CA popping out of 2nd gear

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   OK - just picked up a 51 CA Thompson High Crop. s/n CA7272. Not running yet, but supposedly had problem popping out of second gear - reason it was parked. What am I looking at as most likely cause / repair? best, Ed

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ACEd2010 Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 23 Oct 2010 Location: Bogalusa, La Points: 84	Post Options Post Reply Quote ACEd2010 Report Post Thanks(0) Quote Reply Topic: CA popping out of 2nd gear Posted: 28 Apr 2012 at 4:02pm
	OK - just picked up a 51 CA Thompson High Crop. s/n CA7272. Not running yet, but supposedly had problem popping out of second gear - reason it was parked. What am I looking at as most likely cause / repair? best, Ed

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Bill Long Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Bel Air, MD Points: 4556	Post Options Post Reply Quote Bill Long Report Post Thanks(0) Quote Reply Posted: 28 Apr 2012 at 6:27pm
	It is unusual for a CA to pop out of Second Gear. Usually it is third. The usual cause of this is the lugs are rounded on your shifter gear in the transmission. Sometimes you can fix it with gear shift forks but usually it is the costly gear and shifter replacement in the transmission. Usually comes from shifting on the go. Grinds the ears on the gears. Remember, the CA has a constant mesh helical gear transmission. That means that you do not shift gears only shifter collars that mesh with lugs on the various gears. Hope it is not all that bad. Good Luck! Bill Long ps: CA is a NEAT tractor - yours is a High Clearance CA. Cool!

B26240 Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 21 Nov 2009 Location: mn Points: 3866	Post Options Post Reply Quote B26240 Report Post Thanks(0) Quote Reply Posted: 28 Apr 2012 at 7:25pm
	Good ol Bill is right on !!

CTuckerNWIL Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 11 Sep 2009 Location: NW Illinois Points: 22825	Post Options Post Reply Quote CTuckerNWIL Report Post Thanks(0) Quote Reply Posted: 28 Apr 2012 at 7:32pm
	While you have it apart, make sure the thrust washers contain the end play in the gear stack and make sure your shifter is up to par. Any added slop or end play can assist in hurrying the popping out process again, but it is usually caused by grinding gears.
	http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Bill Long Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 12 Sep 2009 Location: Bel Air, MD Points: 4556	Post Options Post Reply Quote Bill Long Report Post Thanks(0) Quote Reply Posted: 28 Apr 2012 at 10:25pm
	We used to have various size snap rings that took up the end play in the gear train. They were measured in thousands of an inch. When it first occurred we used them with some success cause it was a lot less costly than dissembling the transmission. However, you are looking at a tractor that is pushing 60 years old. I hate to mention the expensive job but if you are going in replace the gears. Perhaps you can find a used CA transmission or gears. Check e-bay. They have the damnedest things at a relatively good price. Good Luck! Bill Long