Don Jordan Posted March 1, 2008 Report Posted March 1, 2008 While this should be an easy fix I'm sure it won't come in for less than $1000... If I come up to a stop sign, down shift from 3 to 2 let my foot off the clutch and it pops out of gear. It also does it in 1st and 3rd when coasting. Are the gears worn out, will getting the trans rebuilt help, is it something else? Everything else works fine. btw: 47 P15 stock Quote
Normspeed Posted March 1, 2008 Report Posted March 1, 2008 Don, I was looking in my manual and it says slipping out of gear can be due to linkage misalignment, excessive clearances (wear), or the most common cause: restricted travel of the shifter linkage. If you have the 1946-54 Plymouth service manual, there's a section about this on page 224. If you suspect it will need a rebuild, you might keep an eye out for a used 3 speed that you can swap in during the rebuild. Might turn out to be so much better that you'll keep it in there. They can be had cheap if you search around. Quote
claybill Posted March 2, 2008 Report Posted March 2, 2008 hey you can get one at a salvage yard for less than 100 bucks!! there are lots of them around in our garages too.!! bill Quote
Jim Yergin Posted March 3, 2008 Report Posted March 3, 2008 Can some one explain the "fast second gear" that has been mentioned regarding George Asche's O/D units? My limited understanding is that the second gear ratio on the earlier transmissions is different than the later transmissions. Is that correct? What has to be changed to install that different second gear in the later O/D transmissions? Thanks. Jim Yergin Quote
Plymouthy Adams Posted March 3, 2008 Report Posted March 3, 2008 standard transmission on the 39-41 model..slighly better second gear ratio..remember..you need the cluster gear and the second gear.. Quote
Plymouthy Adams Posted March 3, 2008 Report Posted March 3, 2008 here is the ratio... going by the Plymouth book for the three speed... 2.57 first 1.83 second 1.00 third fast second is 1.55 Quote
grey beard Posted March 3, 2008 Report Posted March 3, 2008 Don, Believe if it were my vehicle, I'd try to arrange a road test where all the linkage is disconnected from the transmission and then drive it through acceleration and deceleration. As stated earlier in this thread, if anything in the linkage stackup is keeping the shift forks inside your transmission from going completely into gear, this can be the cause the dileemma you notice. The trick will be to find a spot on your road test where you can stop in a lot or on a shoulder somewhere that allows you to crawl underneath and change gears, so you can try this test in each gear that exhibits the problem. Then you will know for a certanty the root cause of the dilemma. If the problem still exists with the linkage disconnected, then it's time to swap/rebuild the box. JMHO Quote
Young Ed Posted March 3, 2008 Report Posted March 3, 2008 Why crawl under? Just remove the floor piece and shift on the fly Quote
Jim Yergin Posted March 3, 2008 Report Posted March 3, 2008 Tim, Thanks for the information. I have a spare 1941 transmission so I may look into using the second speed gear and the gear cluster in my O/D. Jim Yergin Quote
Plymouthy Adams Posted March 3, 2008 Report Posted March 3, 2008 you be very happy with that arrangement if you can make it go...ask Lou Earle..he has one and it is sweet... Quote
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