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Jeep Wrangler YJ
YJ General Discussion
AX-15 transmission popping out of gear
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<blockquote data-quote="deadpool1" data-source="post: 440878" data-attributes="member: 21229"><p>great news, the 1s test free of cost, proves what is NOT.</p><p>the boot is bad. the most cheap fix on earth, why not get a new one, mine is super soft thin rubber. not 30 year old hard old rubber.</p><p>the causes are in order of PAIN (labor ) and part cost are: I presume the tranny is not bouncing up and down too. right in motion?</p><p>great no body to frame jackups, so we can end that panic. (just springs) </p><p>The rear ujoint will not like 4 + inches of lift, that makes it vibrate like mad, (U-joint 101 rules study it) and a very short life span listed at Makers web site for SPICER. the rear prop shaft is super short.</p><p></p><p>1: a new boot.</p><p>2: 2nd cause ( shift lever and be actually too sensitive, (as in bad shift rails detents, or OMG they are missing parts by PO silly actions )</p><p>3: any manual transmission can jump out of gear to neutral if the box has (#2 above ) or bad bearings or forks melted to death even warped forks or the syncro ring is a total wreck most of this are from GL4 way way too low and looks like TAR drained, or using ATV in the 5sp box (never)</p><p>4: the tranny is bouncing like mad and or the rear pinon angles are way way wrong.</p><p></p><p>to learn what it is we discount what we know it is not. (SPOCK or<strong> Occam's razor</strong>) 2 classic answers, it's the simple one bad or , we tested all 10 possibles</p><p>and 9 pass the test so must be #10 a fully bad transmission or missing detent balls)</p><p></p><p>we can't see the tranny bounce here.</p><p>some boots are no good even new, from 12,000 miles away made from recycled , flip-plops or worse.</p><p>maybe crown parts and cross the fingers.?</p><p></p><p>when bearings in the box fail the gears jump around 360deg left and right and it will jump out of gear. </p><p>the shiftrails most do there job or it will jump out of gear. for sure with 5 lb custom shift lever ball put here, (I used Beer stine lever as dumb kit)</p><p>the dent balls not missing or there springs broken or missing</p><p>the gear yoke/forks, not bent or warped or galled or melted (the look funny colors they ) are are bad.</p><p>syncro's not cracked or wrecked.</p><p>gears have dogs , those too can wreck. we shift dogs not gears. see? and 4th gear is not a gear it is 1:1 ratio, main shaft lockup. so does it jump gear?</p><p>and the bearings.</p><p>ive rebuilt a few,with full rebuild kits and know what to look for inside, (and measure).</p><p>Overheat damage and bearings shot are easy to spot.</p><p></p><p>so do the rear mount first. if no handy new boots found.</p><p>sure.</p><p>and GOOD LUCK!!!, never seen a used car sold this old that did not have 10 more more super bad things wrong, missing or warn out.</p><p>Or done wrong, many lift kits are done wrong. (springs just thrown on)</p><p>FYI</p><p>a new rear u-joint is cheap. (to buy)</p><p>if you use a pry bar on any Ujoint (large screw driver) and lever the joint .</p><p>see no play?</p><p>yes the CROSS star can move outward. in and out of cups sure.(see rust draining from cups or its seals gone or a wreck)</p><p>it can rotate (pivot) as it does and is job 1.</p><p></p><p>but no illegal play seen that smacks of needle bearing DEATH in the cups big time.</p><p>make sure the front axle is not stuck on 4wd, front right axle lock frozen in 4wd.</p><p>if is the whole car bucks on pavement. (due to PART time 4wd realities)</p><p>that is all I can think of in short time.</p><p>on mine, 2"lift left springs x4 ,the rear came with wedge perch on top of rear springs (pair) that raises axle pig, it's angle upward so</p><p>the transmission pan/cross plate, drops it 1 more inch, and the total ANGLE is very little at all.</p><p>I cant see yours so can only wonder.</p></blockquote><p></p>
[QUOTE="deadpool1, post: 440878, member: 21229"] great news, the 1s test free of cost, proves what is NOT. the boot is bad. the most cheap fix on earth, why not get a new one, mine is super soft thin rubber. not 30 year old hard old rubber. the causes are in order of PAIN (labor ) and part cost are: I presume the tranny is not bouncing up and down too. right in motion? great no body to frame jackups, so we can end that panic. (just springs) The rear ujoint will not like 4 + inches of lift, that makes it vibrate like mad, (U-joint 101 rules study it) and a very short life span listed at Makers web site for SPICER. the rear prop shaft is super short. 1: a new boot. 2: 2nd cause ( shift lever and be actually too sensitive, (as in bad shift rails detents, or OMG they are missing parts by PO silly actions ) 3: any manual transmission can jump out of gear to neutral if the box has (#2 above ) or bad bearings or forks melted to death even warped forks or the syncro ring is a total wreck most of this are from GL4 way way too low and looks like TAR drained, or using ATV in the 5sp box (never) 4: the tranny is bouncing like mad and or the rear pinon angles are way way wrong. to learn what it is we discount what we know it is not. (SPOCK or[B] Occam's razor[/B]) 2 classic answers, it's the simple one bad or , we tested all 10 possibles and 9 pass the test so must be #10 a fully bad transmission or missing detent balls) we can't see the tranny bounce here. some boots are no good even new, from 12,000 miles away made from recycled , flip-plops or worse. maybe crown parts and cross the fingers.? when bearings in the box fail the gears jump around 360deg left and right and it will jump out of gear. the shiftrails most do there job or it will jump out of gear. for sure with 5 lb custom shift lever ball put here, (I used Beer stine lever as dumb kit) the dent balls not missing or there springs broken or missing the gear yoke/forks, not bent or warped or galled or melted (the look funny colors they ) are are bad. syncro's not cracked or wrecked. gears have dogs , those too can wreck. we shift dogs not gears. see? and 4th gear is not a gear it is 1:1 ratio, main shaft lockup. so does it jump gear? and the bearings. ive rebuilt a few,with full rebuild kits and know what to look for inside, (and measure). Overheat damage and bearings shot are easy to spot. so do the rear mount first. if no handy new boots found. sure. and GOOD LUCK!!!, never seen a used car sold this old that did not have 10 more more super bad things wrong, missing or warn out. Or done wrong, many lift kits are done wrong. (springs just thrown on) FYI a new rear u-joint is cheap. (to buy) if you use a pry bar on any Ujoint (large screw driver) and lever the joint . see no play? yes the CROSS star can move outward. in and out of cups sure.(see rust draining from cups or its seals gone or a wreck) it can rotate (pivot) as it does and is job 1. but no illegal play seen that smacks of needle bearing DEATH in the cups big time. make sure the front axle is not stuck on 4wd, front right axle lock frozen in 4wd. if is the whole car bucks on pavement. (due to PART time 4wd realities) that is all I can think of in short time. on mine, 2"lift left springs x4 ,the rear came with wedge perch on top of rear springs (pair) that raises axle pig, it's angle upward so the transmission pan/cross plate, drops it 1 more inch, and the total ANGLE is very little at all. I cant see yours so can only wonder. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
AX-15 transmission popping out of gear
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