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#24196 08/15/2004 3:13 PM | Joined: Aug 2004 Posts: 36 Apprentice | | Apprentice Joined: Aug 2004 Posts: 36 | I resently had my three speed trans overhauled, however my truck a 1953 chevy half ton is jumping out of third gear. the truck can be going slow or fast. The forks have been replaced along with the slider gear and cluster gear. The shift arms have been ajusted and new rubber bushings install, what could be the problem? | | |
#24197 08/15/2004 3:28 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The problem could be in the cover. The spring behind the detent may be broke or weak. I have stretched them out before. Check the grooves for wear also. If it,s been o-hauled I take it the bearings are good. 
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#24198 08/15/2004 6:42 PM | Joined: Aug 2004 Posts: 36 Apprentice | | Apprentice Joined: Aug 2004 Posts: 36 | Removed the cover and thre are marks thee between the detents however they are minor, moved the levers and there is resistants, the springs seem to pop into place however what wouldI be lookng for, should I have no marks in the plate cover? Is there any other reason the it would po outof third? | | |
#24199 08/15/2004 9:25 PM | Joined: Feb 2001 Posts: 1,096 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,096 | The problem could be in the pilot bearing , or the needle rollers or the rear thrust , or a combination of them all . | | |
#24200 08/17/2004 5:04 AM | | Anonymous Unregistered | | Anonymous Unregistered | Classic symptoms of fried syncros in the trans.
Time for a trans. rebuild. | | |
#24201 08/17/2004 5:04 PM | Joined: Jan 2000 Posts: 734 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 734 | I really believe the jumping out of 3rd gear is caused by a combination of things moreso than by one particular problem.
In rebuilding my 3 spd, I was able to find some new gears to install, but also had to try alot of "good" used parts before it was right. Good detents and forks help, but if the inner shaft doesn't mate up perfectly inside the drum gear, it still seemed to jump out. Lots of slop in the bearings and gears ain't good either. The whole thing needs to be as tight as possible.
Matthew 6:33 1952 Chevy 1/2-ton 3100 Late '55 235/SM420/torque tube 3.55 Dalton Highway survivor (using original 216) www.truckwithaheart.com | | |
#24202 08/17/2004 6:38 PM | Joined: Jul 2000 Posts: 962 Shop Shark | | Shop Shark Joined: Jul 2000 Posts: 962 | If the column linkage isnt adjusted correctly, the trans wont go completely into 3rd. Make sure the shift arms are correct on the splined shift forks shaft, the shift rods are adjusted properly, and the shifter box and shift bushings on column aren't worn out. and thats no bull shift 
Preaching the Hot Rod Gospel according to the 4-stroke apostles:
Suck, Squish, Fire and Fumes
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