yet. Any thoughts? Fork or gear? Thanks!
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Replies:
Posted By: CTuckerNWIL
Date Posted: 03 May 2010 at 7:46am
First off, every time you use 4th and it pops out you can only make it worse. You could pull the shifter and see if the bottom end is wore out, but more than likely it is the shift collar and the splines on the gear are rounded off too much. If you have slop fore and aft in the trans gears you will need to address that. I'll bet you have to disassemble the rear end to fix it. Drain the tranny and rear end, remove back wheels and final drives, pull back cover of, remove shift tower, remove ring gear and pull the pinion shaft out catching all gears and collars as it comes apart. If you freeze the pinion shaft before reassembly, and you work fast, you can get the tranny back together fast enough to push the pinion into the rear bearing.
Good luck,a repair manual will almost be a necessity.
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Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
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Posted By: Don(MO)
Date Posted: 03 May 2010 at 9:22am
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Charlie is spot on, You need to get the top off and look inside before we can help more.
Don
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3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep.
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